WHMCompleteSolution (WHMCS) 5.0 - 'KnowledgeBase.php?search' Cross-Site Scripting

Author: Shadman Tanjim
type: webapps
platform: php
port: 0
date_added: 2012-05-31
date_updated: 2017-01-24
verified: 1
codes: OSVDB-83618
tags: 
aliases: 
screenshot_url: 
application_url: 

source: https://www.securityfocus.com/bid/53740/info

WHMCS is prone to a cross-site scripting vulnerability and multiple HTML-parameter-pollution vulnerabilities because it fails to properly sanitize user-supplied input.

Attacker-supplied HTML and script code would run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials, control how the page is rendered to the user, and override existing hard-coded HTTP parameters which compromises the application.

WHMCS 5.0 is vulnerable; other versions may also be affected.

http://www.example.com/knowledgebase.php?action = [XSS]