<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202012-19">
  <title>PowerDNS Recursor: Denial of service</title>
  <synopsis>A vulnerability in PowerDNS Recursor could lead to a Denial of
    Service condition.
  </synopsis>
  <product type="ebuild">pdns-recursor</product>
  <announced>2020-12-23</announced>
  <revised count="1">2020-12-23</revised>
  <bug>746923</bug>
  <access>remote</access>
  <affected>
    <package name="net-dns/pdns-recursor" auto="yes" arch="*">
      <unaffected range="ge">4.3.5</unaffected>
      <vulnerable range="lt">4.3.5</vulnerable>
    </package>
  </affected>
  <background>
    <p>PowerDNS Recursor is a high-end, high-performance resolving name server.</p>
  </background>
  <description>
    <p>It was discovered that it was possible to update the DNSSEC validation
      state to a bogus state for a cached record via DNS ANY query.
    </p>
  </description>
  <impact type="low">
    <p>A remote attacker could send specially crafted DNS queries to deny
      DNSSEC validation.
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All PowerDNS Recursor users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-dns/pdns-recursor-4.3.5"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-25829">CVE-2020-25829</uri>
    <uri link="https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html">
      PowerDNS Security Advisory 2020-07
    </uri>
  </references>
  <metadata tag="requester" timestamp="2020-12-23T17:00:31Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2020-12-23T19:54:43Z">whissi</metadata>
</glsa>
