glsa-201401-23.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="201401-23">
  <title>sudo: Privilege escalation</title>
  <synopsis>Multiple vulnerabilities have been found in sudo which could result
    in privilege escalation.
  </synopsis>
  <product type="ebuild">sudo</product>
  <announced>January 21, 2014</announced>
  <revised>January 21, 2014: 1</revised>
  <bug>459722</bug>
  <access>local</access>
  <affected>
    <package name="app-admin/sudo" auto="yes" arch="*">
      <unaffected range="ge">1.8.6_p7</unaffected>
      <vulnerable range="lt">1.8.6_p7</vulnerable>
    </package>
  </affected>
  <background>
    <p>sudo allows a system administrator to give users the ability to run
      commands as other users. Access to commands may also be granted on a
      range to hosts.
    </p>
  </background>
  <description>
    <p>Multiple vulnerabilities have been found in sudo:</p>
    
    <ul>
      <li>sudo does not correctly validate the controlling terminal on a system
        without /proc or when the tty_tickets option is enabled.
      </li>
      <li>sudo does not properly handle the clock when it is set to the epoch.</li>
    </ul>
  </description>
  <impact type="high">
    <p>A local attacker with sudo privileges could connect to the stdin,
      stdout, and stderr of the terminal of a user who has authenticated with
      sudo, allowing the attacker to hijack the authorization of the other
      user. Additionally, a local or physically proximate attacker could set
      the system clock to the epoch, bypassing time restrictions on sudo
      authentication.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All sudo users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-admin/sudo-1.8.6_p7"
    </code>
    
  </resolution>
  <references>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1775">CVE-2013-1775</uri>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-1776">CVE-2013-1776</uri>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2776">CVE-2013-2776</uri>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-2777">CVE-2013-2777</uri>
  </references>
  <metadata tag="requester" timestamp="Fri, 03 Jan 2014 14:24:36 +0000">ackle</metadata>
  <metadata tag="submitter" timestamp="Tue, 21 Jan 2014 20:25:34 +0000">
    creffett
  </metadata>
</glsa>