The DNS message parsing code in named includes a section whose computational complexity is overly high. It does not cause problems for typical DNS traffic, but crafted queries and responses may cause excessive CPU load on the affected named instance by exploiting this flaw. This issue affects both authoritative servers and recursive resolvers.
This issue affects BIND 9 versions 9.0.0 through 9.16.45, 9.18.0 through 9.18.21, 9.19.0 through 9.19.19, 9.9.3-S1 through 9.11.37-S1, 9.16.8-S1 through 9.16.45-S1, and 9.18.11-S1 through 9.18.21-S1.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ontap | Netapp | 9.14.1 (including) | 9.14.1 (including) |
| Ontap | Netapp | 9.15.1 (including) | 9.15.1 (including) |
| Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | RedHat | bind-32:9.8.2-0.68.rc1.el6_10.14 | * |
| Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION | RedHat | bind-dyndb-ldap-0:2.3-8.el6_10.1 | * |
| Red Hat Enterprise Linux 7 | RedHat | bind-32:9.11.4-26.P2.el7_9.16 | * |
| Red Hat Enterprise Linux 7 | RedHat | bind-dyndb-ldap-0:11.1-7.el7_9.1 | * |
| Red Hat Enterprise Linux 7 | RedHat | dhcp-12:4.2.5-83.el7_9.2 | * |
| Red Hat Enterprise Linux 8 | RedHat | bind9.16-32:9.16.23-0.16.el8_9.2 | * |
| Red Hat Enterprise Linux 8 | RedHat | bind-32:9.11.36-11.el8_9.1 | * |
| Red Hat Enterprise Linux 8 | RedHat | bind-32:9.11.36-14.el8_10 | * |
| Red Hat Enterprise Linux 8 | RedHat | bind-32:9.11.36-11.el8_9.1 | * |
| Red Hat Enterprise Linux 8 | RedHat | bind-32:9.11.36-14.el8_10 | * |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | RedHat | bind-32:9.11.13-6.el8_2.7 | * |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | RedHat | dhcp-12:4.3.6-40.el8_2.3 | * |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | RedHat | bind-32:9.11.26-4.el8_4.4 | * |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | RedHat | dhcp-12:4.3.6-44.el8_4.3 | * |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | RedHat | bind-32:9.11.26-4.el8_4.4 | * |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | RedHat | dhcp-12:4.3.6-44.el8_4.3 | * |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | RedHat | bind-32:9.11.26-4.el8_4.4 | * |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | RedHat | dhcp-12:4.3.6-44.el8_4.3 | * |
| Red Hat Enterprise Linux 8.6 Extended Update Support | RedHat | bind9.16-32:9.16.23-0.7.el8_6.5 | * |
| Red Hat Enterprise Linux 8.6 Extended Update Support | RedHat | bind-32:9.11.36-3.el8_6.7 | * |
| Red Hat Enterprise Linux 8.6 Extended Update Support | RedHat | dhcp-12:4.3.6-47.el8_6.2 | * |
| Red Hat Enterprise Linux 8.8 Extended Update Support | RedHat | bind9.16-32:9.16.23-0.14.el8_8.4 | * |
| Red Hat Enterprise Linux 8.8 Extended Update Support | RedHat | bind-32:9.11.36-8.el8_8.4 | * |
| Red Hat Enterprise Linux 8.8 Extended Update Support | RedHat | dhcp-12:4.3.6-49.el8_8.1 | * |
| Red Hat Enterprise Linux 9 | RedHat | bind-32:9.16.23-14.el9_3.4 | * |
| Red Hat Enterprise Linux 9 | RedHat | bind-dyndb-ldap-0:11.9-8.el9_3.3 | * |
| Red Hat Enterprise Linux 9 | RedHat | bind-32:9.16.23-18.el9_4.1 | * |
| Red Hat Enterprise Linux 9 | RedHat | bind-dyndb-ldap-0:11.9-9.el9_4 | * |
| Red Hat Enterprise Linux 9.0 Extended Update Support | RedHat | bind-32:9.16.23-1.el9_0.5 | * |
| Red Hat Enterprise Linux 9.0 Extended Update Support | RedHat | bind-dyndb-ldap-0:11.9-7.el9_0.1 | * |
| Red Hat Enterprise Linux 9.2 Extended Update Support | RedHat | bind-32:9.16.23-11.el9_2.4 | * |
| Red Hat Enterprise Linux 9.2 Extended Update Support | RedHat | bind-dyndb-ldap-0:11.9-8.el9_2.2 | * |
| Bind9 | Ubuntu | bionic | * |
| Bind9 | Ubuntu | devel | * |
| Bind9 | Ubuntu | esm-infra/xenial | * |
| Bind9 | Ubuntu | focal | * |
| Bind9 | Ubuntu | jammy | * |
| Bind9 | Ubuntu | mantic | * |
| Bind9 | Ubuntu | noble | * |
| Bind9 | Ubuntu | oracular | * |
| Bind9 | Ubuntu | trusty | * |
| Bind9 | Ubuntu | trusty/esm | * |
| Bind9 | Ubuntu | upstream | * |
| Bind9 | Ubuntu | xenial | * |
| Isc-dhcp | Ubuntu | mantic | * |