Stored XSS vulnerability in AneCMS blog module

Vulnerability ID: HTB22407
Reference: http://www.htbridge.ch/advisory/stored_xss_vulnerability_in_anecms_blog_module.html
Product: AneCMS
Vendor: AneCMS Team
Vulnerable Version: 1.3 and Probably Prior Versions
Vendor Notification: 28 May 2010 
Vulnerability Type: Stored XSS (Cross Site Scripting)
Status: Fixed by Vendor
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 blog module script "/modules/blog/index.php" to properly sanitize user-supplied input in "comment" 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 by entering in comment text area for example "hello <script>alert(document.cookie)</script>".


Solution: Upgrade to the most recent version