glsa-200410-18.xml


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

<glsa id="200410-18">
  <title>Ghostscript: Insecure temporary file use in multiple scripts</title>
  <synopsis>
    Multiple scripts in the Ghostscript package are vulnerable to symlink
    attacks, potentially allowing a local user to overwrite arbitrary files
    with the rights of the user running the script.
  </synopsis>
  <product type="ebuild">Ghostscript</product>
  <announced>October 20, 2004</announced>
  <revised>December 30, 2007: 02</revised>
  <bug>66357</bug>
  <access>local</access>
  <affected>
    <package name="app-text/ghostscript-esp" auto="yes" arch="*">
      <unaffected range="ge">7.07.1-r7</unaffected>
      <unaffected range="rge">7.05.6-r2</unaffected>
      <vulnerable range="lt">7.07.1-r7</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    Ghostscript is a software package providing an interpreter for the
    PostScript language and the PDF file format. It also provides output
    drivers for various file formats and printers.
    </p>
  </background>
  <description>
    <p>
    The pj-gs.sh, ps2epsi, pv.sh and sysvlp.sh scripts create temporary files
    in world-writeable directories with predictable names.
    </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 an
    affected script is called, this would result in the file to be overwritten
    with the rights of the user running the script, which could be the root
    user.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    Ghostscript users on all architectures except PPC should upgrade to the
    latest version:
    </p>
    <code>
    # emerge sync

    # emerge -pv ">=app-text/ghostscript-esp-7.07.1-r7"
    # emerge ">=app-text/ghostscript-esp-7.07.1-r7"</code>
    <p>
    Ghostscript users on the PPC architecture should upgrade to the latest
    stable version on their architecture:
    </p>
    <code>
    # emerge sync

    # emerge -pv ">=app-text/ghostscript-esp-7.05.6-r2"
    # emerge ">=app-text/ghostscript-esp-7.05.6-r2"</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0967">CAN-2004-0967</uri>
  </references>
  <metadata tag="submitter" timestamp="Tue, 19 Oct 2004 12:27:11 +0000">
    koon
  </metadata>
  <metadata tag="bugReady" timestamp="Tue, 19 Oct 2004 12:27:18 +0000">
    koon
  </metadata>
</glsa>