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Gentoo Linux Security Advisory                           GLSA 200609-20
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   Severity: High
      Title: DokuWiki: Shell command injection and Denial of Service
       Date: September 28, 2006
       Bugs: #149266
         ID: 200609-20

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Synopsis
========

DokuWiki is vulnerable to shell command injection and Denial of Service
attacks when using ImageMagick.

Background
==========

DokuWiki is a wiki targeted at developer teams, workgroups and small
companies. It does not use a database backend.

Affected packages
=================

     -------------------------------------------------------------------
      Package            /   Vulnerable   /                  Unaffected
     -------------------------------------------------------------------
   1  www-apps/dokuwiki      < 20060309e                   >= 20060309e

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

Input validation flaws have been discovered in the image handling of
fetch.php if ImageMagick is used, which is not the default method.

Impact
======

A remote attacker could exploit the flaws to execute arbitrary shell
commands with the rights of the web server daemon or cause a Denial of
Service.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All DokuWiki users should upgrade to the latest version:

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=www-apps/dokuwiki-20060309e"

References
==========

   [ 1 ] DokuWiki Announcement
         http://www.freelists.org/archives/dokuwiki/09-2006/msg00278.html

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

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

   http://security.gentoo.org/glsa/glsa-200609-20.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 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/2.5


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