bugtraq - XSS vulnerability in PortalApp

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Date: Tue, 29 Jun 2010 10:05:42 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: XSS vulnerability in PortalApp

Vulnerability ID: HTB22442
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_portalapp_1.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 "/content.asp" script to properly sanitize user-supplied input in "keywords" 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/content.asp?CatId=&ContentType=&keywords=sd%27%22+style=position:absolute;left:0;top:0;width:100%25;height:100%25;+onmouseover=alert%28123%29+x&search=%3E&do_search=1