[ GLSA 200609-10 ] DokuWiki: Arbitrary command execution

[Sune Kloppenborg Jeppesen <jaervosz () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200609-10
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                                            http://security.gentoo.org/
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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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