[ GLSA 200409-19 ] Heimdal: ftpd root escalation

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 09/16/04

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    To: gentoo-announce@gentoo.org
Date: Thu, 16 Sep 2004 10:11:40 +0200

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    Gentoo Linux Security Advisory GLSA 200409-19
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                                                http://security.gentoo.org/
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      Severity: High
         Title: Heimdal: ftpd root escalation
          Date: September 16, 2004
          Bugs: #61412
            ID: 200409-19

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    Synopsis
    ========

    Several bugs exist in the Heimdal ftp daemon which could allow a remote
    attacker to gain root privileges.

    Background
    ==========

    Heimdal is an implementation of Kerberos 5.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 app-crypt/heimdal < 0.6.3 >= 0.6.3

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

    Przemyslaw Frasunek discovered several flaws in lukemftpd, which also
    apply to Heimdal ftpd's out-of-band signal handling code.

    Additionally, a potential vulnerability that could lead to Denial of
    Service by the Key Distribution Center (KDC) has been fixed in this
    version.

    Impact
    ======

    A remote attacker could be able to run arbitrary code with escalated
    privileges, which can result in a total compromise of the server.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All Heimdal users should upgrade to the latest version:

        # emerge sync

        # emerge -pv ">=app-crypt/heimdal-0.6.3"
        # emerge ">=app-crypt/heimdal-0.6.3"

    References
    ==========

      [ 1 ] Heimdal advisory
            http://www.pdc.kth.se/heimdal/advisory/2004-09-13/
      [ 2 ] Advisory by Przemyslaw Frasunek
            http://www.frasunek.com/lukemftpd.txt
      [ 3 ] CAN-2004-0794
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0794

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

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

      http://security.gentoo.org/glsa/glsa-200409-19.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

  • Next message: Ryan Sumida: "RE: [Full-Disclosure] Good Network Access Control solution using"

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