bugtraq - XSS vulnerability in SiteLoom CMS

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Message-Id: <201008051353.o75DrMOF088784@htbridge.ch>
Date: Thu, 5 Aug 2010 15:53:22 +0200 (CEST)
From: advisory@...ridge.ch
To: bugtraq@...urityfocus.com
Subject: XSS vulnerability in SiteLoom CMS

Vulnerability ID: HTB22516
Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_siteloom_cms.html
Product: SiteLoom CMS
Vendor: SiteLoom ApS ( http://www.siteloom.dk/ ) 
Vulnerable Version: Current at 21.07.2010 and Probably Prior Versions
Vendor Notification: 22 July 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 "index.php" script to properly sanitize user-supplied input in "mailform_1" 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/index.php?pageid=8&mailform_send=true&confirm_value=send_okay&mailform_1=%22%3E%3Cscript%3Ealert%28document.cookie%29%3C/script%3E

Solution: Upgrade to the most recent version