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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>February 22, 2012</announced>
<revised>February 22, 2012: 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="http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0206">CVE-2012-0206</uri>
<uri link="http://doc.powerdns.com/powerdns-advisory-2012-01.html">PowerDNS
Security Advisory 2012-01
</uri>
</references>
<metadata timestamp="Fri, 27 Jan 2012 14:47:52 +0000" tag="requester">ackle</metadata>
<metadata timestamp="Wed, 22 Feb 2012 19:50:34 +0000" tag="submitter">ackle</metadata>
</glsa>