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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200909-02">
  <title>libvorbis: User-assisted execution of arbitrary code</title>
  <synopsis>
    A processing error in libvorbis might result in the execution of arbitrary
    code or a Denial of Service.
  </synopsis>
  <product type="ebuild">libvorbis</product>
  <announced>2009-09-07</announced>
  <revised count="01">2009-09-07</revised>
  <bug>280590</bug>
  <access>remote</access>
  <affected>
    <package name="media-libs/libvorbis" auto="yes" arch="*">
      <unaffected range="ge">1.2.3</unaffected>
      <vulnerable range="lt">1.2.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    libvorbis is the reference implementation of the Xiph.org Ogg Vorbis
    audio file format. It is used by many applications for playback of Ogg
    Vorbis files.
    </p>
  </background>
  <description>
    <p>
    Lucas Adamski reported that libvorbis does not correctly process file
    headers, related to static mode headers and encoding books.
    </p>
  </description>
  <impact type="normal">
    <p>
    A remote attacker could entice a user to play a specially crafted OGG
    Vorbis file using an application that uses libvorbis, possibly
    resulting in the execution of arbitrary code with the privileges of the
    user running the application, or a Denial of Service.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All libvorbis users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=media-libs/libvorbis-1.2.3"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2663">CVE-2009-2663</uri>
  </references>
  <metadata tag="requester" timestamp="2009-08-31T02:17:32Z">
    a3li
  </metadata>
  <metadata tag="submitter" timestamp="2009-08-31T02:42:12Z">
    a3li
  </metadata>
  <metadata tag="bugReady" timestamp="2009-08-31T03:38:56Z">
    a3li
  </metadata>
</glsa>