This indicates an attack attempt to exploit a Denial of Service vulnerability in ISC BIND.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted query that includes malformed rdata. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.
ISC BIND 9.7.0->9.7.7
ISC BIND 9.8.0->9.8.5-P1
ISC BIND 9.9.0->9.9.3-P1
ISC BIND 9.8.6b1 and 9.9.4b1
DNSco BIND 9.9.3-S1 and 9.9.4-S1b1
Denial of Service: Remote attackers can crash vulnerable systems.
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