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[SA21580] WoltLab Burning Board Attachment Script Insertion

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Wed Aug 23 2006 - 08:47:05 CDT


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TITLE:
WoltLab Burning Board Attachment Script Insertion

SECUNIA ADVISORY ID:
SA21580

VERIFY ADVISORY:
http://secunia.com/advisories/21580/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
From remote

SOFTWARE:
Woltlab Burning Board 2.x
http://secunia.com/product/131/

DESCRIPTION:
ZeberuS has reported a vulnerability in Woltlab Burning Board, which
can be exploited by malicious people to conduct script insertion
attacks.

The vulnerability is caused due to an input validation error in the
attachment upload handling. This can be exploited to upload a
malicious image containing arbitrary HTML and script code, which is
executed in a user's browser session in context of an affected site
when the malicious image (e.g. a GIF file with a ".jpg" file
extension) is viewed with the Microsoft Internet Explorer browser.

The vulnerability has been reported in version 2.3.5. Other versions
may also be affected.

SOLUTION:
Grant only trusted users access to the application.

PROVIDED AND/OR DISCOVERED BY:
ZeberuS

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