[ GLSA 200511-04 ] ClamAV: Multiple vulnerabilities

From: Sune Kloppenborg Jeppesen (jaervosz_at_gentoo.org)
Date: 11/06/05

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    To: gentoo-announce@gentoo.org
Date: Sun, 6 Nov 2005 17:08:48 +0100

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    Gentoo Linux Security Advisory GLSA 200511-04
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                                                http://security.gentoo.org/
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      Severity: High
         Title: ClamAV: Multiple vulnerabilities
          Date: November 06, 2005
          Bugs: #109213
            ID: 200511-04

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    Synopsis
    ========

    ClamAV has many security flaws which make it vulnerable to remote
    execution of arbitrary code and a Denial of Service.

    Background
    ==========

    ClamAV is a GPL anti-virus toolkit, designed for integration with mail
    servers to perform attachment scanning. ClamAV 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 < 0.87.1 >= 0.87.1

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

    ClamAV has multiple security flaws: a boundary check was performed
    incorrectly in petite.c, a buffer size calculation in unfsg_133 was
    incorrect in fsg.c, a possible infinite loop was fixed in tnef.c and a
    possible infinite loop in cabd_find was fixed in cabd.c . In addition
    to this, Marcin Owsiany reported that a corrupted DOC file causes a
    segmentation fault in ClamAV.

    Impact
    ======

    By sending a malicious attachment to a mail server that is hooked with
    ClamAV, a remote attacker could cause a Denial of Service or the
    execution of arbitrary code.

    Workaround
    ==========

    There is no known workaround at this time.

    Resolution
    ==========

    All ClamAV users should upgrade to the latest version:

        # emerge --sync
        # emerge --ask --oneshot --verbose ">=app-antivirus/clamav-0.87.1"

    References
    ==========

      [ 1 ] CAN-2005-3239
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3239
      [ 2 ] CAN-2005-3303
            http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3303
      [ 3 ] ClamAV release notes
            http://sourceforge.net/project/shownotes.php?release_id=368319
      [ 4 ] Zero Day Initiative advisory
            http://www.zerodayinitiative.com/advisories/ZDI-05-002.html

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

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

      http://security.gentoo.org/glsa/glsa-200511-04.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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