glsa-201202-05.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201202-05">
  <title>Heimdal: Arbitrary code execution</title>
  <synopsis>A boundary error in Heimdal could result in execution of arbitrary
    code.
  </synopsis>
  <product type="ebuild">heimdal</product>
  <announced>February 22, 2012</announced>
  <revised>February 22, 2012: 1</revised>
  <bug>396105</bug>
  <access>remote</access>
  <affected>
    <package name="app-crypt/heimdal" auto="yes" arch="*">
      <unaffected range="ge">1.5.1-r1</unaffected>
      <vulnerable range="lt">1.5.1-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>Heimdal is a free implementation of Kerberos 5.</p>
  </background>
  <description>
    <p>A boundary error in the "encrypt_keyid()" function in
      appl/telnet/libtelnet/encrypt.c of the telnet daemon and client could
      cause a buffer overflow. 
    </p>
  </description>
  <impact type="high">
    <p>An unauthenticated remote attacker may be able to execute arbitrary code
      with the privileges of the user running the telnet daemon or client, or
      cause Denial of Service.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Heimdal users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-crypt/heimdal-1.5.1-r1"
    </code>
    
  </resolution>
  <references>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4862">CVE-2011-4862</uri>
  </references>
  <metadata timestamp="Tue, 17 Jan 2012 19:55:41 +0000" tag="requester">ago</metadata>
  <metadata timestamp="Wed, 22 Feb 2012 19:56:26 +0000" tag="submitter">ackle</metadata>
</glsa>