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TITLE:
Invision Power Board Nested BBCodes Script Insertion

SECUNIA ADVISORY ID:
SA29378

VERIFY ADVISORY:
http://secunia.com/advisories/29378/

CRITICAL:
Less critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Invision Power Board 2.x
http://secunia.com/product/3705/

DESCRIPTION:
A vulnerability has been reported in Invision Power Board, which can
be exploited by malicious people to conduct script insertion
attacks.

Input passed as nested custom BBCodes is not properly sanitised
before being stored. This can be exploited to insert intrinsic events
with arbitrary JavaScript code, which is executed in a user's browser
session in context of an affected site when the malicious data is
viewed.

The vulnerability is reported in version 2.3.4 downloaded before
2008-03-13. Other versions may also be affected.

SOLUTION:
Update to version 2.3.4 downloaded after 2008-03-12.

Apply the vendor's official patch:
http://forums.invisionpower.com/index.php?showtopic=270637

PROVIDED AND/OR DISCOVERED BY:
The vendor credits criticalsecurity.net.

ORIGINAL ADVISORY:
http://forums.invisionpower.com/index.php?showtopic=270637

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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