A malicious client can send many DNS messages over TCP, potentially causing the server to become unstable while the attack is in progress. The server may recover after the attack ceases. Use of ACLs will not mitigate the attack. This issue affects BIND 9 versions 9.18.1 through 9.18.27, 9.19.0 through 9.19.24, and 9.18.11-S1 through 9.18.27-S1.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "bind9", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-dnsutils", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-dnsutils-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-doc", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-host", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-host-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-libs", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-libs-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-utils", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9-utils-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "bind9utils", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" }, { "binary_name": "dnsutils", "binary_version": "1:9.18.28-0ubuntu0.20.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "bind9", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-dev", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-dnsutils", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-dnsutils-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-doc", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-host", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-host-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-libs", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-libs-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-utils", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9-utils-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "bind9utils", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" }, { "binary_name": "dnsutils", "binary_version": "1:9.18.28-0ubuntu0.22.04.1" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "bind9", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-dev", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-dnsutils", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-dnsutils-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-doc", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-host", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-host-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-libs", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-libs-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-utils", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9-utils-dbgsym", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "bind9utils", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" }, { "binary_name": "dnsutils", "binary_version": "1:9.18.28-0ubuntu0.24.04.1" } ] }