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Gentoo Linux Security Advisory                           GLSA 200609-10
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  Severity: High
     Title: DokuWiki: Arbitrary command execution
      Date: September 14, 2006
      Bugs: #146800
        ID: 200609-10

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Synopsis
========

Vulnerabilities in some accessory scripts of DokuWiki allow remote code
execution.

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      < 20060309d                   >= 20060309d

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

"rgod" discovered that DokuWiki doesn't sanitize the X-FORWARDED-FOR
HTTP header, allowing the injection of arbitrary contents - such as PHP
commands - into a file. Additionally, the accessory scripts installed
in the "bin" DokuWiki directory are vulnerable to directory traversal
attacks, allowing to copy and execute the previously injected code.

Impact
======

A remote attacker may execute arbitrary PHP (and thus probably system)
commands with the permissions of the user running the process serving
DokuWiki pages.

Workaround
==========

Disable remote access to the "bin" subdirectory of the DokuWiki
installation. Remove the directory if you don't use the scripts in
there.

Resolution
==========

All DokuWiki users should upgrade to the latest version:

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

References
==========

  [ 1 ] CVE-2006-4674
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4674
  [ 2 ] CVE-2006-4675
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4675
  [ 3 ] CVE-2006-4679
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4679

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

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

  http://security.gentoo.org/glsa/glsa-200609-10.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@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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