[ GLSA 200407-14 ] Unreal Tournament 2003/2004: Buffer overflow in 'secure' queries

[Thierry Carrez <koon () gentoo org>]

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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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