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Category:   Application (Forum/Board/Portal)  >   vBulletin Vendors:   Jelsoft Enterprises
[Vendor Disputes This Report] vBulletin Input Validation Hole in 'member.php' Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1016348
SecurityTracker URL:  http://securitytracker.com/id/1016348
CVE Reference:   CVE-2006-3253   (Links to External Site)
Updated:  May 12 2009
Original Entry Date:  Jun 21 2006
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Exploit Included:  Yes  
Version(s): 3.5.x
Description:   A vulnerability was reported in vBulletin. A remote user can conduct cross-site scripting attacks. [The vendor disputes this report.]

The 'member.php' script does not properly filter HTML code from user-supplied input in the 'u' parameter before displaying the input. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the vBulletin software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

A demonstration exploit is provided:

/vb/member.php?u=[XSS]

CrAzY CrAcKeR discovered this vulnerability.

[Editor's note: The vendor disputes this report. The vendor indicates that the variable is passed through an internal class before the value can be accessed by the code. Initial testing confirms the vendor's position. We have asked the author of the original advisory for more information. This alert will be updated shortly.]

Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the vBulletin software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   No solution was available at the time of this entry.

[Editor's note: The vendor disputes this report.]

Vendor URL:  www.vbulletin.com/ (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  vBulletin<<--v3.5.X

=============================================

Discovered By: CrAzY CrAcKeR 

Site: www.alshmokh.com 

I want to thank my friend:- 

nono225-mHOn-rageh-Lover Hacker-Breeeeh

BoNy_m-Rootshill-LiNuX_rOOt-Sw33t h4ck3r

=============================================


Example:- 

/vb/member.php?u=[XSS]


=================================== 

Email: CrAzY.CrAcKeR(at)hotmail(dot)com 

 
 


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