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Gentoo Linux Security Advisory                           GLSA 200502-33
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                                            http://security.gentoo.org/
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  Severity: Low
     Title: MediaWiki: Multiple vulnerabilities
      Date: February 28, 2005
      Bugs: #80729, #82954
        ID: 200502-33

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Synopsis
========

MediaWiki is vulnerable to cross-site scripting, data manipulation and
security bypass attacks.

Background
==========

MediaWiki is a collaborative editing software, used by big projects
like Wikipedia.

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

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  www-apps/mediawiki      < 1.3.11                        >= 1.3.11

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

A security audit of the MediaWiki project discovered that MediaWiki is
vulnerable to several cross-site scripting and cross-site request
forgery attacks, and that the image deletion code does not sufficiently
sanitize input parameters.

Impact
======

By tricking a user to load a carefully crafted URL, a remote attacker
could hijack sessions and authentication cookies to inject malicious
script code that will be executed in a user's browser session in
context of the vulnerable site, or use JavaScript submitted forms to
perform restricted actions. Using the image deletion flaw, it is also
possible for authenticated administrators to delete arbitrary files via
directory traversal.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MediaWiki users should upgrade to the latest available version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=www-apps/mediawiki-1.3.11"

References
==========

  [ 1 ] Secunia Advisory SA14125
        http://secunia.com/advisories/14125/
  [ 2 ] CAN-2005-0534
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0534
  [ 3 ] CAN-2005-0535
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0535
  [ 4 ] CAN-2005-0536
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0536

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

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

  http://security.gentoo.org/glsa/glsa-200502-33.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 2005 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/2.0