Pligg Auto-Voter Using XSS to Bypass CSRF Protection
Explanation:
Pligg Suffers from a Reflective Cross Site Scripting vulnerability in
index.php. For the $_GET['category'] variable. Exploit code was written that
uses this flaw to bypass the CSRF protection to then vote on any pligg article
of the attackers choosing. I took inspiration from the Myspace Sammy worm
utilizing XMLHttpRequest() to read the randomly generated token protection
requests from forgery. This is a more serious attack when combined with my
Captcha Implementation Bypass (http://www.rooksecurity.com/blog/?p=17) which
allows an attacker to create new user accounts.