[SA18252] phpBB "url" bbcode Script Insertion Vulnerability

TITLE:
phpBB "url" bbcode Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA18252

VERIFY ADVISORY:
http://secunia.com/advisories/18252/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
phpBB 2.x
http://secunia.com/product/463/

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

Input passed via the "url" bbcode tag 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 with the
Microsoft Internet Explorer browser.

The vulnerability has been reported in version 2.0.18. Prior versions
may also be affected.

SOLUTION:
Update to version 2.0.19.
http://www.phpbb.com/downloads.php

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

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

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http://secunia.com/about_secunia_advisories/

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