Updated pdns packages fix security vulnerability

PowerDNS Authoritative Server accepts queries with a qname's length larger than 255 bytes CVE-2016-5426. PowerDNS Authoritative Server does not properly handle dot inside labels CVE-2016-5427. These issues allow a remote, unauthenticated attacker to cause an abnormal load on the PowerDNS backend ...

Code injection

PowerDNS aka pdns Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service memory exhaustion and secondary DNS server crash via a large 1 AXFR or 2 IXFR response...