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TITLE:
Phorum "Username" Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA16667

VERIFY ADVISORY:
http://secunia.com/advisories/16667/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

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

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

Input passed to the "Username" field in "register.php" isn't properly
sanitised before being used. This can be exploited to inject arbitrary
HTML and script code, which will be executed in a user's browser
session in context of an affected site when the malicious user data
is viewed.

The vulnerability has been reported in version 5.0.17a and prior.

SOLUTION:
Update to version 5.0.18:
http://phorum.org/downloads/phorum-5.0.18.tar.gz

PROVIDED AND/OR DISCOVERED BY:
Scott Dewey

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