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### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE111_Unsafe_JNI; import testcasesupport.AbstractTestCaseBadOnly; import testcasesupport.IO; import java.io.; import java.util.logging.Level; public class CWE111_Unsafe_JNI__console_01 extends AbstractTestCaseBadOnly { native String test(String s1, int len); static { try { System.loadLibrary("JNITest"); } catch (UnsatisfiedLinkError errorUnsatisfiedLink) { IO.logger.log(Level.WARNING, "Error, the library does not exist", errorUnsatisfiedLink); } } public void bad() throws IOException { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; int intNumber = 0; try { IO.writeLine("Enter a string: (asdf)" ); readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); String stringLine = readerBuffered.readLine(); IO.writeLine("How long was your string? (200) "); intNumber = Integer.parseInt(readerBuffered.readLine()); IO.writeLine("Result from native method: " + test(stringLine, intNumber)); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); return; } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. / * @description * Java code makes a call into a potentially unsafe unmanaged DLL. * The bad case allows the user to specify the length of the input string. * In addition, the case does not recognize the limitations of the unmanaged * code and does no input validation. * * In order to get this to run, you need to place the JNITest.dll (Windows) * or libJNITest (Linux) in your Java library path. * * / package testcases.CWE111_Unsafe_JNI; import testcasesupport.AbstractTestCaseBadOnly; import testcasesupport.IO; import java.io.; import java.util.logging.Level; public class CWE111_Unsafe_JNI__console_01 extends AbstractTestCaseBadOnly { native String test(String s1, int len); static { try { System.loadLibrary("JNITest"); /* load JNITest.dll or libJNITest.so / } catch (UnsatisfiedLinkError errorUnsatisfiedLink) { IO.logger.log(Level.WARNING, "Error, the library does not exist", errorUnsatisfiedLink); } } public void bad() throws IOException { InputStreamReader readerInputStream = null; BufferedReader readerBuffered = null; int intNumber = 0; try { IO.writeLine("Enter a string: (asdf)" ); readerInputStream = new InputStreamReader(System.in, "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); String stringLine = readerBuffered.readLine(); IO.writeLine("How long was your string? (200) "); intNumber = Integer.parseInt(readerBuffered.readLine()); IO.writeLine("Result from native method: " + test(stringLine, intNumber)); / FLAW: Using an unsafe JNI method / } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); return; } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_01 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_01.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-01.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 01 Baseline * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_01 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_02 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (false) { data = null; } else { data = "foo"; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = "foo"; } else { data = null; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (false) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_02.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-02.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 02 Control flow: if(true) and if(false) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_02 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first true to false / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (false) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second true to false / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (false) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_03 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5!=5) { data = null; } else { data = "foo"; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = "foo"; } else { data = null; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (5!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_03.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-03.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 03 Control flow: if(5==5) and if(5!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_03 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first 5==5 to 5!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second 5==5 to 5!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_04 extends AbstractTestCaseServlet { private static final boolean PRIVATE_STATIC_FINAL_TRUE = true; private static final boolean PRIVATE_STATIC_FINAL_FALSE = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FALSE) { data = null; } else { data = "foo"; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = "foo"; } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FALSE) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_04.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-04.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 04 Control flow: if(PRIVATE_STATIC_FINAL_TRUE) and if(PRIVATE_STATIC_FINAL_FALSE) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_04 extends AbstractTestCaseServlet { / The two variables below are declared "final", so a tool should * be able to identify that reads of these will always return their * initialized values. / private static final boolean PRIVATE_STATIC_FINAL_TRUE = true; private static final boolean PRIVATE_STATIC_FINAL_FALSE = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first PRIVATE_STATIC_FINAL_TRUE to PRIVATE_STATIC_FINAL_FALSE / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second PRIVATE_STATIC_FINAL_TRUE to PRIVATE_STATIC_FINAL_FALSE / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_05 extends AbstractTestCaseServlet { private boolean privateTrue = true; private boolean privateFalse = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFalse) { data = null; } else { data = "foo"; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = "foo"; } else { data = null; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFalse) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_05.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-05.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 05 Control flow: if(privateTrue) and if(privateFalse) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_05 extends AbstractTestCaseServlet { / The two variables below are not defined as "final", but are never * assigned any other value, so a tool should be able to identify that * reads of these will always return their initialized values. / private boolean privateTrue = true; private boolean privateFalse = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first privateTrue to privateFalse / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second privateTrue to privateFalse / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_06 extends AbstractTestCaseServlet { private static final int PRIVATE_STATIC_FINAL_FIVE = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE!=5) { data = null; } else { data = "foo"; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = "foo"; } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_06.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-06.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 06 Control flow: if(PRIVATE_STATIC_FINAL_FIVE==5) and if(PRIVATE_STATIC_FINAL_FIVE!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_06 extends AbstractTestCaseServlet { / The variable below is declared "final", so a tool should be able * to identify that reads of this will always give its initialized * value. / private static final int PRIVATE_STATIC_FINAL_FIVE = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first PRIVATE_STATIC_FINAL_FIVE==5 to PRIVATE_STATIC_FINAL_FIVE!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second PRIVATE_STATIC_FINAL_FIVE==5 to PRIVATE_STATIC_FINAL_FIVE!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_07 extends AbstractTestCaseServlet { private int privateFive = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive!=5) { data = null; } else { data = "foo"; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = "foo"; } else { data = null; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFive!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_07.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-07.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 07 Control flow: if(privateFive==5) and if(privateFive!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_07 extends AbstractTestCaseServlet { / The variable below is not declared "final", but is never assigned * any other value so a tool should be able to identify that reads of * this will always give its initialized value. / private int privateFive = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first privateFive==5 to privateFive!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second privateFive==5 to privateFive!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_08 extends AbstractTestCaseServlet { private boolean privateReturnsTrue() { return true; } private boolean privateReturnsFalse() { return false; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsFalse()) { data = null; } else { data = "foo"; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = "foo"; } else { data = null; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateReturnsFalse()) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_08.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-08.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 08 Control flow: if(privateReturnsTrue()) and if(privateReturnsFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_08 extends AbstractTestCaseServlet { / The methods below always return the same value, so a tool * should be able to figure out that every call to these * methods will return true or return false. / private boolean privateReturnsTrue() { return true; } private boolean privateReturnsFalse() { return false; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first privateReturnsTrue() to privateReturnsFalse() / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second privateReturnsTrue() to privateReturnsFalse() / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_09 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FALSE) { data = null; } else { data = "foo"; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = "foo"; } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FALSE) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_09.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-09.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 09 Control flow: if(IO.STATIC_FINAL_TRUE) and if(IO.STATIC_FINAL_FALSE) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_09 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first IO.STATIC_FINAL_TRUE to IO.STATIC_FINAL_FALSE / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second IO.STATIC_FINAL_TRUE to IO.STATIC_FINAL_FALSE / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_10 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFalse) { data = null; } else { data = "foo"; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = "foo"; } else { data = null; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFalse) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_10.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-10.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 10 Control flow: if(IO.staticTrue) and if(IO.staticFalse) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_10 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticTrue to IO.staticFalse / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticTrue to IO.staticFalse / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_11 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if(IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsFalse()) { data = null; } else { data = "foo"; } if (IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = "foo"; } else { data = null; } if (IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticReturnsFalse()) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_11.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-11.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 11 Control flow: if(IO.staticReturnsTrue()) and if(IO.staticReturnsFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_11 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if(IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticReturnsTrue() to IO.staticReturnsFalse() / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticReturnsTrue() to IO.staticReturnsFalse() / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsTrue()) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_12 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = "foo"; } else { data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } else { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_12.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-12.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 12 Control flow: if(IO.staticReturnsTrueOrFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_12 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / FIX: Use a hardcoded string / data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodG2B() - use goodsource and badsink by changing the first "if" so that * both branches use the GoodSource / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { / FIX: Use a hardcoded string / data = "foo"; } else { / FIX: Use a hardcoded string / data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } else { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G() - use badsource and goodsink by changing the second "if" so that * both branches use the GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_13 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE!=5) { data = null; } else { data = "foo"; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = "foo"; } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_13.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-13.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 13 Control flow: if(IO.STATIC_FINAL_FIVE==5) and if(IO.STATIC_FINAL_FIVE!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_13 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first IO.STATIC_FINAL_FIVE==5 to IO.STATIC_FINAL_FIVE!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second IO.STATIC_FINAL_FIVE==5 to IO.STATIC_FINAL_FIVE!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_14 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive!=5) { data = null; } else { data = "foo"; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = "foo"; } else { data = null; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFive!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_14.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-14.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 14 Control flow: if(IO.staticFive==5) and if(IO.staticFive!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_14 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticFive==5 to IO.staticFive!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticFive==5 to IO.staticFive!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_15 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: data = null; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (5) { case 6: data = null; break; default: data = "foo"; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = "foo"; break; default: data = null; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: data = null; break; } switch (8) { case 7: IO.writeLine("Benign, fixed string"); break; default: if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } break; } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: data = null; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } break; default: IO.writeLine("Benign, fixed string"); break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_15.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-15.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 15 Control flow: switch(6) and switch(7) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_15 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodG2B1() - use goodsource and badsink by changing the first switch to switch(5) / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (5) { case 6: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; default: / FIX: Use a hardcoded string / data = "foo"; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodG2B2() - use goodsource and badsink by reversing the blocks in the first switch / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: / FIX: Use a hardcoded string / data = "foo"; break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodB2G1() - use badsource and goodsink by changing the second switch to switch(8) / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (8) { case 7: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; default: if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } break; } } / goodB2G2() - use badsource and goodsink by reversing the blocks in the second switch / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_16 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } break; } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = "foo"; break; } while (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } break; } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_16.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-16.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 16 Control flow: while(true) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_16 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } break; } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { / FIX: Use a hardcoded string / data = "foo"; break; } while (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } break; } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int k = 0; k < 1; k++) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_17.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-17.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 17 Control flow: for loops * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / We need to have one source outside of a for loop in order * to prevent the Java compiler from generating an error because * data is uninitialized / data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; for (int j = 0; j < 1; j++) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G() - use badsource and goodsink/ private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int k = 0; k < 1; k++) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_21 extends AbstractTestCaseServlet { private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_21.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-21.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 21 Control flow: Flow controlled by value of a private variable. All functions contained in one file. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_21 extends AbstractTestCaseServlet { / The variable below is used to drive control flow in the sink function / private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / The variables below are used to drive control flow in the sink functions. / private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use BadSource and GoodSink by setting the variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use BadSource and GoodSink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a extends AbstractTestCaseServlet { public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).badSink(data , request, response); } public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).goodB2G1Sink(data , request, response); } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).goodB2G2Sink(data , request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).goodG2BSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a extends AbstractTestCaseServlet { / The public static variable below is used to drive control flow in the sink function. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).badSink(data , request, response); } / The public static variables below are used to drive control flow in the sink functions. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).goodB2G1Sink(data , request, response); } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).goodB2G2Sink(data , request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; / FIX: Use a hardcoded string / data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b()).goodG2BSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.badPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } else { data = null; } } public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.goodB2G1PublicStatic) { data = null; } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.goodB2G2PublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } else { data = null; } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.goodG2BPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } else { data = null; } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.badPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.goodB2G1PublicStatic) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.goodB2G2PublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_22a.goodG2BPublicStatic) { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors */ data = null; } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = "foo"; dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_31.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-31.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 31 Data flow: make a copy of data within the same method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; / FIX: Use a hardcoded string / data = "foo"; dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_41.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-41.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 41 Data flow: data passed as an argument from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_42.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-42.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 42 Data flow: data returned from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataGoodB2G = data; goodB2GSink(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_45.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-45.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 45 Data flow: data passed as a private class member variable from one function to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataGoodB2G = data; goodB2GSink(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b()).goodG2BSink(data , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b()).goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b()).goodG2BSink(data , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b()).goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54e.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b()).badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b()).goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b()).goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-61a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b()).badSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b()).goodG2BSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b()).goodB2GSource(request, response); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b { public String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } public String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; return data; } public String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-61b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 61 Data flow: data returned from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_61b { public String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } / goodG2B() - use goodsource and badsink / public String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; return data; } / goodB2G() - use badsource and goodsink / public String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects */ try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b()).badSink(dataArray , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b()).goodG2BSink(dataArray , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b()).goodB2GSink(dataArray , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-66a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 66 Data flow: data passed in an array from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b()).badSink(dataArray , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b()).goodG2BSink(dataArray , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } String[] dataArray = new String[5]; dataArray[2] = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b()).goodB2GSink(dataArray , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b { public void badSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-66b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 66 Data flow: data passed in an array from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_66b { public void badSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String dataArray[] , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataArray[2]; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a extends AbstractTestCaseServlet { static class Container { public String containerOne; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b()).badSink(dataContainer , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b()).goodG2BSink(dataContainer , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b()).goodB2GSink(dataContainer , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-67a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 67 Data flow: data passed in a class from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a extends AbstractTestCaseServlet { static class Container { public String containerOne; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b()).badSink(dataContainer , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b()).goodG2BSink(dataContainer , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Container dataContainer = new Container(); dataContainer.containerOne = data; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b()).goodB2GSink(dataContainer , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b { public void badSink(CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-67b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 67 Data flow: data passed in a class from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67b { public void badSink(CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_67a.Container dataContainer , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataContainer.containerOne; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a extends AbstractTestCaseServlet { public static String data; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b()).badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b()).goodG2BSink(request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b()).goodB2GSink(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-68a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 68 Data flow: data passed as a member variable in the "a" class, which is used by a method in another class in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a extends AbstractTestCaseServlet { public static String data; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b()).badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b()).goodG2BSink(request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b()).goodB2GSink(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b { public void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-68b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 68 Data flow: data passed as a member variable in the "a" class, which is used by a method in another class in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68b { public void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_68a.data; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b()).badSink((Object)data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b()).goodG2BSink((Object)data , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b()).goodB2GSink((Object)data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-71a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 71 Data flow: data passed as an Object reference argument from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b()).badSink((Object)data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b()).goodG2BSink((Object)data , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b()).goodB2GSink((Object)data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b { public void badSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-71b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 71 Data flow: data passed as an Object reference argument from one method to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_71b { public void badSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(Object dataObject , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = (String)dataObject; if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b()).badSink(dataVector , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b()).goodG2BSink(dataVector , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b()).goodB2GSink(dataVector , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-72a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 72 Data flow: data passed in a Vector from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b()).badSink(dataVector , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b()).goodG2BSink(dataVector , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } Vector<String> dataVector = new Vector<String>(5); dataVector.add(0, data); dataVector.add(1, data); dataVector.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b()).goodB2GSink(dataVector , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b { public void badSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-72b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 72 Data flow: data passed in a Vector from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.Vector; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_72b { public void badSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(Vector<String> dataVector , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataVector.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b()).badSink(dataLinkedList , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b()).goodG2BSink(dataLinkedList , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b()).goodB2GSink(dataLinkedList , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-73a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 73 Data flow: data passed in a LinkedList from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b()).badSink(dataLinkedList , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b()).goodG2BSink(dataLinkedList , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } LinkedList<String> dataLinkedList = new LinkedList<String>(); dataLinkedList.add(0, data); dataLinkedList.add(1, data); dataLinkedList.add(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b()).goodB2GSink(dataLinkedList , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b { public void badSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-73b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 73 Data flow: data passed in a LinkedList from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.LinkedList; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_73b { public void badSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(LinkedList<String> dataLinkedList , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataLinkedList.remove(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b()).badSink(dataHashMap , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b()).goodG2BSink(dataHashMap , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b()).goodB2GSink(dataHashMap , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-74a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 74 Data flow: data passed in a HashMap from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b()).badSink(dataHashMap , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b()).goodG2BSink(dataHashMap , request, response ); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } HashMap<Integer,String> dataHashMap = new HashMap<Integer,String>(); dataHashMap.put(0, data); dataHashMap.put(1, data); dataHashMap.put(2, data); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b()).goodB2GSink(dataHashMap , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b { public void badSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodG2BSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } public void goodB2GSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-74b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 74 Data flow: data passed in a HashMap from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.util.HashMap; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_74b { public void badSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(HashMap<Integer,String> dataHashMap , HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataHashMap.get(2); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayOutputStream; import java.io.ObjectOutput; import java.io.ObjectOutputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.Socket; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b()).badSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b()).goodG2BSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b()).goodB2GSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-75a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 75 Data flow: data passed in a serialized object from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayOutputStream; import java.io.ObjectOutput; import java.io.ObjectOutputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.Socket; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b()).badSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b()).goodG2BSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } / serialize data to a byte array / ByteArrayOutputStream streamByteArrayOutput = null; ObjectOutput outputObject = null; try { streamByteArrayOutput = new ByteArrayOutputStream() ; outputObject = new ObjectOutputStream(streamByteArrayOutput) ; outputObject.writeObject(data); byte[] dataSerialized = streamByteArrayOutput.toByteArray(); (new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b()).goodB2GSink(dataSerialized , request, response ); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in serialization", exceptIO); } finally { / clean up stream writing objects / try { if (outputObject != null) { outputObject.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectOutputStream", exceptIO); } try { if (streamByteArrayOutput != null) { streamByteArrayOutput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayOutputStream", exceptIO); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayInputStream; import java.io.ObjectInputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b { public void badSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } public void goodG2BSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } public void goodB2GSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-75b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 75 Data flow: data passed in a serialized object from one method to another in different source files in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import java.io.ByteArrayInputStream; import java.io.ObjectInputStream; import java.io.IOException; import java.util.logging.Level; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_75b { public void badSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { / unserialize data / ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { / clean up stream reading objects / try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } / goodG2B() - use GoodSource and BadSink / public void goodG2BSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { / unserialize data / ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie / response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { / clean up stream reading objects / try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } / goodB2G() - use BadSource and GoodSink / public void goodB2GSink(byte[] dataSerialized , HttpServletRequest request, HttpServletResponse response) throws Throwable { / unserialize data / ByteArrayInputStream streamByteArrayInput = null; ObjectInputStream streamObjectInput = null; try { streamByteArrayInput = new ByteArrayInputStream(dataSerialized); streamObjectInput = new ObjectInputStream(streamByteArrayInput); String data = (String)streamObjectInput.readObject(); if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / response.addCookie(cookieSink); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "IOException in deserialization", exceptIO); } catch (ClassNotFoundException exceptClassNotFound) { IO.logger.log(Level.WARNING, "ClassNotFoundException in deserialization", exceptClassNotFound); } finally { / clean up stream reading objects */ try { if (streamObjectInput != null) { streamObjectInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ObjectInputStream", exceptIO); } try { if (streamByteArrayInput != null) { streamByteArrayInput.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing ByteArrayInputStream", exceptIO); } } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_bad(); baseObject.action(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodG2B(); baseObject.action(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodB2G(); baseObject.action(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_bad(); baseObject.action(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodG2B(); baseObject.action(data , request, response); } / goodB2G() - use BadSource and GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base baseObject = new CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodB2G(); baseObject.action(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_bad extends CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_bad.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_bad.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_bad extends CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public abstract class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public abstract void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable; } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_base.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.*; public abstract class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public abstract void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable; }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodB2G extends CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodB2G.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_goodB2G.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodB2G extends CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", URLEncoder.encode(data, "UTF-8")); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodG2B extends CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); response.addCookie(cookieSink); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodG2B.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-81_goodG2B.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addCookieServlet * GoodSink: URLEncode input * BadSink : querystring to addCookie() * Flow Variant: 81 Data flow: data passed in a parameter to an abstract method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_goodG2B extends CWE113_HTTP_Response_Splitting__connect_tcp_addCookieServlet_81_base { public void action(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { Cookie cookieSink = new Cookie("lang", data); / POTENTIAL FLAW: Input not verified before inclusion in the cookie */ response.addCookie(cookieSink); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_01 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_01.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-01.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 01 Baseline * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_01 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_02 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (false) { data = null; } else { data = "foo"; } if (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = "foo"; } else { data = null; } if (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (false) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (true) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_02.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-02.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 02 Control flow: if(true) and if(false) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_02 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first true to false / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (false) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second true to false / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (false) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (true) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_03 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (5==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5!=5) { data = null; } else { data = "foo"; } if (5==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = "foo"; } else { data = null; } if (5==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (5!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (5==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_03.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-03.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 03 Control flow: if(5==5) and if(5!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_03 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first 5==5 to 5!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (5==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second 5==5 to 5!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (5==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (5==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_04 extends AbstractTestCaseServlet { private static final boolean PRIVATE_STATIC_FINAL_TRUE = true; private static final boolean PRIVATE_STATIC_FINAL_FALSE = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FALSE) { data = null; } else { data = "foo"; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = "foo"; } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FALSE) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_04.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-04.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 04 Control flow: if(PRIVATE_STATIC_FINAL_TRUE) and if(PRIVATE_STATIC_FINAL_FALSE) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_04 extends AbstractTestCaseServlet { / The two variables below are declared "final", so a tool should * be able to identify that reads of these will always return their * initialized values. / private static final boolean PRIVATE_STATIC_FINAL_TRUE = true; private static final boolean PRIVATE_STATIC_FINAL_FALSE = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first PRIVATE_STATIC_FINAL_TRUE to PRIVATE_STATIC_FINAL_FALSE / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (PRIVATE_STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second PRIVATE_STATIC_FINAL_TRUE to PRIVATE_STATIC_FINAL_FALSE / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_TRUE) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_05 extends AbstractTestCaseServlet { private boolean privateTrue = true; private boolean privateFalse = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFalse) { data = null; } else { data = "foo"; } if (privateTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = "foo"; } else { data = null; } if (privateTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFalse) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateTrue) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_05.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-05.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 05 Control flow: if(privateTrue) and if(privateFalse) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_05 extends AbstractTestCaseServlet { / The two variables below are not defined as "final", but are never * assigned any other value, so a tool should be able to identify that * reads of these will always return their initialized values. / private boolean privateTrue = true; private boolean privateFalse = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first privateTrue to privateFalse / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second privateTrue to privateFalse / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateTrue) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_06 extends AbstractTestCaseServlet { private static final int PRIVATE_STATIC_FINAL_FIVE = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE!=5) { data = null; } else { data = "foo"; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = "foo"; } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_06.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-06.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 06 Control flow: if(PRIVATE_STATIC_FINAL_FIVE==5) and if(PRIVATE_STATIC_FINAL_FIVE!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_06 extends AbstractTestCaseServlet { / The variable below is declared "final", so a tool should be able * to identify that reads of this will always give its initialized * value. / private static final int PRIVATE_STATIC_FINAL_FIVE = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first PRIVATE_STATIC_FINAL_FIVE==5 to PRIVATE_STATIC_FINAL_FIVE!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second PRIVATE_STATIC_FINAL_FIVE==5 to PRIVATE_STATIC_FINAL_FIVE!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (PRIVATE_STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (PRIVATE_STATIC_FINAL_FIVE==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_07 extends AbstractTestCaseServlet { private int privateFive = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive!=5) { data = null; } else { data = "foo"; } if (privateFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = "foo"; } else { data = null; } if (privateFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFive!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateFive==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_07.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-07.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 07 Control flow: if(privateFive==5) and if(privateFive!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_07 extends AbstractTestCaseServlet { / The variable below is not declared "final", but is never assigned * any other value so a tool should be able to identify that reads of * this will always give its initialized value. / private int privateFive = 5; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first privateFive==5 to privateFive!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second privateFive==5 to privateFive!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateFive==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_08 extends AbstractTestCaseServlet { private boolean privateReturnsTrue() { return true; } private boolean privateReturnsFalse() { return false; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsFalse()) { data = null; } else { data = "foo"; } if (privateReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = "foo"; } else { data = null; } if (privateReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateReturnsFalse()) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (privateReturnsTrue()) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_08.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-08.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 08 Control flow: if(privateReturnsTrue()) and if(privateReturnsFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_08 extends AbstractTestCaseServlet { / The methods below always return the same value, so a tool * should be able to figure out that every call to these * methods will return true or return false. / private boolean privateReturnsTrue() { return true; } private boolean privateReturnsFalse() { return false; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first privateReturnsTrue() to privateReturnsFalse() / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (privateReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second privateReturnsTrue() to privateReturnsFalse() / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (privateReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (privateReturnsTrue()) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_09 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FALSE) { data = null; } else { data = "foo"; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = "foo"; } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FALSE) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_TRUE) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_09.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-09.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 09 Control flow: if(IO.STATIC_FINAL_TRUE) and if(IO.STATIC_FINAL_FALSE) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_09 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.STATIC_FINAL_TRUE to IO.STATIC_FINAL_FALSE / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.STATIC_FINAL_TRUE to IO.STATIC_FINAL_FALSE / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FALSE) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_TRUE) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_TRUE) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_10 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFalse) { data = null; } else { data = "foo"; } if (IO.staticTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = "foo"; } else { data = null; } if (IO.staticTrue) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFalse) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticTrue) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_10.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-10.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 10 Control flow: if(IO.staticTrue) and if(IO.staticFalse) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_10 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticTrue to IO.staticFalse / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticTrue to IO.staticFalse / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFalse) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticTrue) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticTrue) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_11 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if(IO.staticReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsFalse()) { data = null; } else { data = "foo"; } if (IO.staticReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = "foo"; } else { data = null; } if (IO.staticReturnsTrue()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticReturnsFalse()) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticReturnsTrue()) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_11.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-11.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 11 Control flow: if(IO.staticReturnsTrue()) and if(IO.staticReturnsFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_11 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if(IO.staticReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticReturnsTrue() to IO.staticReturnsFalse() / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsTrue()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticReturnsTrue() to IO.staticReturnsFalse() / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsFalse()) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticReturnsTrue()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticReturnsTrue()) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_12 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = "foo"; } else { data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } if(IO.staticReturnsTrueOrFalse()) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_12.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-12.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 12 Control flow: if(IO.staticReturnsTrueOrFalse()) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_12 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / FIX: Use a hardcoded string / data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B() - use goodsource and badsink by changing the first "if" so that * both branches use the GoodSource / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { / FIX: Use a hardcoded string / data = "foo"; } else { / FIX: Use a hardcoded string / data = "foo"; } if(IO.staticReturnsTrueOrFalse()) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G() - use badsource and goodsink by changing the second "if" so that * both branches use the GoodSink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if(IO.staticReturnsTrueOrFalse()) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } if(IO.staticReturnsTrueOrFalse()) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_13 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE!=5) { data = null; } else { data = "foo"; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = "foo"; } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.STATIC_FINAL_FIVE==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_13.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-13.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 13 Control flow: if(IO.STATIC_FINAL_FIVE==5) and if(IO.STATIC_FINAL_FIVE!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_13 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.STATIC_FINAL_FIVE==5 to IO.STATIC_FINAL_FIVE!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.STATIC_FINAL_FIVE==5 to IO.STATIC_FINAL_FIVE!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.STATIC_FINAL_FIVE==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.STATIC_FINAL_FIVE==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_14 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive!=5) { data = null; } else { data = "foo"; } if (IO.staticFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = "foo"; } else { data = null; } if (IO.staticFive==5) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFive!=5) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { data = null; } if (IO.staticFive==5) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_14.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-14.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 14 Control flow: if(IO.staticFive==5) and if(IO.staticFive!=5) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_14 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B1() - use goodsource and badsink by changing first IO.staticFive==5 to IO.staticFive!=5 / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: Use a hardcoded string / data = "foo"; } if (IO.staticFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B2() - use goodsource and badsink by reversing statements in first if / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { / FIX: Use a hardcoded string / data = "foo"; } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G1() - use badsource and goodsink by changing second IO.staticFive==5 to IO.staticFive!=5 / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive!=5) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing statements in second if / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; if (IO.staticFive==5) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } if (IO.staticFive==5) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_15 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: data = null; break; } switch (7) { case 7: if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (5) { case 6: data = null; break; default: data = "foo"; break; } switch (7) { case 7: if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = "foo"; break; default: data = null; break; } switch (7) { case 7: if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: data = null; break; } switch (8) { case 7: IO.writeLine("Benign, fixed string"); break; default: if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: data = null; break; } switch (7) { case 7: if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: IO.writeLine("Benign, fixed string"); break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_15.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-15.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 15 Control flow: switch(6) and switch(7) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_15 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodG2B1() - use goodsource and badsink by changing the first switch to switch(5) / private void goodG2B1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (5) { case 6: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; default: / FIX: Use a hardcoded string / data = "foo"; break; } switch (7) { case 7: / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodG2B2() - use goodsource and badsink by reversing the blocks in the first switch / private void goodG2B2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: / FIX: Use a hardcoded string / data = "foo"; break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } / goodB2G1() - use badsource and goodsink by changing the second switch to switch(8) / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (8) { case 7: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; default: / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } / goodB2G2() - use badsource and goodsink by reversing the blocks in the second switch / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; switch (6) { case 6: data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; break; } switch (7) { case 7: / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; default: / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B1(request, response); goodG2B2(request, response); goodB2G1(request, response); goodB2G2(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_16 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = "foo"; break; } while (true) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_16.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-16.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 16 Control flow: while(true) * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_16 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { / FIX: Use a hardcoded string / data = "foo"; break; } while (true) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; while (true) { data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } break; } while (true) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } break; } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int j = 0; j < 1; j++) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; for (int j = 0; j < 1; j++) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int k = 0; k < 1; k++) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_17.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-17.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 17 Control flow: for loops * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_17 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / We need to have one source outside of a for loop in order * to prevent the Java compiler from generating an error because * data is uninitialized / data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int j = 0; j < 1; j++) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; for (int j = 0; j < 1; j++) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G() - use badsource and goodsink/ private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } for (int k = 0; k < 1; k++) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_21 extends AbstractTestCaseServlet { private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { IO.writeLine("Benign, fixed string"); } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_21.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-21.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 21 Control flow: Flow controlled by value of a private variable. All functions contained in one file. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_21 extends AbstractTestCaseServlet { / The variable below is used to drive control flow in the sink function / private boolean badPrivate = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPrivate = true; badSink(data , request, response); } private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (badPrivate) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / The variables below are used to drive control flow in the sink functions. / private boolean goodB2G1Private = false; private boolean goodB2G2Private = false; private boolean goodG2BPrivate = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use BadSource and GoodSink by setting the variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1Private = false; goodB2G1Sink(data , request, response); } private void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G1Private) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run / IO.writeLine("Benign, fixed string"); } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use BadSource and GoodSink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2Private = true; goodB2G2Sink(data , request, response); } private void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodB2G2Private) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodG2B() - use GoodSource and BadSink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BPrivate = true; goodG2BSink(data , request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (goodG2BPrivate) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a extends AbstractTestCaseServlet { public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).badSink(data , request, response); } public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).goodB2G1Sink(data , request, response); } private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).goodB2G2Sink(data , request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).goodG2BSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a extends AbstractTestCaseServlet { / The public static variable below is used to drive control flow in the sink function. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean badPublicStatic = false; public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).badSink(data , request, response); } / The public static variables below are used to drive control flow in the sink functions. * The public static variable mimics a global variable in the C/C++ language family. / public static boolean goodB2G1PublicStatic = false; public static boolean goodB2G2PublicStatic = false; public static boolean goodG2BPublicStatic = false; public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodB2G1(request, response); goodB2G2(request, response); goodG2B(request, response); } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / private void goodB2G1(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G1PublicStatic = false; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).goodB2G1Sink(data , request, response); } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / private void goodB2G2(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2G2PublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).goodB2G2Sink(data , request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = null; / FIX: Use a hardcoded string / data = "foo"; goodG2BPublicStatic = true; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b()).goodG2BSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.badPublicStatic) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { data = null; } } public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.goodB2G1PublicStatic) { data = null; } else { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.goodB2G2PublicStatic) { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { data = null; } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.goodG2BPublicStatic) { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { data = null; } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-22b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 22 Control flow: Flow controlled by value of a public static variable. Sink functions are in a separate file from sources. * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.badPublicStatic) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodB2G1() - use badsource and goodsink by setting the static variable to false instead of true / public void goodB2G1Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.goodB2G1PublicStatic) { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } else { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G2() - use badsource and goodsink by reversing the blocks in the if in the sink function / public void goodB2G2Sink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.goodB2G2PublicStatic) { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors / data = null; } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_22a.goodG2BPublicStatic) { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } else { / INCIDENTAL: CWE 561 Dead Code, the code below will never run * but ensure data is inititialized before the Sink to avoid compiler errors */ data = null; } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = "foo"; dataCopy = data; } { String data = dataCopy; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_31.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-31.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 31 Data flow: make a copy of data within the same method * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_31 extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; / FIX: Use a hardcoded string / data = "foo"; dataCopy = data; } { String data = dataCopy; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String dataCopy; { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataCopy = data; } { String data = dataCopy; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_41.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-41.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 41 Data flow: data passed as an argument from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_41 extends AbstractTestCaseServlet { private void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; goodG2BSink(data , request, response ); } private void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_42.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-42.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 42 Data flow: data returned from one method to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_42 extends AbstractTestCaseServlet { private String badSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = badSource(request, response); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / private String goodG2BSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; return data; } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodG2BSource(request, response); / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private String goodB2GSource(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } return data; } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = goodB2GSource(request, response); / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataGoodB2G = data; goodB2GSink(request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_45.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-45.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 45 Data flow: data passed as a private class member variable from one function to another in the same class * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_45 extends AbstractTestCaseServlet { private String dataBad; private String dataGoodG2B; private String dataGoodB2G; private void badSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataBad; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataBad = data; badSink(request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2BSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodG2B; / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; dataGoodG2B = data; goodG2BSink(request, response); } private void goodB2GSink(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data = dataGoodB2G; / FIX: use URLEncoder.encode to hex-encode non-alphanumerics / if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } dataGoodB2G = data; goodB2GSink(request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b()).goodG2BSink(data , request, response ); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b()).goodB2GSink(data , request, response ); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b()).badSink(data , request, response ); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b()).goodG2BSink(data , request, response ); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b()).goodB2GSink(data , request, response ); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-51b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 51 Data flow: data passed as an argument from one function to another in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_51b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-52c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 52 Data flow: data passed as an argument from one method to another to another in three different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_52c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-53d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 53 Data flow: data passed as an argument from one method through two others to a fourth; all four functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_53d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b()).goodG2BSink(data , request, response); } private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { socket = new Socket("host.example.org", 39544); readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b()).goodB2GSink(data , request, response); } public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54a.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54a.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.io.BufferedReader; import java.io.InputStreamReader; import java.io.IOException; import java.net.Socket; import java.util.logging.Level; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54a extends AbstractTestCaseServlet { public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b()).badSink(data , request, response); } public void good(HttpServletRequest request, HttpServletResponse response) throws Throwable { goodG2B(request, response); goodB2G(request, response); } / goodG2B() - use goodsource and badsink / private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; / FIX: Use a hardcoded string / data = "foo"; (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink / private void goodB2G(HttpServletRequest request, HttpServletResponse response) throws Throwable { String data; data = ""; / Initialize data / / Read data using an outbound tcp connection / { Socket socket = null; BufferedReader readerBuffered = null; InputStreamReader readerInputStream = null; try { / Read data using an outbound tcp connection / socket = new Socket("host.example.org", 39544); / read input from socket / readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8"); readerBuffered = new BufferedReader(readerInputStream); / POTENTIAL FLAW: Read data using an outbound tcp connection / data = readerBuffered.readLine(); } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO); } finally { / clean up stream reading objects / try { if (readerBuffered != null) { readerBuffered.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO); } try { if (readerInputStream != null) { readerInputStream.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO); } / clean up socket objects / try { if (socket != null) { socket.close(); } } catch (IOException exceptIO) { IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO); } } } (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b()).goodB2GSink(data , request, response); } / Below is the main(). It is only used when building this testcase on * its own for testing or for building a binary to use in testing binary * analysis tools. It is not used when compiling all the testcases as one * application, which is how source code analysis tools are tested. */ public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException { mainFromParent(args); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54b.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54b { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54c.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54c { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e()).badSink(data , request, response); } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e()).goodG2BSink(data , request, response); } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e()).goodB2GSink(data , request, response); } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54d.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54d { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e()).badSink(data , request, response); } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e()).goodG2BSink(data , request, response); } / goodB2G() - use badsource and goodsink */ public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { (new CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e()).goodB2GSink(data , request, response); } }
### Human: Please review the following code and annotate comments on possible vulnerabilities or potential threats that may exist. package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } } ### Assistant: Here are the results of the code review. /* TEMPLATE GENERATED TESTCASE FILE Filename: CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e.java Label Definition File: CWE113_HTTP_Response_Splitting.label.xml Template File: sources-sinks-54e.tmpl.java / / * @description * CWE: 113 HTTP Response Splitting * BadSource: connect_tcp Read data using an outbound tcp connection * GoodSource: A hardcoded string * Sinks: addHeaderServlet * GoodSink: URLEncode input * BadSink : querystring to addHeader() * Flow Variant: 54 Data flow: data passed as an argument from one method through three others to a fifth; all five functions are in different classes in the same package * * / package testcases.CWE113_HTTP_Response_Splitting.s01; import testcasesupport.; import javax.servlet.http.; import java.net.URLEncoder; public class CWE113_HTTP_Response_Splitting__connect_tcp_addHeaderServlet_54e { public void badSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodG2B() - use goodsource and badsink / public void goodG2BSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / POTENTIAL FLAW: Input from file not verified / if (data != null) { response.addHeader("Location", "/author.jsp?lang=" + data); } } / goodB2G() - use badsource and goodsink / public void goodB2GSink(String data , HttpServletRequest request, HttpServletResponse response) throws Throwable { / FIX: use URLEncoder.encode to hex-encode non-alphanumerics */ if (data != null) { data = URLEncoder.encode(data, "UTF-8"); response.addHeader("Location", "/author.jsp?lang=" + data); } } }