Brian Dowling discovered that the PowerDNS authoritative name server
does not respond to DNS queries which contain certain characters,
increasing the risk of successful DNS spoofing (CVE-2008-3337). This
update changes PowerDNS to respond with SERVFAIL responses instead.
For the stable distribution (etch), this problem has been fixed in version
2.9.20-8+etch1.
For the unstable distribution (sid), this problem has been fixed in
version 2.9.21.1-1.
We recommend that you upgrade your pdns package.