From: Raphael Marichez (falcogentoo.org)
Date: Sat Oct 20 2007 - 15:36:30 CDT

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Gentoo Linux Security Advisory GLSA 200710-21
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                                            http://security.gentoo.org/
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  Severity: High
     Title: TikiWiki: Arbitrary command execution
      Date: October 20, 2007
      Bugs: #195503
        ID: 200710-21

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Synopsis
========

Tikiwiki contains a command injection vulnerability which may allow
remote execution of arbitrary code.

Background
==========

TikiWiki is an open source content management system written in PHP.

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

    -------------------------------------------------------------------
     Package / Vulnerable / Unaffected
    -------------------------------------------------------------------
  1 www-apps/tikiwiki < 1.9.8.1 >= 1.9.8.1

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

ShAnKaR reported that input passed to the "f" array parameter in
tiki-graph_formula.php is not properly verified before being used to
execute PHP functions.

Impact
======

An attacker could execute arbitrary code with the rights of the user
running the web server by passing a specially crafted parameter string
to the tiki-graph_formula.php file.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All TikiWiki users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-apps/tikiwiki-1.9.8.1"

References
==========

  [ 1 ] CVE-2007-5423
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-5423

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

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

  http://security.gentoo.org/glsa/glsa-200710-21.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
securitygentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2007 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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