glsa-200712-20.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">

<glsa id="200712-20">
  <title>ClamAV: Multiple vulnerabilities</title>
  <synopsis>
    Multiple vulnerabilities have been discovered in ClamAV allowing remote
    execution of arbitrary code and Denial of Service attacks.
  </synopsis>
  <product type="ebuild">clamav</product>
  <announced>December 29, 2007</announced>
  <revised>December 29, 2007: 01</revised>
  <bug>202762</bug>
  <access>remote</access>
  <affected>
    <package name="app-antivirus/clamav" auto="yes" arch="*">
      <unaffected range="ge">0.91.2-r1</unaffected>
      <vulnerable range="lt">0.91.2-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Clam AntiVirus is a free anti-virus toolkit for UNIX, designed
    especially for e-mail scanning on mail gateways.
    </p>
  </background>
  <description>
    <p>
    iDefense reported an integer overflow vulnerability in the cli_scanpe()
    function when parsing Portable Executable (PE) files packed in the MEW
    format, that could be exploited to cause a heap-based buffer overflow
    (CVE-2007-6335). Toeroek Edwin reported an off-by-one error when
    decompressing MS-ZIP compressed CAB files (CVE-2007-6336). An
    unspecified vulnerability related to the bzip2 decompression algorithm
    has also been discovered (CVE-2007-6337).
    </p>
  </description>
  <impact type="high">
    <p>
    A remote attacker could entice a user or automated system to scan a
    specially crafted file, possibly leading to the execution of arbitrary
    code with the privileges of the user running ClamAV (either a system
    user or the "clamav" user if clamd is compromised).
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All ClamAV users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=app-antivirus/clamav-0.91.2-r1&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6335">CVE-2007-6335</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6336">CVE-2007-6336</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6337">CVE-2007-6337</uri>
  </references>
  <metadata tag="submitter" timestamp="Thu, 27 Dec 2007 00:36:49 +0000">
    rbu
  </metadata>
  <metadata tag="bugReady" timestamp="Fri, 28 Dec 2007 22:56:45 +0000">
    p-y
  </metadata>
</glsa>