glsa-201201-15.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201201-15">
  <title>ktsuss: Privilege escalation</title>
  <synopsis>Two vulnerabilities have been found in ktsuss, allowing local
    attackers to gain escalated privileges.
  </synopsis>
  <product type="ebuild">ktsuss</product>
  <announced>January 27, 2012</announced>
  <revised>January 27, 2012: 1</revised>
  <bug>381115</bug>
  <access>local</access>
  <affected>
    <package name="x11-misc/ktsuss" auto="yes" arch="*">
      <vulnerable range="le">1.4</vulnerable>
    </package>
  </affected>
  <background>
    <p>ktsuss is a simple, graphical version of su written in C and GTK+. </p>
  </background>
  <description>
    <p>Two vulnerabilities have been found in ktuss:</p>
    
    <ul>
      <li>Under specific circumstances, ktsuss skips authentication and fails
        to change the effective UID back to the real UID (CVE-2011-2921).
      </li>
      <li>The GTK interface spawned by the ktsuss binary is run as root
        (CVE-2011-2922).
      </li>
    </ul>
  </description>
  <impact type="high">
    <p>A local attacker could gain escalated privileges and use the
      "GTK_MODULES" environment variable to possibly execute arbitrary code
      with root privileges. 
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>Gentoo discontinued support for ktsuss. We recommend that users unmerge
      ktsuss:
    </p>
    
    <code>
      # emerge --unmerge "x11-misc/ktsuss"
    </code>
  </resolution>
  <references>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2921">CVE-2011-2921</uri>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2922">CVE-2011-2922</uri>
  </references>
  <metadata timestamp="Thu, 27 Oct 2011 21:00:00 +0000" tag="requester">
    underling
  </metadata>
  <metadata timestamp="Fri, 27 Jan 2012 14:41:59 +0000" tag="submitter">ackle</metadata>
</glsa>