HTB22865: XSS vulnerability in xtcModified

[advisory () htbridge ch]

Vulnerability ID: HTB22865
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_xtcmodified_2.html
Product: xtcModified
Vendor: xtcModified Team ( http://www.xtc-modified.org/ ) 
Vulnerable Version: 1.05 and probably prior versions
Vendor Notification: 17 February 2011 
Vulnerability Type: XSS (Cross Site Scripting)
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 "admin/orders.php" script to properly sanitize user-supplied input in 
"selected_box" 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/admin/orders.php?selected_box=customers";><script>alert(document.cookie)</script>&status=0