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</p><div class="table"><a id="idp7650352"></a><p class="title"><b>Table 1.4. PowerDNS Security Advisory</b></p><div class="table-contents"><table summary="PowerDNS Security Advisory" border="1"><colgroup><col /><col /></colgroup><tbody><tr><td>
CVE
</td><td>
CVE-2008-3337
</td></tr><tr><td>
Date
</td><td>
6th of August 2008
</td></tr><tr><td>
Affects
</td><td>
PowerDNS Authoritative Server 2.9.21 and earlier
</td></tr><tr><td>
Not affected
</td><td>
No versions of the PowerDNS Recursor ('pdns_recursor') are affected.
</td></tr><tr><td>
Severity
</td><td>
Moderate
</td></tr><tr><td>
Impact
</td><td>
Data manipulation; client redirection
</td></tr><tr><td>
Exploit
</td><td>
Domains with servers that drop certain queries can be spoofed using simpler measures than would
usually be required
</td></tr><tr><td>
Solution
</td><td>
Upgrade to PowerDNS Authoritative Server 2.9.21.1, or apply <a class="ulink" href="http://wiki.powerdns.com/projects/trac/changeset/1239" target="_top">commit 1239</a>.
</td></tr><tr><td>
Workaround
</td><td>
None known.
</td></tr></tbody></table></div></div><p><br class="table-break" />
</p><p>
Brian J. Dowling of Simplicity Communications has discovered a security implication of
the previous PowerDNS behaviour to drop queries it considers malformed. We are grateful that
Brian notified us quickly about this problem.
</p><p>
The implication is that while the PowerDNS Authoritative server itself does not face a security risk because
of dropping these malformed queries, other resolving nameservers run a higher risk of accepting spoofed
answers for domains being hosted by PowerDNS Authoritative Servers before 2.9.21.1.
</p><p>
While the dropping of queries does not aid sophisticated spoofing attempts, it does facilitate simpler attacks.
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