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Gentoo Linux Security Advisory                           GLSA 200407-14
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                                            http://security.gentoo.org/
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  Severity: High
     Title: Unreal Tournament 2003/2004: Buffer overflow in 'secure'
            queries
      Date: July 19, 2004
      Bugs: #54726
        ID: 200407-14

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Synopsis
========

Game servers based on the Unreal engine are vulnerable to remote code
execution through malformed 'secure' queries.

Background
==========

Unreal Tournament 2003 and 2004 are popular first-person-shooter games.
They are both based on the Unreal engine, and can be used in a game
server / client setup.

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

    -------------------------------------------------------------------
     Package                  /   Vulnerable   /            Unaffected
    -------------------------------------------------------------------
  1  games-fps/ut2003             <= 2225-r2                >= 2225-r3
  2  games-server/ut2003-ded      <= 2225-r1                >= 2225-r2
  3  games-fps/ut2004               < 3236                     >= 3236
  4  games-fps/ut2004-demo        <= 3120-r3                >= 3120-r4
    -------------------------------------------------------------------
     4 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

The Unreal-based game servers support a specific type of query called
'secure'. Part of the Gamespy protocol, this query is used to ask if
the game server is able to calculate an exact response using a provided
string. Luigi Auriemma found that sending a long 'secure' query
triggers a buffer overflow in the game server.

Impact
======

By sending a malicious UDP-based 'secure' query, an attacker could
execute arbitrary code on the game server.

Workaround
==========

Users can avoid this vulnerability by not using Unreal Tournament to
host games as a server. All users running a server should upgrade to
the latest versions.

Resolution
==========

All Unreal Tournament users should upgrade to the latest available
versions:

    # emerge sync

    # emerge -pv ">=games-fps/ut2003-2225-r3"
    # emerge ">=games-fps/ut2003-2225-r3"

    # emerge -pv ">=games-server/ut2003-ded-2225-r2"
    # emerge ">=games-server/ut2003-ded-2225-r2"

    # emerge -pv ">=games-fps/ut2004-3236"
    # emerge ">=games-fps/ut2004-3236"

    # emerge -pv ">=games-fps/ut2004-demo-3120-r4"
    # emerge ">=games-fps/ut2004-demo-3120-r4"

References
==========

  [ 1 ] Luigi Auriemma advisory
        http://aluigi.altervista.org/adv/unsecure-adv.txt
  [ 2 ] CAN-2004-0608
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0608

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

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

    http://security.gentoo.org/glsa/glsa-200407-14.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 2004 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/1.0

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