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

From: Thierry Carrez (koon_at_gentoo.org)
Date: 07/19/04

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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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