JelSoft vBulletin Multiple XSS Vulnerabilities

Type securityvulns
Reporter Securityvulns
Modified 2004-03-17T00:00:00


Vendor : Jelsoft Enterprises URL : Version : vBulletin 3.0.0 RC4 && Others Risk : Cross Site Scripting

Description: vBulletin is a powerful, scalable and fully customisable forums package for your web site. Based on the PHP language, backed with a blisteringly fast MySQL back-end database, vBulletin is the ideal community solution for all medium-to-large sites.

Cross Site Scripting: JelSoft vBulletin is prone to attack in three different files (maybe more) The files affected are "showthread.php", "forumdisplay.php", and also the "memberlist.php" file. The "memberlist.php" does not seem to be prone to the same attack I am about to talk about in versions three and later. The type of XSS that takes place though on vBulletin is what I would call a higher risk XSS issue. What I mean by that is a lot of times slashes will be added to certain characters, or certain strings/characters disallowed, but in vBulletin you can enter pretty much anything and have it execute successfully. This makes it a whole lot easier for an attacker to use these vulnerabilities to disclose a users information. Below are examples of the issues I have talked about here. Remember, the "memberlist.php" issue only seems to affect versions prior to 3.0, but the others affect all versions.

showthread.php?t=[VID]&page=[INT][XSS] forumdisplay.php?f=[VID]&page=[INT]&sort=lastpost&order=[XSS] memberlist.php?action=getall&what=[XSS]&ltr=&perpage=25&orderby=username

Solution: JelSoft were notified and there will probably be a release of a patch or update to resolve these issues. Who knows, they might even charge you for the upgrade also :P heheh

Credits: Credits go to JeiAr of the GulfTech Security Research Team.