This indicates an attack attempt to exploit a Denial of Service vulnerability in ISC BIND.
The vulnerability is due to an error when vulnerable module handles a crafted DNS query. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.
ISC BIND 9.10.0 through 9.10.3-P2
ISC BIND 9.3.0 through 9.8.8
ISC BIND 9.9.0 through 9.9.8-P2
ISC BIND 9.9.3-S1 through 9.9.8-S3
Denial of Service: Remote attackers can crash vulnerable systems or services
Apply the most recent upgrade or patch from the vendor.