XSS vulnerability in LiSK CMS

Vulnerability ID: HTB22372
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_product.html
Product: LiSK CMS
Vendor: Createch-group
Vulnerable Version: 4.4
Vendor Notification: 05 May 2010
Vulnerability Type: XSS (Cross Site Scripting)
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Medium
Credit: High-Tech Bridge SA (http://www.htbridge.ch/)

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

The vulnerability exists due to failure in the "/edit_email.php" script to properly sanitize user-supplied input in "id" 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_to_cp/edit_email.php?&id=contact_form_214%27+--+%3Cimg+src=x+onerror=alert%28document.cookie%29%3E