[ GLSA 200405-23 ] Heimdal: Kerberos 4 buffer overflow in kadmin

From: Kurt Lieber (klieber_at_gentoo.org)
Date: 05/27/04

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    Date: Thu, 27 May 2004 08:26:28 -0400
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    Gentoo Linux Security Advisory GLSA 200405-23
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                                                http://security.gentoo.org/
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      Severity: High
         Title: Heimdal: Kerberos 4 buffer overflow in kadmin
          Date: May 27, 2004
          Bugs: #50208
            ID: 200405-23

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    Synopsis
    ========

    A possible buffer overflow in the Kerberos 4 component of Heimdal has
    been discovered.

    Background
    ==========

    Heimdal is a free implementation of Kerberos.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 app-crypt/heimdal < 0.6.2 >= 0.6.2

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

    A buffer overflow was discovered in kadmind, a server for
    administrative access to the Kerberos database.

    Impact
    ======

    By sending a specially formatted message to kadmind, a remote attacker
    may be able to crash kadmind causing a denial of service, or execute
    arbitrary code with the permissions of the kadmind process.

    Workaround
    ==========

    For a temporary workaround, providing you do not require Kerberos 4
    support, you may turn off Kerberos 4 kadmin by running kadmind with the
    --no-kerberos4 option.

    Resolution
    ==========

    All Heimdal users should upgrade to the latest stable version:

        # emerge sync

        # emerge -pv ">=app-crypt/heimdal-0.6.2"
        # emerge ">=app-crypt/heimdal-0.6.2"

    References
    ==========

      [ 1 ] Heimdal 0.6.2 Release Notice
            http://www.pdc.kth.se/heimdal/advisory/2004-05-06/
      [ 2 ] CAN-2004-0434
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0434

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

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

         http://security.gentoo.org/glsa/glsa-200405-23.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 Technologies, 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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