Synopsis
The remote name server is affected by a denial of service vulnerability.
Description
ISC BIND versions 9.9.x prior or equal to 9.10.8-P1, 9.11.x prior to 9.11.6-P1, 9.12.x prior to 9.12.4-P1, 9.13.0 prior or equal to 9.13.7, 9.14.0, and BIND 9 Supported Preview Edition versions 9.9.3-S1 prior or equal to to 9.11.5-S3, and 9.11.5-S5 are affected by a DoS vulnerability due to a flaw in the feature to limit the number of simultaneous TCP connections. An unauthenticated, remote attacker can exploit this issue, to cause the application to stop responding.
Solution
Upgrade to ISC BIND version 9.11.6-P1, 9.12.4-P1, 9.14.1, 9.11.5-S6, 9.11.6-S1 or later.