glsa-200804-12.xml


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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200804-12">
  <title>gnome-screensaver: Privilege escalation</title>
  <synopsis>
    gnome-screensaver allows local users to bypass authentication under certain
    configurations.
  </synopsis>
  <product type="ebuild">gnome-screensaver</product>
  <announced>2008-04-11</announced>
  <revised>2008-04-11: 01</revised>
  <bug>213940</bug>
  <access>local</access>
  <affected>
    <package name="gnome-extra/gnome-screensaver" auto="yes" arch="*">
      <unaffected range="ge">2.20.0-r3</unaffected>
      <vulnerable range="lt">2.20.0-r3</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    gnome-screensaver is a screensaver, designed to integrate with the
    Gnome desktop, that can replace xscreensaver.
    </p>
  </background>
  <description>
    <p>
    gnome-screensaver incorrectly handles the results of the getpwuid()
    function in the file src/setuid.c when using directory servers (like
    NIS) during a network outage, a similar issue to GLSA 200705-14.
    </p>
  </description>
  <impact type="normal">
    <p>
    A local user can crash gnome-xscreensaver by preventing network
    connectivity if the system uses a remote directory service for
    credentials such as NIS or LDAP, which will unlock the screen.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All gnome-screensaver users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=gnome-extra/gnome-screensaver-2.20.0-r3"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0887">CVE-2008-0887</uri>
    <uri link="https://www.gentoo.org/security/en/glsa/glsa-200705-14.xml">GLSA 200705-14</uri>
  </references>
  <metadata tag="submitter" timestamp="2008-04-09T17:28:36Z">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="2008-04-10T13:16:15Z">
    vorlon
  </metadata>
</glsa>