glsa-200705-14.xml


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

<glsa id="200705-14">
  <title>XScreenSaver: Privilege escalation</title>
  <synopsis>
    XScreenSaver allows local users to bypass authentication under certain
    configurations.
  </synopsis>
  <product type="ebuild">xscreensaver</product>
  <announced>May 13, 2007</announced>
  <revised>May 13, 2007: 01</revised>
  <bug>176584</bug>
  <access>local</access>
  <affected>
    <package name="x11-misc/xscreensaver" auto="yes" arch="*">
      <unaffected range="ge">5.02</unaffected>
      <vulnerable range="lt">5.02</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    XScreenSaver is a widely used screen saver collection shipped on
    systems running the X11 Window System.
    </p>
  </background>
  <description>
    <p>
    XScreenSaver incorrectly handles the results of the getpwuid() function
    in drivers/lock.c when using directory servers during a network outage.
    </p>
  </description>
  <impact type="normal">
    <p>
    A local user can crash 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 XScreenSaver users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose &quot;&gt;=x11-misc/xscreensaver-5.02&quot;</code>
  </resolution>
  <references>
    <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1859">CVE-2007-1859</uri>
  </references>
  <metadata tag="requester" timestamp="Tue, 08 May 2007 10:52:36 +0000">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="Tue, 08 May 2007 15:43:15 +0000">
    falco
  </metadata>
  <metadata tag="bugReady" timestamp="Sun, 13 May 2007 21:32:41 +0000">
    falco
  </metadata>
</glsa>