glsa-200706-05.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200706-05">
  <title>ClamAV: Multiple Denials of Service</title>
  <synopsis>
    ClamAV contains several vulnerabilities leading to a Denial of Service.
  </synopsis>
  <product type="ebuild">clamav</product>
  <announced>2007-06-15</announced>
  <revised count="01">2007-06-15</revised>
  <bug>178082</bug>
  <access>remote, local</access>
  <affected>
    <package name="app-antivirus/clamav" auto="yes" arch="*">
      <unaffected range="ge">0.90.3</unaffected>
      <vulnerable range="lt">0.90.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    ClamAV is a GPL virus scanner.
    </p>
  </background>
  <description>
    <p>
    Several vulnerabilities were discovered in ClamAV by various
    researchers:
    </p>
    <ul><li>Victor Stinner (INL) discovered that the OLE2
    parser may enter in an infinite loop (CVE-2007-2650).</li>
    <li>A
    boundary error was also reported by an anonymous researcher in the file
    unsp.c, which might lead to a buffer overflow (CVE-2007-3023).</li>
    <li>The file unrar.c contains a heap-based buffer overflow via a
    modified vm_codesize value from a RAR file (CVE-2007-3123).</li>
    <li>The RAR parsing engine can be bypassed via a RAR file with a header
    flag value of 10 (CVE-2007-3122).</li>
    <li>The cli_gentempstream()
    function from clamdscan creates temporary files with insecure
    permissions (CVE-2007-3024).</li>
    </ul>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could send a specially crafted file to the scanner,
    possibly triggering one of the vulnerabilities. The two buffer
    overflows are reported to only cause Denial of Service. This would lead
    to a Denial of Service by CPU consumption or a crash of the scanner.
    The insecure temporary file creation vulnerability could be used by a
    local user to access sensitive data.
    </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 "&gt;=app-antivirus/clamav-0.90.3"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2650">CVE-2007-2650</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3023">CVE-2007-3023</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3024">CVE-2007-3024</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3122">CVE-2007-3122</uri>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3123">CVE-2007-3123</uri>
  </references>
  <metadata tag="requester" timestamp="2007-06-08T06:17:07Z">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="2007-06-10T18:13:18Z">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="2007-06-10T18:15:09Z">
    falco
  </metadata>
</glsa>