XSS vulnerability in PortalApp

Cross Site Scripting Penetration Testing Ethical Hacking 14 June Vulnerability Details Vulnerable Version Vulnerability Type Vendor Notification exploitation High-Tech Bridge Probably Prior Versions Not Fixed Vendor Alerted Awaiting Vendor Response

Vulnerability ID: HTB22443
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_portalapp_2.html
Product: PortalApp
Vendor: Latek
Vulnerable Version: 4.0 and Probably Prior Versions
Vendor Notification: 14 June 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 "login.asp" script to properly sanitize user-supplied input in "email" 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/login.asp?email=sd%40sd.df%27%22%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3E&search_btn=SEND&action=lookup&do_search=1