glsa-201202-04.xml


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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201202-04">
  <title>PowerDNS: Denial of Service</title>
  <synopsis>A vulnerability in PowerDNS could allow a remote attacker to create
    a Denial of Service condition.
  </synopsis>
  <product type="ebuild">pdns</product>
  <announced>2012-02-22</announced>
  <revised>2012-02-22: 1</revised>
  <bug>398403</bug>
  <access>remote</access>
  <affected>
    <package name="net-dns/pdns" auto="yes" arch="*">
      <unaffected range="ge">3.0.1</unaffected>
      <vulnerable range="lt">3.0.1</vulnerable>
    </package>
  </affected>
  <background>
    <p>The PowerDNS nameserver is an authoritative-only nameserver which uses a
      flexible backend architecture.
    </p>
  </background>
  <description>
    <p>A vulnerability has been found in PowerDNS which could cause a packet
      loop of DNS responses. 
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could send specially crafted DNS response packets,
      possibly resulting in a Denial of Service condition.
    </p>
  </impact>
  <workaround>
    <p>PowerDNS users can set "cache-ttl=0" in /etc/powerdns/pdns.conf and then
      restart the PowerDNS daemon:
    </p>
    
    <code>
      # /etc/init.d/pdns restart
    </code>
    
    <p>Please review the PowerDNS Security Advisory below for more workaround
      details.
    </p>
  </workaround>
  <resolution>
    <p>All PowerDNS users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-dns/pdns-3.0.1"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0206">CVE-2012-0206</uri>
    <uri link="https://doc.powerdns.com/powerdns-advisory-2012-01.html">PowerDNS
      Security Advisory 2012-01
    </uri>
  </references>
  <metadata timestamp="2012-01-27T14:47:52Z" tag="requester">ackle</metadata>
  <metadata timestamp="2012-02-22T19:50:34Z" tag="submitter">ackle</metadata>
</glsa>