<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201810-09">
  <title>X.Org X Server: Privilege escalation</title>
  <synopsis>A vulnerability in X.Org X Server allows local users to escalate
    privileges.
  </synopsis>
  <product type="ebuild">xorg x server</product>
  <announced>2018-10-30</announced>
  <revised count="1">2018-10-30</revised>
  <bug>669588</bug>
  <access>local</access>
  <affected>
    <package name="x11-base/xorg-server" auto="yes" arch="*">
      <unaffected range="ge">1.20.3</unaffected>
      <vulnerable range="lt">1.20.3</vulnerable>
    </package>
  </affected>
  <background>
    <p>The X Window System is a graphical windowing system based on a
      client/server model.
    </p>
  </background>
  <description>
    <p>An incorrect permission check for -modulepath and -logfile options when
      starting Xorg. X server allows unprivileged users with the ability to log
      in to the system via physical console to escalate their privileges and
      run arbitrary code under root privileges.
    </p>
  </description>
  <impact type="high">
    <p>A local attacker can escalate privileges to root by passing crafted
      parameters to the X.org X server.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All X.Org X Server users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=x11-base/xorg-server-1.20.3"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2018-14665">CVE-2018-14665</uri>
  </references>
  <metadata tag="requester" timestamp="2018-10-30T15:53:55Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2018-10-30T20:42:13Z">whissi</metadata>
</glsa>
