stasvinokur/cve-and-cwe-dataset-1999-2025 huggingface dataset:
CVE-2016-6262 (severity: HIGH, weakness: CWE-125)
idn in libidn before 1.33 might allow remote attackers to obtain sensitive memory information by reading a zero byte as input, which triggers an out-of-bounds read, a different vulnerability than CVE-2015-8948.
CVE-2016-6263 (severity: HIGH, weakness: CWE-125)
The stringprep_utf8_nfkc_normalize function in lib/nfkc.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted UTF-8 data.
CVE-2016-6264 (severity: HIGH, weakness: NVD-CWE-Other)
Integer signedness error in libc/string/arm/memset.S in uClibc and uClibc-ng before 1.0.16 allows context-dependent attackers to cause a denial of service (crash) via a negative length value to the memset function.
CVE-2016-6265 (severity: MEDIUM, weakness: CWE-416)
Use-after-free vulnerability in the pdf_load_xref function in pdf/pdf-xref.c in MuPDF allows remote attackers to cause a denial of service (crash) via a crafted PDF file.
CVE-2016-6266 (severity: HIGH, weakness: CWE-20)
ccca_ajaxhandler.php in Trend Micro Smart Protection Server 2.5 before build 2200, 2.6 before build 2106, and 3.0 before build 1330 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the (1) host or (2) apikey parameter in a register action, (3) enable parameter in a save_stting action, or (4) host or (5) apikey parameter in a test_connection action.
CVE-2016-6267 (severity: HIGH, weakness: CWE-20)
SnmpUtils in Trend Micro Smart Protection Server 2.5 before build 2200, 2.6 before build 2106, and 3.0 before build 1330 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the (1) spare_Community, (2) spare_AllowGroupIP, or (3) spare_AllowGroupNetmask parameter to admin_notification.php.
CVE-2016-6268 (severity: HIGH, weakness: CWE-264)
Trend Micro Smart Protection Server 2.5 before build 2200, 2.6 before build 2106, and 3.0 before build 1330 allows local webserv users to execute arbitrary code with root privileges via a Trojan horse .war file in the Solr webapps directory.
CVE-2016-6269 (severity: CRITICAL, weakness: CWE-22)
Multiple directory traversal vulnerabilities in Trend Micro Smart Protection Server 2.5 before build 2200, 2.6 before build 2106, and 3.0 before build 1330 allow remote attackers to read and delete arbitrary files via the tmpfname parameter to (1) log_mgt_adhocquery_ajaxhandler.php, (2) log_mgt_ajaxhandler.php, (3) log_mgt_ajaxhandler.php or (4) tf parameter to wcs_bwlists_handler.php.
CVE-2016-6270 (severity: HIGH, weakness: CWE-77)
The handle_certificate function in /vmi/manager/engine/management/commands/apns_worker.py in Trend Micro Virtual Mobile Infrastructure before 5.1 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the password to api/v1/cfg/oauth/save_identify_pfx/.
CVE-2016-6271 (severity: HIGH, weakness: CWE-254)
The Bzrtp library (aka libbzrtp) 1.0.x before 1.0.4 allows man-in-the-middle attackers to conduct spoofing attacks by leveraging a missing HVI check on DHPart2 packet reception.
CVE-2016-6272 (severity: HIGH, weakness: CWE-91)
XPath injection vulnerability in Epic MyChart allows remote attackers to access contents of an XML document containing static display strings, such as field labels, via the topic parameter to help.asp. NOTE: this was originally reported as a SQL injection vulnerability, but this may be inaccurate.
CVE-2016-6273 (severity: HIGH, weakness: NVD-CWE-Other)
The lmadmin component in Flexera FlexNet Publisher (aka Flex License Manager) before 2015 SP5 and 2016 before R1 SP1, as used by Citrix License Server for Windows before 11.14.0.1 and Citrix License Server VPX before 11.14.0.1, allows remote attackers to cause a denial of service (crash) via a type 2F packet with a '01 19' opcode.
CVE-2016-6276 (severity: HIGH, weakness: CWE-264)
Citrix Linux Virtual Delivery Agent (aka VDA, formerly Linux Virtual Desktop) before 1.4.0 allows local users to gain root privileges via unspecified vectors.
CVE-2016-6277 (severity: HIGH, weakness: CWE-352)
NETGEAR R6250 before 1.0.4.6.Beta, R6400 before 1.0.1.18.Beta, R6700 before 1.0.1.14.Beta, R6900, R7000 before 1.0.7.6.Beta, R7100LG before 1.0.0.28.Beta, R7300DST before 1.0.0.46.Beta, R7900 before 1.0.1.8.Beta, R8000 before 1.0.3.26.Beta, D6220, D6400, D7000, and possibly other routers allow remote attackers to execute arbitrary commands via shell metacharacters in the path info to cgi-bin/.
CVE-2016-6283 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in Atlassian Confluence before 5.10.6 allows remote attackers to inject arbitrary web script or HTML via the newFileName parameter to pages/doeditattachment.action.
CVE-2016-6285 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in includes/decorators/global-translations.jsp in Atlassian JIRA before 7.2.2 allows remote attackers to inject arbitrary web script or HTML via the HTTP Host header.
CVE-2016-6286 (severity: HIGH, weakness: CWE-19)
The "spiffy-cgi-handlers" egg would convert a nonexistent "Proxy" header to the HTTP_PROXY environment variable, which would allow attackers to direct CGI programs which use this environment variable to use an attacker-specified HTTP proxy server (also known as a "httpoxy" attack). This affects all versions of spiffy-cgi-handlers before 0.5.
CVE-2016-6287 (severity: HIGH, weakness: CWE-19)
The "http-client" egg always used a HTTP_PROXY environment variable to determine whether HTTP traffic should be routed via a proxy, even when running as a CGI process. Under several web servers this would mean a user-supplied "Proxy" header could allow an attacker to direct all HTTP requests through a proxy (also known as a "httpoxy" attack). This affects all versions of http-client before 0.10.
CVE-2016-6288 (severity: CRITICAL, weakness: CWE-119)
The php_url_parse_ex function in ext/standard/url.c in PHP before 5.5.38 allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via vectors involving the smart_str data type.
CVE-2016-6289 (severity: HIGH, weakness: CWE-190)
Integer overflow in the virtual_file_ex function in TSRM/tsrm_virtual_cwd.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted extract operation on a ZIP archive.
CVE-2016-6290 (severity: CRITICAL, weakness: CWE-416)
ext/session/session.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 does not properly maintain a certain hash data structure, which allows remote attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact via vectors related to session deserialization.
CVE-2016-6291 (severity: CRITICAL, weakness: CWE-119)
The exif_process_IFD_in_MAKERNOTE function in ext/exif/exif.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (out-of-bounds array access and memory corruption), obtain sensitive information from process memory, or possibly have unspecified other impact via a crafted JPEG image.
CVE-2016-6292 (severity: MEDIUM, weakness: CWE-476)
The exif_process_user_comment function in ext/exif/exif.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted JPEG image.
CVE-2016-6293 (severity: CRITICAL, weakness: CWE-119)
The uloc_acceptLanguageFromHTTP function in common/uloc.cpp in International Components for Unicode (ICU) through 57.1 for C/C++ does not ensure that there is a '\0' character at the end of a certain temporary array, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a call with a long httpAcceptLanguage argument.
CVE-2016-6294 (severity: CRITICAL, weakness: CWE-125)
The locale_accept_from_http function in ext/intl/locale/locale_methods.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 does not properly restrict calls to the ICU uloc_acceptLanguageFromHTTP function, which allows remote attackers to cause a denial of service (out-of-bounds read) or possibly have unspecified other impact via a call with a long argument.
CVE-2016-6295 (severity: CRITICAL, weakness: CWE-416)
ext/snmp/snmp.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to cause a denial of service (use-after-free and application crash) or possibly have unspecified other impact via crafted serialized data, a related issue to CVE-2016-5773.
CVE-2016-6296 (severity: CRITICAL, weakness: CWE-119)
Integer signedness error in the simplestring_addn function in simplestring.c in xmlrpc-epi through 0.54.2, as used in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a long first argument to the PHP xmlrpc_encode_request function.
CVE-2016-6297 (severity: HIGH, weakness: CWE-119)
Integer overflow in the php_stream_zip_opener function in ext/zip/zip_stream.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted zip:// URL.
CVE-2016-6298 (severity: MEDIUM, weakness: CWE-200)
The _Rsa15 class in the RSA 1.5 algorithm implementation in jwa.py in jwcrypto before 0.3.2 lacks the Random Filling protection mechanism, which makes it easier for remote attackers to obtain cleartext data via a Million Message Attack (MMA).
CVE-2016-6299 (severity: HIGH, weakness: CWE-264)
The scm plug-in in mock might allow attackers to bypass the intended chroot protection mechanism and gain root privileges via a crafted spec file.
CVE-2016-6301 (severity: HIGH, weakness: CWE-399)
The recv_and_process_client_pkt function in networking/ntpd.c in busybox allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a communication loop.
CVE-2016-6302 (severity: HIGH, weakness: CWE-20)
The tls_decrypt_ticket function in ssl/t1_lib.c in OpenSSL before 1.1.0 does not consider the HMAC size during validation of the ticket length, which allows remote attackers to cause a denial of service via a ticket that is too short.
CVE-2016-6303 (severity: CRITICAL, weakness: CWE-787)
Integer overflow in the MDC2_Update function in crypto/mdc2/mdc2dgst.c in OpenSSL before 1.1.0 allows remote attackers to cause a denial of service (out-of-bounds write and application crash) or possibly have unspecified other impact via unknown vectors.
CVE-2016-6304 (severity: HIGH, weakness: CWE-401)
Multiple memory leaks in t1_lib.c in OpenSSL before 1.0.1u, 1.0.2 before 1.0.2i, and 1.1.0 before 1.1.0a allow remote attackers to cause a denial of service (memory consumption) via large OCSP Status Request extensions.
CVE-2016-6305 (severity: HIGH, weakness: CWE-20)
The ssl3_read_bytes function in record/rec_layer_s3.c in OpenSSL 1.1.0 before 1.1.0a allows remote attackers to cause a denial of service (infinite loop) by triggering a zero-length record in an SSL_peek call.
CVE-2016-6306 (severity: MEDIUM, weakness: CWE-125)
The certificate parser in OpenSSL before 1.0.1u and 1.0.2 before 1.0.2i might allow remote attackers to cause a denial of service (out-of-bounds read) via crafted certificate operations, related to s3_clnt.c and s3_srvr.c.
CVE-2016-6307 (severity: MEDIUM, weakness: CWE-400)
The state-machine implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted TLS messages, related to statem/statem.c and statem/statem_lib.c.
CVE-2016-6308 (severity: MEDIUM, weakness: CWE-399)
statem/statem_dtls.c in the DTLS implementation in OpenSSL 1.1.0 before 1.1.0a allocates memory before checking for an excessive length, which might allow remote attackers to cause a denial of service (memory consumption) via crafted DTLS messages.
CVE-2016-6309 (severity: CRITICAL, weakness: CWE-416)
statem/statem.c in OpenSSL 1.1.0a does not consider memory-block movement after a realloc call, which allows remote attackers to cause a denial of service (use-after-free) or possibly execute arbitrary code via a crafted TLS session.
CVE-2016-6310 (severity: MEDIUM, weakness: CWE-200)
oVirt Engine discloses the ENGINE_HTTPS_PKI_TRUST_STORE_PASSWORD in /var/log/ovirt-engine/engine.log file in RHEV before 4.0.
CVE-2016-6311 (severity: MEDIUM, weakness: CWE-200)
Get requests in JBoss Enterprise Application Platform (EAP) 7 disclose internal IP addresses to remote attackers.
CVE-2016-6312 (severity: MEDIUM, weakness: CWE-400)
The mod_dontdothat component of the mod_dav_svn Apache module in Subversion as packaged in Red Hat Enterprise Linux 5.11 does not properly detect recursion during entity expansion, which allows remote authenticated users with access to the webdav repository to cause a denial of service (memory consumption and httpd crash). NOTE: Exists as a regression to CVE-2009-1955.
CVE-2016-6313 (severity: MEDIUM, weakness: CWE-200)
The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.
CVE-2016-6316 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in Action View in Ruby on Rails 3.x before 3.2.22.3, 4.x before 4.2.7.1, and 5.x before 5.0.0.1 might allow remote attackers to inject arbitrary web script or HTML via text declared as "HTML safe" and used as attribute values in tag handlers.
CVE-2016-6317 (severity: HIGH, weakness: CWE-284)
Action Record in Ruby on Rails 4.2.x before 4.2.7.1 does not properly consider differences in parameter handling between the Active Record component and the JSON implementation, which allows remote attackers to bypass intended database-query restrictions and perform NULL checks or trigger missing WHERE clauses via a crafted request, as demonstrated by certain "[nil]" values, a related issue to CVE-2012-2660, CVE-2012-2694, and CVE-2013-0155.
CVE-2016-6318 (severity: HIGH, weakness: CWE-787)
Stack-based buffer overflow in the FascistGecosUser function in lib/fascist.c in cracklib allows local users to cause a denial of service (application crash) or gain privileges via a long GECOS field, involving longbuffer.
CVE-2016-6319 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in app/helpers/form_helper.rb in Foreman before 1.12.2, as used by Remote Execution and possibly other plugins, allows remote attackers to inject arbitrary web script or HTML via the label parameter.
CVE-2016-6320 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in app/assets/javascripts/host_edit_interfaces.js in Foreman before 1.12.2 allows remote authenticated users to inject arbitrary web script or HTML via the network interface device identifier in the host interface form.
CVE-2016-6321 (severity: HIGH, weakness: CWE-22)
Directory traversal vulnerability in the safer_name_suffix function in GNU tar 1.14 through 1.29 might allow remote attackers to bypass an intended protection mechanism and write to arbitrary files via vectors related to improper sanitization of the file_name parameter, aka POINTYFEATHER.
CVE-2016-6322 (severity: HIGH, weakness: CWE-264)
Red Hat QuickStart Cloud Installer (QCI) uses world-readable permissions for /etc/qci/answers, which allows local users to obtain the root password for the deployed system by reading the file.
CVE-2016-6323 (severity: HIGH, weakness: CWE-284)
The makecontext function in the GNU C Library (aka glibc or libc6) before 2.25 creates execution contexts incompatible with the unwinder on ARM EABI (32-bit) platforms, which might allow context-dependent attackers to cause a denial of service (hang), as demonstrated by applications compiled using gccgo, related to backtrace generation.
CVE-2016-6325 (severity: HIGH, weakness: CWE-264)
The Tomcat package on Red Hat Enterprise Linux (RHEL) 5 through 7, JBoss Web Server 3.0, and JBoss EWS 2 uses weak permissions for (1) /etc/sysconfig/tomcat and (2) /etc/tomcat/tomcat.conf, which allows local users to gain privileges by leveraging membership in the tomcat group.
CVE-2016-6327 (severity: MEDIUM, weakness: CWE-476)
drivers/infiniband/ulp/srpt/ib_srpt.c in the Linux kernel before 4.5.1 allows local users to cause a denial of service (NULL pointer dereference and system crash) by using an ABORT_TASK command to abort a device write operation.
CVE-2016-6328 (severity: MEDIUM, weakness: CWE-190)
A vulnerability was found in libexif. An integer overflow when parsing the MNOTE entry data of the input file. This can cause Denial-of-Service (DoS) and Information Disclosure (disclosing some critical heap chunk metadata, even other applications' private data).
CVE-2016-6329 (severity: MEDIUM, weakness: CWE-200)
OpenVPN, when using a 64-bit block cipher, makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTP-over-OpenVPN session using Blowfish in CBC mode, aka a "Sweet32" attack.
CVE-2016-6330 (severity: CRITICAL, weakness: CWE-502)
The server in Red Hat JBoss Operations Network (JON), when SSL authentication is not configured for JON server / agent communication, allows remote attackers to execute arbitrary code via a crafted HTTP request, related to message deserialization. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-3737.
CVE-2016-6331 (severity: HIGH, weakness: CWE-284)
ApiParse in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to bypass intended per-title read restrictions via a parse action to api.php.
CVE-2016-6332 (severity: HIGH, weakness: CWE-200)
MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1, when $wgBlockDisablesLogin is true, might allow remote attackers to obtain sensitive information by leveraging failure to terminate sessions when a user account is blocked.
CVE-2016-6333 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in the CSS user subpage preview feature in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via the edit box in Special:MyPage/common.css.
CVE-2016-6334 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in the Parser::replaceInternalLinks2 method in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via vectors involving replacement of percent encoding in unclosed internal links.
CVE-2016-6335 (severity: HIGH, weakness: CWE-200)
MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 does not generate head items in the context of a given title, which allows remote attackers to obtain sensitive information via a parse action to api.php.
CVE-2016-6336 (severity: MEDIUM, weakness: CWE-284)
MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote authenticated users with undelete permissions to bypass intended suppressrevision and deleterevision restrictions and remove the revision deletion status of arbitrary file revisions by using Special:Undelete.
CVE-2016-6337 (severity: HIGH, weakness: CWE-284)
MediaWiki 1.27.x before 1.27.1 might allow remote attackers to bypass intended session access restrictions by leveraging a call to the UserGetRights function after Session::getAllowedUserRights.
CVE-2016-6338 (severity: MEDIUM, weakness: CWE-284)
ovirt-engine-webadmin, as used in Red Hat Enterprise Virtualization Manager (aka RHEV-M) for Servers and RHEV-M 4.0, allows physically proximate attackers to bypass a webadmin session timeout restriction via vectors related to UI selections, which trigger repeating queries.
CVE-2016-6340 (severity: HIGH, weakness: CWE-254)
The kickstart file in Red Hat QuickStart Cloud Installer (QCI) forces use of MD5 passwords on deployed systems, which makes it easier for attackers to determine cleartext passwords via a brute-force attack.
CVE-2016-6341 (severity: MEDIUM, weakness: CWE-200)
oVirt Engine before 4.0.3 does not include DWH_DB_PASSWORD in the list of keys to hide in log files, which allows local users to obtain sensitive password information by reading engine log files.
CVE-2016-6342 (severity: HIGH, weakness: CWE-284)
elog 3.1.1 allows remote attackers to post data as any username in the logbook.
CVE-2016-6343 (severity: MEDIUM, weakness: CWE-79)
JBoss BPM Suite 6 is vulnerable to a reflected XSS via dashbuilder. Remote attackers can entice authenticated users that have privileges to access dashbuilder (usually admins) to click on links to /dashbuilder/Controller containing malicious scripts. Successful exploitation would allow execution of script code within the context of the affected user.
CVE-2016-6344 (severity: MEDIUM, weakness: CWE-200)
Red Hat JBoss BPM Suite 6.3.x does not include the HTTPOnly flag in a Set-Cookie header for session cookies, which makes it easier for remote attackers to obtain potentially sensitive information via script access to the cookies.
CVE-2016-6345 (severity: MEDIUM, weakness: CWE-200)
RESTEasy allows remote authenticated users to obtain sensitive information by leveraging "insufficient use of random values" in async jobs.
CVE-2016-6346 (severity: HIGH, weakness: NVD-CWE-Other)
RESTEasy enables GZIPInterceptor, which allows remote attackers to cause a denial of service via unspecified vectors.
CVE-2016-6347 (severity: MEDIUM, weakness: CWE-79)
Cross-site scripting (XSS) vulnerability in the default exception handler in RESTEasy allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
CVE-2016-6348 (severity: MEDIUM, weakness: CWE-79)
JacksonJsonpInterceptor in RESTEasy might allow remote attackers to conduct a cross-site script inclusion (XSSI) attack.
CVE-2016-6349 (severity: LOW, weakness: CWE-200)
The machinectl command in oci-register-machine allows local users to list running containers and possibly obtain sensitive information by running that command.
CVE-2016-6350 (severity: MEDIUM, weakness: CWE-476)
OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (NULL pointer dereference and panic) via a sysctl call with a path starting with 10,9.
CVE-2016-6351 (severity: MEDIUM, weakness: NVD-CWE-Other)
The esp_do_dma function in hw/scsi/esp.c in QEMU (aka Quick Emulator), when built with ESP/NCR53C9x controller emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or execute arbitrary code on the QEMU host via vectors involving DMA read into ESP command buffer.
CVE-2016-6352 (severity: HIGH, weakness: CWE-787)
The OneLine32 function in io-ico.c in gdk-pixbuf before 2.35.3 allows remote attackers to cause a denial of service (out-of-bounds write and crash) via crafted dimensions in an ICO file.
CVE-2016-6353 (severity: MEDIUM, weakness: CWE-863)
Cloudera Search in CDH before 5.7.0 allows unauthorized document access because Solr Queries by document id can bypass Sentry document-level security via the RealTimeGetHandler.
CVE-2016-6354 (severity: CRITICAL, weakness: CWE-119)
Heap-based buffer overflow in the yy_get_next_buffer function in Flex before 2.6.1 might allow context-dependent attackers to cause a denial of service or possibly execute arbitrary code via vectors involving num_to_read.