glsa-200510-02.xml


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

<glsa id="200510-02">
  <title>Berkeley MPEG Tools: Multiple insecure temporary files</title>
  <synopsis>
    The Berkeley MPEG Tools use temporary files in various insecure ways,
    potentially allowing a local user to overwrite arbitrary files.
  </synopsis>
  <product type="ebuild">MPEG Tools</product>
  <announced>October 03, 2005</announced>
  <revised>October 03, 2005: 01</revised>
  <bug>107344</bug>
  <access>local</access>
  <affected>
    <package name="media-video/mpeg-tools" auto="yes" arch="*">
      <unaffected range="ge">1.5b-r2</unaffected>
      <vulnerable range="lt">1.5b-r2</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    The Berkeley MPEG Tools are a collection of utilities for
    manipulating MPEG video technology, including an encoder (mpeg_encode)
    and various conversion utilities.
    </p>
  </background>
  <description>
    <p>
    Mike Frysinger of the Gentoo Security Team discovered that
    mpeg_encode and the conversion utilities were creating temporary files
    with predictable or fixed filenames. The 'test' make target of the MPEG
    Tools also relied on several temporary files created insecurely.
    </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 the utilities are executed (or 'make test' is run), this would
    result in the file being overwritten with the rights of the user
    running the command.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All Berkeley MPEG Tools users should upgrade to the latest
    version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=media-video/mpeg-tools-1.5b-r2&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-3115">CAN-2005-3115</uri>
  </references>
  <metadata tag="requester" timestamp="Fri, 30 Sep 2005 07:41:47 +0000">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="Sat, 01 Oct 2005 09:55:55 +0000">
    koon
  </metadata>
  <metadata tag="submitter" timestamp="Sun, 02 Oct 2005 13:13:54 +0000">
    koon
  </metadata>
</glsa>