# CVE-2022-3204: unbound: This update for unbound fixes the following issues: unbound was updated to 1.20.0: * A lot of bugfixes and added fe... CVE-2022-3204 is fixed in 16 products on 1 platform, first by libunbound2 1.6.7-1ubuntu2.6, released September 26, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-3204 - Priority: High - CVSS: 7.5 (Moderate) - EPSS: 0.0165 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Sep 26, 2022 ## Description This update for unbound fixes the following issues: unbound was updated to 1.20.0: * A lot of bugfixes and added features. For a complete list take a look at the changelog located at: /usr/share/doc/packages/unbound/Changelog or https://www.nlnetlabs.nl/projects/unbound/download/ Some Noteworthy Changes: * Removed DLV. The DLV has been decommisioned since unbound 1.5.4 and has been advised to stop using it since. The use of dlv options displays a warning. * Remove EDNS lame procedure, do not re-query without EDNS after timeout. * Add DNS over HTTPS * libunbound has been upgraded to major version 8 Security Fixes: * CVE-2023-50387: DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers. [bsc#1219823] * CVE-2023-50868: NSEC3 closest encloser proof can exhaust CPU. [bsc#1219826] * CVE-2022-30698: Novel 'ghost domain names' attack by introducing subdomain delegations. [bsc#1202033] * CVE-2022-30699: Novel 'ghost domain names' attack by updating almost expired delegation information. [bsc#1202031] * CVE-2022-3204: NRDelegation attack leads to uncontrolled resource consumption (Non-Responsive Delegation Attack). [bsc#1203643] Packaging Changes: * Use prefixes instead of sudo in unbound.service * Remove no longer necessary BuildRequires: libfstrm-devel and libprotobuf-c-devel ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libunbound2 Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.6 | [libunbound2 1.6.7-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libunbound2-1.6.7-1ubuntu2.6.md) | Sep 26, 2022 | | Linux | libunbound8 Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.4 | [libunbound8 1.9.4-2ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libunbound8-1.9.4-2ubuntu1.4.md) | Sep 26, 2022 | | Linux | libunbound8 Ubuntu 22.04.1 LTS (jammy) | 1.13.1-1ubuntu5.3 | [libunbound8 1.13.1-1ubuntu5.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libunbound8-1.13.1-1ubuntu5.3.md) | Sep 26, 2022 | | Linux | python-unbound Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.6 | [python-unbound 1.6.7-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-unbound-1.6.7-1ubuntu2.6.md) | Sep 26, 2022 | | Linux | python-unbound Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.4 | [python-unbound 1.9.4-2ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python-unbound-1.9.4-2ubuntu1.4.md) | Sep 26, 2022 | | Linux | python3-unbound RHEL 8 | 0:1.16.2-5.el8 | [RHSA-2023:2771](https://patchblox.com/security/data/fix/linux/rhsa-2023-2771.md) | May 16, 2023 | | Linux | python3-unbound RHEL 9 | 0:1.16.2-3.el9 | [RHSA-2023:2370](https://patchblox.com/security/data/fix/linux/rhsa-2023-2370.md) | May 9, 2023 | | Linux | python3-unbound Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.6 | [python3-unbound 1.6.7-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-unbound-1.6.7-1ubuntu2.6.md) | Sep 26, 2022 | | Linux | python3-unbound Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.4 | [python3-unbound 1.9.4-2ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-unbound-1.9.4-2ubuntu1.4.md) | Sep 26, 2022 | | Linux | python3-unbound Ubuntu 22.04.1 LTS (jammy) | 1.13.1-1ubuntu5.3 | [python3-unbound 1.13.1-1ubuntu5.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-unbound-1.13.1-1ubuntu5.3.md) | Sep 26, 2022 | | Linux | python3-unbound almalinux 8 | 1.16.2-5.el8 | [ALSA-2023:2771](https://patchblox.com/security/data/fix/linux/alsa-2023-2771.md) | May 16, 2023 | | Linux | python3-unbound almalinux 9 | 1.16.2-3.el9 | [ALSA-2023:2370](https://patchblox.com/security/data/fix/linux/alsa-2023-2370.md) | May 9, 2023 | | Linux | python3-unbound amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | python3-unbound ol 8 | 0:1.16.2-5.el8 | [ELSA-2023-2771](https://patchblox.com/security/data/fix/linux/elsa-2023-2771.md) | May 24, 2023 | | Linux | python3-unbound ol 9 | 0:1.16.2-3.el9 | [ELSA-2023-2370](https://patchblox.com/security/data/fix/linux/elsa-2023-2370.md) | May 15, 2023 | | Linux | python3-unbound-debuginfo amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound Debian 12.15 (bookworm) | 1.16.3-1 | [DEBIAN-CVE-2022-3204](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3204.md) | Sep 26, 2022 | | Linux | unbound Debian 13.5 (trixie) | 1.16.3-1 | [DEBIAN-CVE-2022-3204](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3204.md) | Sep 26, 2022 | | Linux | unbound Debian 14 | 1.16.3-1 | [DEBIAN-CVE-2022-3204](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3204.md) | Sep 26, 2022 | | Linux | unbound RHEL 8 | 0:1.16.2-5.el8 | [RHSA-2023:2771](https://patchblox.com/security/data/fix/linux/rhsa-2023-2771.md) | May 16, 2023 | | Linux | unbound RHEL 9 | 0:1.16.2-3.el9 | [RHSA-2023:2370](https://patchblox.com/security/data/fix/linux/rhsa-2023-2370.md) | May 9, 2023 | | Linux | unbound Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.6 | [unbound 1.6.7-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-unbound-1.6.7-1ubuntu2.6.md) | Sep 26, 2022 | | Linux | unbound Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.4 | [unbound 1.9.4-2ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-unbound-1.9.4-2ubuntu1.4.md) | Sep 26, 2022 | | Linux | unbound Ubuntu 22.04.1 LTS (jammy) | 1.13.1-1ubuntu5.3 | [unbound 1.13.1-1ubuntu5.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-unbound-1.13.1-1ubuntu5.3.md) | Sep 26, 2022 | | Linux | unbound almalinux 8 | 1.16.2-5.el8 | [ALSA-2023:2771](https://patchblox.com/security/data/fix/linux/alsa-2023-2771.md) | May 16, 2023 | | Linux | unbound almalinux 9 | 1.16.2-3.el9 | [ALSA-2023:2370](https://patchblox.com/security/data/fix/linux/alsa-2023-2370.md) | May 9, 2023 | | Linux | unbound amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound ol 8 | 0:1.16.2-5.el8 | [ELSA-2023-2771](https://patchblox.com/security/data/fix/linux/elsa-2023-2771.md) | May 24, 2023 | | Linux | unbound ol 9 | 0:1.16.2-3.el9 | [ELSA-2023-2370](https://patchblox.com/security/data/fix/linux/elsa-2023-2370.md) | May 15, 2023 | | Linux | unbound opensuse-leap 15.6 | 1.20.0-150600.23.3.1 | [SUSE-SU-2024:1923-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-1923-1.md) | Jun 4, 2024 | | Linux | unbound rocky 8 | 0:1.16.2-5.12.el8_10 | [RLSA-2023:2771](https://patchblox.com/security/data/fix/linux/rlsa-2023-2771.md) | Aug 4, 2026 | | Linux | unbound sles 15.6 | 1.20.0-150600.23.3.1 | [SUSE-SU-2024:1923-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-1923-1.md) | Jun 4, 2024 | | Linux | unbound-anchor Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.6 | [unbound-anchor 1.6.7-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-unbound-anchor-1.6.7-1ubuntu2.6.md) | Sep 26, 2022 | | Linux | unbound-anchor Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.4 | [unbound-anchor 1.9.4-2ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-unbound-anchor-1.9.4-2ubuntu1.4.md) | Sep 26, 2022 | | Linux | unbound-anchor Ubuntu 22.04.1 LTS (jammy) | 1.13.1-1ubuntu5.3 | [unbound-anchor 1.13.1-1ubuntu5.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-unbound-anchor-1.13.1-1ubuntu5.3.md) | Sep 26, 2022 | | Linux | unbound-anchor amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-anchor-debuginfo amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-debuginfo amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-debugsource amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-devel RHEL 8 | 0:1.16.2-5.el8 | [RHSA-2023:2771](https://patchblox.com/security/data/fix/linux/rhsa-2023-2771.md) | May 16, 2023 | | Linux | unbound-devel RHEL 9 | 0:1.16.2-3.el9 | [RHSA-2023:2370](https://patchblox.com/security/data/fix/linux/rhsa-2023-2370.md) | May 9, 2023 | | Linux | unbound-devel almalinux 8 | 1.16.2-5.el8 | [ALSA-2023:2771](https://patchblox.com/security/data/fix/linux/alsa-2023-2771.md) | May 16, 2023 | | Linux | unbound-devel almalinux 9 | 1.16.2-3.el9 | [ALSA-2023:2370](https://patchblox.com/security/data/fix/linux/alsa-2023-2370.md) | May 9, 2023 | | Linux | unbound-devel amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-devel ol 8 | 0:1.16.2-5.el8 | [ELSA-2023-2771](https://patchblox.com/security/data/fix/linux/elsa-2023-2771.md) | May 24, 2023 | | Linux | unbound-devel ol 9 | 0:1.16.2-3.el9 | [ELSA-2023-2370](https://patchblox.com/security/data/fix/linux/elsa-2023-2370.md) | May 15, 2023 | | Linux | unbound-host Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.6 | [unbound-host 1.6.7-1ubuntu2.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-unbound-host-1.6.7-1ubuntu2.6.md) | Sep 26, 2022 | | Linux | unbound-host Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.4 | [unbound-host 1.9.4-2ubuntu1.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-unbound-host-1.9.4-2ubuntu1.4.md) | Sep 26, 2022 | | Linux | unbound-host Ubuntu 22.04.1 LTS (jammy) | 1.13.1-1ubuntu5.3 | [unbound-host 1.13.1-1ubuntu5.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-unbound-host-1.13.1-1ubuntu5.3.md) | Sep 26, 2022 | | Linux | unbound-libs RHEL 8 | 0:1.16.2-5.el8 | [RHSA-2023:2771](https://patchblox.com/security/data/fix/linux/rhsa-2023-2771.md) | May 16, 2023 | | Linux | unbound-libs RHEL 9 | 0:1.16.2-3.el9 | [RHSA-2023:2370](https://patchblox.com/security/data/fix/linux/rhsa-2023-2370.md) | May 9, 2023 | | Linux | unbound-libs almalinux 8 | 1.16.2-5.el8 | [ALSA-2023:2771](https://patchblox.com/security/data/fix/linux/alsa-2023-2771.md) | May 16, 2023 | | Linux | unbound-libs almalinux 9 | 1.16.2-3.el9 | [ALSA-2023:2370](https://patchblox.com/security/data/fix/linux/alsa-2023-2370.md) | May 9, 2023 | | Linux | unbound-libs amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-libs ol 8 | 0:1.16.2-5.el8 | [ELSA-2023-2771](https://patchblox.com/security/data/fix/linux/elsa-2023-2771.md) | May 24, 2023 | | Linux | unbound-libs ol 9 | 0:1.16.2-3.el9 | [ELSA-2023-2370](https://patchblox.com/security/data/fix/linux/elsa-2023-2370.md) | May 15, 2023 | | Linux | unbound-libs-debuginfo amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-utils amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | | Linux | unbound-utils-debuginfo amzn 2023 | 1.16.3-2.amzn2023.0.1 | [ALAS2023-2023-078](https://patchblox.com/security/data/fix/linux/alas2023-2023-078.md) | Feb 17, 2023 | --- Data as of 2026-11-08T06:59:42Z UTC. 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