Upgrade to BIND 9.6.1-P3.
This version address the following vulnerabilities:
BIND 9 Cache Update from Additional Section
https://www.isc.org/advisories/CVE-2009-4022v6http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4022
A nameserver with DNSSEC validation enabled may incorrectly add
unauthenticated records to its cache that are received during the
resolution of a recursive client query
BIND 9 DNSSEC validation code could cause bogus NXDOMAIN responses
https://www.isc.org/advisories/CVE-2010-0097http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0097
There was an error in the DNSSEC NSEC/NSEC3 validation code that could
cause bogus NXDOMAIN responses (that is, NXDOMAIN responses for records
proven by NSEC or NSEC3 to exist) to be cached as if they had validated
correctly
These issues only affect systems with DNSSEC validation enabled.