XSS in Acuity CMS

From: advisory@htbridge.ch
To: bugtraq@securityfocus.com
Subject: XSS in Acuity CMS

Vulnerability ID: HTB22352
Reference: http://www.htbridge.ch/advisory/xss_in_acuity_cms.html
Product: Acuity CMS (asp version)
Vendor: The Collective
Vulnerable Version: 2.6.2 (ASP) and Probably Prior Versions
Vendor Notification: 19 April 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 "/admin/pages/add_page.asp" script to properly sanitize user-supplied input in "page" 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: 


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