[ GLSA 200509-13 ] Clam AntiVirus: Multiple vulnerabilities

From: Thierry Carrez (koon_at_gentoo.org)
Date: 09/19/05

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    Date: Mon, 19 Sep 2005 10:35:55 +0200
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    Gentoo Linux Security Advisory GLSA 200509-13
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                                                http://security.gentoo.org/
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      Severity: High
         Title: Clam AntiVirus: Multiple vulnerabilities
          Date: September 19, 2005
          Bugs: #106279
            ID: 200509-13

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    Synopsis
    ========

    Clam AntiVirus is subject to vulnerabilities ranging from Denial of
    Service to execution of arbitrary code when handling compressed
    executables.

    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 < 0.87 >= 0.87

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

    Clam AntiVirus is vulnerable to a buffer overflow in "libclamav/upx.c"
    when processing malformed UPX-packed executables. It can also be sent
    into an infinite loop in "libclamav/fsg.c" when processing
    specially-crafted FSG-packed executables.

    Impact
    ======

    By sending a specially-crafted file an attacker could execute arbitrary
    code with the permissions of the user running Clam AntiVirus, or cause
    a Denial of Service.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All Clam AntiVirus users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.87"

    References
    ==========

      [ 1 ] CAN-2005-2919
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2919
      [ 2 ] CAN-2005-2920
            http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2920
      [ 3 ] Clam AntiVirus: Release Notes
            http://sourceforge.net/project/shownotes.php?release_id=356974

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

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

      http://security.gentoo.org/glsa/glsa-200509-13.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

    
    



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