glsa-201009-07.xml


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

<glsa id="201009-07">
  <title>libxml2: Denial of Service</title>
  <synopsis>
    Multiple Denial of Services vulnerabilities were found in libxml2.
  </synopsis>
  <product type="ebuild">libxml2</product>
  <announced>September 21, 2010</announced>
  <revised>September 21, 2010: 01</revised>
  <bug>280617</bug>
  <access>remote</access>
  <affected>
    <package name="dev-libs/libxml2" auto="yes" arch="*">
      <unaffected range="ge">2.7.3-r2</unaffected>
      <vulnerable range="lt">2.7.3-r2</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    libxml2 is a library to manipulate XML files.
    </p>
  </background>
  <description>
    <p>
    The following vulnerabilities were reported after a test with the
    Codenomicon XML fuzzing framework:
    </p>
    <ul>
    <li>
    Two use-after-free vulnerabilities are possible when parsing a XML file
    with Notation or Enumeration attribute types (CVE-2009-2416).
    </li>
    <li>
    A stack consumption vulnerability can be triggered via a large depth of
    element declarations in a DTD, related to a function recursion
    (CVE-2009-2414).
    </li>
    </ul>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could entice a user or automated system to open a
    specially crafted XML document with an application using libxml2
    resulting in a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All libxml2 users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=dev-libs/libxml2-2.7.3-r2&quot;</code>
    <p>
    NOTE: This is a legacy GLSA. Updates for all affected architectures are
    available since August 30, 2009. It is likely that your system is
    already no longer affected by this issue.
    </p>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2414">CVE-2009-2414</uri>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2416">CVE-2009-2416</uri>
  </references>
  <metadata tag="requester" timestamp="Mon, 31 Aug 2009 02:15:14 +0000">
    a3li
  </metadata>
  <metadata tag="submitter" timestamp="Sun, 11 Apr 2010 13:13:48 +0000">
    craig
  </metadata>
  <metadata tag="bugReady" timestamp="Sun, 30 May 2010 18:03:32 +0000">
    vorlon
  </metadata>
</glsa>