full-disclosure - [ GLSA 200908-09 ] DokuWiki: Local file inclusion

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Message-ID: <20090818233746.24f1b1b6@neon>
Date: Tue, 18 Aug 2009 23:37:46 +0200
From: Alex Legler <a3li@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 200908-09 ] DokuWiki: Local file inclusion

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Gentoo Linux Security Advisory                           GLSA 200908-09
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                                            http://security.gentoo.org/
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  Severity: High
     Title: DokuWiki: Local file inclusion
      Date: August 18, 2009
      Bugs: #272431
        ID: 200908-09

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Synopsis
========

An input sanitation error in DokuWiki might lead to the dislosure of
local files or even the remote execution of arbitrary code.

Background
==========

DokuWiki is a standards compliant Wiki system written in PHP.

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

    -------------------------------------------------------------------
     Package            /    Vulnerable    /                Unaffected
    -------------------------------------------------------------------
  1  www-apps/dokuwiki      < 2009-02-14b               >= 2009-02-14b

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

girex reported that data from the "config_cascade" parameter in
inc/init.php is not properly sanitized before being used.

Impact
======

A remote attacker could exploit this vulnerability to execute PHP code
from arbitrary local, or, when the used PHP version supports ftp://
URLs, also from remote files via FTP. Furthermore, it is possible to
disclose the contents of local files. NOTE: Successful exploitation
requires the PHP option "register_globals" to be enabled.

Workaround
==========

Disable "register_globals" in php.ini.

Resolution
==========

All DokuWiki users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose =www-apps/dokuwiki-2009-02-14b

References
==========

  [ 1 ] CVE-2009-1960
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1960

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

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

  http://security.gentoo.org/glsa/glsa-200908-09.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@...too.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2009 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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