ISC.BIND.MDC.Control.Channel.Assertion.Failure.DoS

Description

This indicates an attack attempt to exploit a Denial of Service vulnerability in ISC BIND.
The vulnerability is due to a fault in the DNS protocol when handling a null command string sent to rndc control channel interface. A remote attacker may be able to exploit this to cause a denial of service condition on the affected system.

Affected Products

ISC BIND 9.8.0 -> 9.8.8-P1
ISC BIND 9.9.0 -> 9.9.9-P6
ISC BIND 9.10.0 -> 9.10.4-P6
ISC BIND 9.9.3-S1 -> 9.9.9-S8
ISC BIND 9.9.9->9.9.9-P7
ISC BIND 9.9.10b1->9.9.10rc2
ISC BIND 9.10.4->9.10.4-P7
ISC BIND 9.10.5b1->9.10.5rc2
ISC BIND 9.11.0->9.11.0-P4
ISC BIND 9.11.1b1->9.11.1rc2
ISC BIND 9.9.9-S1->9.9.9-S9

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-01471

References