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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200510-04">
  <title>Texinfo: Insecure temporary file creation</title>
  <synopsis>
    Texinfo is vulnerable to symlink attacks, potentially allowing a local user
    to overwrite arbitrary files.
  </synopsis>
  <product type="ebuild">Texinfo</product>
  <announced>2005-10-05</announced>
  <revised count="01">2005-10-05</revised>
  <bug>106105</bug>
  <access>local</access>
  <affected>
    <package name="sys-apps/texinfo" auto="yes" arch="*">
      <unaffected range="ge">4.8-r1</unaffected>
      <vulnerable range="lt">4.8-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Texinfo is the official documentation system created by the GNU
    project.
    </p>
  </background>
  <description>
    <p>
    Frank Lichtenheld has discovered that the "sort_offline()"
    function in texindex insecurely creates temporary files with
    predictable filenames.
    </p>
  </description>
  <impact type="normal">
    <p>
    A local attacker could create symbolic links in the temporary
    files directory, pointing to a valid file somewhere on the filesystem.
    When texindex is executed, this would result in the file being
    overwritten with the rights of the user running the application.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Texinfo users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=sys-apps/texinfo-4.8-r1"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-3011">CAN-2005-3011</uri>
  </references>
  <metadata tag="requester" timestamp="2005-09-29T14:54:06Z">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="2005-09-29T19:15:57Z">
    formula7
  </metadata>
  <metadata tag="bugReady" timestamp="2005-10-01T09:53:58Z">
    koon
  </metadata>
</glsa>