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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200812-19">
<title>PowerDNS: Multiple vulnerabilities</title>
<synopsis>
Two vulnerabilities have been discovered in PowerDNS, possibly leading to a
Denial of Service and easing cache poisoning attacks.
</synopsis>
<product type="ebuild">pdns</product>
<announced>December 19, 2008</announced>
<revised>December 19, 2008: 01</revised>
<bug>234032</bug>
<bug>247079</bug>
<access>remote</access>
<affected>
<package name="net-dns/pdns" auto="yes" arch="*">
<unaffected range="ge">2.9.21.2</unaffected>
<vulnerable range="lt">2.9.21.2</vulnerable>
</package>
</affected>
<background>
<p>
The PowerDNS Nameserver is an authoritative-only nameserver which uses
a flexible backend architecture.
</p>
</background>
<description>
<p>
Daniel Drown reported an error when receiving a HINFO CH query
(CVE-2008-5277). Brian J. Dowling of Simplicity Communications
discovered a previously unknown security implication of the PowerDNS
behavior to not respond to certain queries it considers malformed
(CVE-2008-3337).
</p>
</description>
<impact type="normal">
<p>
A remote attacker could send specially crafted queries to cause a
Denial of Service. The second vulnerability in itself does not pose a
security risk to PowerDNS Nameserver. However, not answering a query
for an invalid DNS record within a valid domain allows for a larger
spoofing window on third-party nameservers for domains being hosted by
PowerDNS Nameserver itself.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time.
</p>
</workaround>
<resolution>
<p>
All PowerDNS users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=net-dns/pdns-2.9.21.2&quot;</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3337">CVE-2008-3337</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5277">CVE-2008-5277</uri>
</references>
<metadata tag="requester" timestamp="Sat, 06 Sep 2008 21:05:59 +0000">
p-y
</metadata>
<metadata tag="bugReady" timestamp="Sat, 06 Sep 2008 21:06:12 +0000">
p-y
</metadata>
<metadata tag="submitter" timestamp="Wed, 10 Sep 2008 17:38:51 +0000">
jaervosz
</metadata>
</glsa>