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.
{ "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-dnsutils" }, { "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-libs" }, { "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": "bind9utils" }, { "binary_version": "1:9.18.30-0ubuntu0.20.04.2", "binary_name": "dnsutils" } ], "availability": "No subscription required" }
{ "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-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-host" }, { "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-utils" }, { "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" }
{ "binaries": [ { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libbind-dev" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libbind-export-dev" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libbind9-161" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libdns-export1110" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libdns1110" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libirs-export161" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libirs161" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libisc-export1105" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libisc1105" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libisccc-export161" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libisccc161" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libisccfg-export163" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "libisccfg163" }, { "binary_version": "1:9.11.19+dfsg-2.1ubuntu3", "binary_name": "liblwres161" } ] }
{ "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-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-host" }, { "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-utils" }, { "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" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-client" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-client-ddns" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-common" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-dev" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-keama" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-relay" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-server" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-server-ldap" } ] }
{ "binaries": [ { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "bind9" }, { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "bind9-dev" }, { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "bind9-dnsutils" }, { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "bind9-host" }, { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "bind9-libs" }, { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "bind9-utils" }, { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "bind9utils" }, { "binary_version": "1:9.20.0-2ubuntu4", "binary_name": "dnsutils" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-client" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-client-ddns" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-common" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-dev" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-keama" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-relay" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-server" }, { "binary_version": "4.4.3-P1-4ubuntu2", "binary_name": "isc-dhcp-server-ldap" } ] }
{ "binaries": [ { "binary_version": "4.3.5-3ubuntu7.4", "binary_name": "isc-dhcp-client" }, { "binary_version": "4.3.5-3ubuntu7.4", "binary_name": "isc-dhcp-client-ddns" }, { "binary_version": "4.3.5-3ubuntu7.4", "binary_name": "isc-dhcp-common" }, { "binary_version": "4.3.5-3ubuntu7.4", "binary_name": "isc-dhcp-dev" }, { "binary_version": "4.3.5-3ubuntu7.4", "binary_name": "isc-dhcp-relay" }, { "binary_version": "4.3.5-3ubuntu7.4", "binary_name": "isc-dhcp-server" }, { "binary_version": "4.3.5-3ubuntu7.4", "binary_name": "isc-dhcp-server-ldap" } ] }
{ "binaries": [ { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libbind-dev" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libbind-export-dev" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libbind9-161" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libdns-export1109" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libdns1109" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libirs-export161" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libirs161" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libisc-export1105" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libisc1105" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libisccc-export161" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libisccc161" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libisccfg-export163" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "libisccfg163" }, { "binary_version": "1:9.11.16+dfsg-3~ubuntu1", "binary_name": "liblwres161" } ] }