VBulletin Image Tag Cross-Agent Scripting Vulnerability

BID:4315

Info

VBulletin Image Tag Cross-Agent Scripting Vulnerability

Bugtraq ID: 4315
Class: Input Validation Error
CVE:
Remote: Yes
Local: No
Published: Mar 19 2002 12:00AM
Updated: Mar 19 2002 12:00AM
Credit: DIscovery of this issue is credited to Cano2 <[email protected]>.
Vulnerable: VBulletin VBulletin 2.2.2
VBulletin VBulletin 2.2.1
VBulletin VBulletin 2.2 .0
VBulletin VBulletin 2.0 rc 3
VBulletin VBulletin 2.0 rc 2
Not Vulnerable: VBulletin VBulletin 2.2.4
VBulletin VBulletin 2.2.3

Discussion

VBulletin Image Tag Cross-Agent Scripting Vulnerability

vBulletin is commercial web forum software written in PHP and back-ended by a MySQL database. It will run on most Linux and Unix variants, as well as Microsoft operating systems.

vBulletin includes functionality to allow forum users to post images in messages. To post an image, a user simply includes a link to the image inside of [img] tags. However, vBulletin does not adequately filter script code from image tags, making it prone to cross-agent scripting attacks.

Additionally, it has been reported that script code is not filtered from other tags, such as [url], [email], etc.

It is not known whether vBulletin Lite is also affected by this vulnerability.

Exploit / POC

VBulletin Image Tag Cross-Agent Scripting Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

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