pdns - security update

Toshifumi Sakaguchi discovered that the patch applied to pdns, an
authoritative DNS server, fixing

CVE-2015-1868, was insufficient in
some cases, allowing remote attackers to cause a denial of service
(service-affecting CPU spikes and in some cases a crash).

For the stable distribution (jessie), this problem has been fixed in
version 3.4.1-4+deb8u2.

For the testing distribution (stretch), this problem has been fixed
in version 3.4.5-1.

For the unstable distribution (sid), this problem has been fixed in
version 3.4.5-1.

We recommend that you upgrade your pdns packages.