Intrusion Prevention

ISC.BIND.CName.Record.Incorrect.Order.DoS

Description

This indicates an attack attempt to exploit a Denial of Service vulnerability in ISC BIND.
The vulnerability is due to an error when a vulnerable module handles a query response authority section without covering RRSIG Record. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.

Affected Products

ISC BIND 9.9.9-P6
ISC BIND 9.9.10b1->9.9.10rc1
ISC BIND 9.10.4-P6
ISC BIND 9.10.5b1->9.10.5rc1
ISC BIND 9.11.0-P3
ISC BIND 9.11.1b1->9.11.1rc1
ISC BIND 9.9.9-S8

Impact

Denial of Service: Remote attackers can crash vulnerable systems or services

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://kb.isc.org/article/AA-01466

CVE References

CVE-2017-3137