metadata/glsa/glsa-201202-03.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201202-03">
  <title>MaraDNS: Denial of Service</title>
  <synopsis>A hash collision vulnerability in MaraDNS allows remote attackers
    to cause a Denial of Service condition.
  </synopsis>
  <product type="ebuild">maradns</product>
  <announced>February 22, 2012</announced>
  <revised>February 22, 2012: 1</revised>
  <bug>397431</bug>
  <access>remote</access>
  <affected>
    <package name="net-dns/maradns" auto="yes" arch="*">
      <unaffected range="ge">1.4.09</unaffected>
      <vulnerable range="lt">1.4.09</vulnerable>
    </package>
  </affected>
  <background>
    <p>MaraDNS is a proxy DNS server with permanent caching.</p>
  </background>
  <description>
    <p>MaraDNS does not properly randomize hash functions to protect against
      hash collision attacks.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could send many specially crafted DNS recursive
      queries, possibly resulting in a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All MaraDNS users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-dns/maradns-1.4.09"
    </code>
    
  </resolution>
  <references>
    <uri link="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0024">CVE-2012-0024</uri>
  </references>
  <metadata timestamp="Mon, 20 Feb 2012 21:36:13 +0000" tag="requester">ackle</metadata>
  <metadata timestamp="Wed, 22 Feb 2012 19:45:52 +0000" tag="submitter">ackle</metadata>
</glsa>