Clients using DNS-over-HTTPS (DoH) can exhaust a DNS resolver's CPU and/or memory by flooding it with crafted valid or invalid HTTP/2 traffic. This issue affects BIND 9 versions 9.18.0 through 9.18.32, 9.20.0 through 9.20.4, 9.21.0 through 9.21.3, and 9.18.11-S1 through 9.18.32-S1.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-dnsutils" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-dnsutils-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-doc" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-host" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-host-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-libs" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-libs-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-utils" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9-utils-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "bind9utils" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "dnsutils" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-dev" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-dnsutils" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-dnsutils-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-doc" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-host" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-host-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-libs" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-libs-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-utils" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9-utils-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "bind9utils" }, { "binary_version": "1:9.18.30-0ubuntu0.22.04.2", "binary_name": "dnsutils" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-dbgsym" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-dev" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-dnsutils" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-dnsutils-dbgsym" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-doc" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-host" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-host-dbgsym" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-libs" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-libs-dbgsym" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-utils" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9-utils-dbgsym" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "bind9utils" }, { "binary_version": "1:9.20.0-2ubuntu3.1", "binary_name": "dnsutils" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-dev" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-dnsutils" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-dnsutils-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-doc" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-host" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-host-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-libs" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-libs-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-utils" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9-utils-dbgsym" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "bind9utils" }, { "binary_version": "1:9.18.30-0ubuntu0.24.04.2", "binary_name": "dnsutils" } ] }