Boastmachine.txt

`Advisory : Cross Site Scripting in Boastmachine (http://boastology.com/)  
Release Date : 17/05/2005  
Last Modified : 17/05/2005  
Author : Yunus Emre Yilmaz ( http://yns.zaxaz.com)  
Application : BoastMachine v3.1 ( maybe older versions)  
Risk : High  
  
Problem : Form action values in admin.php and index.php (maybe other pages) isn't properly sanitized before being returned to page.Form action value  
is otomatically coming from $_SERVER["PHP_SELF"];.And This is changeable from query string.  
  
If I access page like admin.php/XSS $_SERVER["PHP_SELF"] returns as admin.php/XSS.So , an attacker basicly inject malicious  
HTML/JS codes into page.  
  
Proof Of Concept : admin.php/"><script>alert('xss')</script>  
  
Solution : Edit the source code , and change it $_SERVER["SCRIPT_NAME"] or filter it before printing in page.  
  
Original Advisory : http://yns.zaxaz.com/advisories/bostmachine.txt  
`