RunCMS XSS Vulnerability via User Agent

Type securityvulns
Reporter Securityvulns
Modified 2010-07-08T00:00:00


Title: RunCMS XSS Vulnerability via User Agent Vendor: RunCMS Product: RunCMS Tested Version: 2.1 Threat Class: XSS Severity: Medium Remote: yes Local: no Discovered By: Andrei Rimsa Alvares

===== Description =====

RunCMS is prone to a XSS vulnerability by mangling the user-agent field on a http request to a script within the forum module.

----- modules/forum/check.php ----- 01: ... 10: echo "BROWSER: ".$_SERVER['HTTP_USER_AGENT']; ----- modules/forum/check.php -----

===== Impact =====

Malicious java script code can be executed in the context of the affected web site.

===== Proof of Concept =====

wget --user-agent="

" http://target/modules/forum/check.php

===== Workaround =====

Remove the affected file form the system: modules/forum/check.php.

===== Disclosure Timeline =====

June, 16 2010 - Vendor notification. June, 17 2010 - Vendor response confirming the bug. July, 07 2010 - Public disclosure.

===== References =====

Hotmail: Free, trusted and rich email service.