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Gentoo Linux Security Advisory                           GLSA 200604-11
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Crossfire server: Denial of Service and potential arbitrary
            code execution
      Date: April 22, 2006
      Bugs: #126169
        ID: 200604-11

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Synopsis
========

The Crossfire game server is vulnerable to a Denial of Service and
potentially to the execution of arbitrary code.

Background
==========

Crossfire is a cooperative multiplayer graphical adventure and
role-playing game. The Crossfire game server allows various compatible
clients to connect to participate in a cooperative game.

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

    -------------------------------------------------------------------
     Package                        /  Vulnerable  /        Unaffected
    -------------------------------------------------------------------
  1  games-server/crossfire-server       < 1.9.0              >= 1.9.0

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

Luigi Auriemma discovered a vulnerability in the Crossfire game server,
in the handling of the "oldsocketmode" option when processing overly
large requests.

Impact
======

An attacker can set up a malicious Crossfire client that would send a
large request in "oldsocketmode", resulting in a Denial of Service on
the Crossfire server and potentially in the execution of arbitrary code
on the server with the rights of the game server.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Crossfire server users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
">=games-server/crossfire-server-1.9.0"

References
==========

  [ 1 ] CVE-2006-1010
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1010

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

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

  http://security.gentoo.org/glsa/glsa-200604-11.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/2.0