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.
{ "binaries": [ { "binary_name": "bind9", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-dbgsym", "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-dnsutils-dbgsym", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-doc", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-host", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-host-dbgsym", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-libs", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-libs-dbgsym", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-utils", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9-utils-dbgsym", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "bind9utils", "binary_version": "1:9.18.1-1ubuntu1.3" }, { "binary_name": "dnsutils", "binary_version": "1:9.18.1-1ubuntu1.3" } ], "availability": "No subscription required" }