BIND 9 resolver can crash when stale cache and stale answers are enabled, option stale-answer-client-timeout
is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.
{ "availability": "No subscription required", "binaries": [ { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "bind9" }, { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "bind9-dev" }, { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "bind9-dnsutils" }, { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "bind9-host" }, { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "bind9-libs" }, { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "bind9-utils" }, { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "bind9utils" }, { "binary_version": "1:9.18.1-1ubuntu1.3", "binary_name": "dnsutils" } ] }