Technical Information

Brief overview of the risk:
The vulnerability could allow denial of service if a remote unauthenticated attacker sends a specially crafted DNS query to the target DNS server.
Detailed Information on the risk:

A denial of service vulnerability exists in the way that the DNS server improperly handles objects in memory when looking up the resource record of a domain. An attacker that successfully exploited this vulnerability could cause the DNS server on the target system to stop responding and automatically restart.

Further information on this exploit is available at : MS12-017