[ GLSA 200506-23 ] Clam AntiVirus: Denial of Service vulnerability

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 06/27/05

  • Next message: David A. Wheeler: "Re: Phishing - feature or flaw" 
    To: gentoo-announce@gentoo.org
Date: Mon, 27 Jun 2005 06:17:23 +0200

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
    Gentoo Linux Security Advisory GLSA 200506-23
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                                http://security.gentoo.org/
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

      Severity: Normal
         Title: Clam AntiVirus: Denial of Service vulnerability
          Date: June 27, 2005
          Bugs: #96960
            ID: 200506-23

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Synopsis
    ========

    Clam AntiVirus is vulnerable to a Denial of Service attack when
    processing certain Quantum archives.

    Background
    ==========

    Clam AntiVirus is a GPL anti-virus toolkit, designed for integration
    with mail servers to perform attachment scanning. Clam AntiVirus also
    provides a command line scanner and a tool for fetching updates of the
    virus database.

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

        -------------------------------------------------------------------
         Package / Vulnerable / Unaffected
        -------------------------------------------------------------------
      1 app-antivirus/clamav < 0.86.1 >= 0.86.1

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

    Andrew Toller and Stefan Kanthak discovered that a flaw in libmspack's
    Quantum archive decompressor renders Clam AntiVirus vulnerable to a
    Denial of Service attack.

    Impact
    ======

    A remote attacker could exploit this vulnerability to cause a Denial of
    Service by sending a specially crafted Quantum archive to the server.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All Clam AntiVirus users should upgrade to the latest available
    version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.86.1"

    References
    ==========

      [ 1 ] Clam AntiVirus Release Notes
            http://sourceforge.net/project/shownotes.php?release_id=337279

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

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

      http://security.gentoo.org/glsa/glsa-200506-23.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 2005 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/2.0

  • Next message: David A. Wheeler: "Re: Phishing - feature or flaw"

    Relevant Pages