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TITLE:
phpBB BBcode "url" Script Insertion Vulnerability

SECUNIA ADVISORY ID:
SA16149

VERIFY ADVISORY:
http://secunia.com/advisories/16149/

CRITICAL:
Moderately critical

IMPACT:
Unknown, Cross Site Scripting

WHERE:
>From remote

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

DESCRIPTION:
Some vulnerabilities have been reported in phpBB. Some have unknown
impacts, and another can be exploited by malicious people to conduct
script insertion attacks.

1) Input passed to the BBcode "url" tag isn't properly sanitised
before being used. This can be exploited to inject arbitrary script
code, which will be executed in a user's browser session in context
of an affected site when the malicious data is viewed with the
Microsoft Internet Explorer browser.

2) Some unspecified errors have unknown minor impacts.

The vulnerabilities have been reported in version 2.0.16. Prior
versions may also be affected.

SOLUTION:
Update to version 2.0.17.
http://www.phpbb.com/downloads.php

PROVIDED AND/OR DISCOVERED BY:
1) Aaron Horst
2) Reported by vendor

ORIGINAL ADVISORY:
http://www.phpbb.com/phpBB/viewtopic.php?t=308490

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About:
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everybody keeping their systems up to date against the latest
vulnerabilities.

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