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TITLE:
Phorum BBcode Nested "img" Tags Script Insertion

SECUNIA ADVISORY ID:
SA32225

VERIFY ADVISORY:
http://secunia.com/advisories/32225/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
Phorum 5.x
http://secunia.com/advisories/product/4144/

DESCRIPTION:
Julian A. Rodriguez has reported a vulnerability in Phorum, which can
be exploited by malicious people to conduct script insertion attacks.

Input passed as private messages or forum posts is not properly
sanitised for nested "[img]" tags before being stored. This can be
exploited to insert arbitrary HTML and script code, which is executed
in a user's browser session in context of an affected site when the
malicious data is viewed.

Successful exploitation requires that the BBcode module is enabled.

The vulnerability is reported in version 5.2.8. Prior versions may
also be affected.

SOLUTION:
Update to version 5.2.9 or later.

PROVIDED AND/OR DISCOVERED BY:
Julian A. Rodriguez

ORIGINAL ADVISORY:
Phorum:
http://www.phorum.org/phorum5/read.php?64,133699

Julian A. Rodriguez:
http://nulledcore.com/?p=126

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