[Full-disclosure] [ GLSA 200505-10 ] phpBB: Cross-Site Scripting Vulnerability

[Sune Kloppenborg Jeppesen]

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Gentoo Linux Security Advisory                           GLSA 200505-10
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: phpBB: Cross-Site Scripting Vulnerability
      Date: May 14, 2005
      Bugs: #90213
        ID: 200505-10

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Synopsis
========

phpBB is vulnerable to a cross-site scripting attack that could allow
arbitrary scripting code execution.

Background
==========

phpBB is an Open Source bulletin board package.

Affected packages
=================

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  www-apps/phpBB      < 2.0.15                            >= 2.0.15

Description
===========

phpBB is vulnerable to a cross-site scripting vulnerability due to
improper sanitization of user supplied input. Coupled with poor
validation of BBCode URLs which may be included in a forum post, an
unsuspecting user may follow a posted link triggering the
vulnerability.

Impact
======

Successful exploitation of the vulnerability could cause arbitrary
scripting code to be executed in the browser of a user.

Workaround
==========

There are no known workarounds at this time.

Resolution
==========

All phpBB users should upgrade to the latest version:

    emerge --sync
    emerge --ask --oneshot --verbose ">=www-apps/phpbb-2.0.15"

References
==========

  [ 1 ] BugTraq ID 13344
        http://www.securityfocus.com/bid/13344/info/
  [ 2 ] SecurityTracker ID 1013918
        http://securitytracker.com/id?1013918

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200505-10.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security at gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0
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