XSS vulnerability in Zimplit CMS

[advisory@xxxxxxxxxxx]

Vulnerability ID: HTB22715
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_zimplit_cms.html
Product: Zimplit CMS
Vendor: Zimplit  ( http://www.zimplit.com/ ) 
Vulnerable Version: Current at 22.11.2010 and Probably Prior Versions
Vendor Notification: 22 November 2010 
Vulnerability Type: XSS (Cross Site Scripting)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Medium 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing 
(http://www.htbridge.ch/) 

Vulnerability Details:
User can execute arbitrary JavaScript code within the vulnerable application.

The vulnerability exists due to failure in the "zimplit.php" script on "load" 
action to properly sanitize user-supplied input in "file" variable. 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.

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


http://host/path/zimplit.php?action=load&file=%3Cscript%3Ealert%28document.cookie%29%3C/script%3E