# CVE-2023-0466: libssl3t64: The function X509_VERIFY_PARAM_add0_policy() is documented toimplicitly enable the certificate policy check when doin... CVE-2023-0466 is fixed in 17 products on 1 platform, first by libssl1.0.0 1.0.2n-1ubuntu5.12, released March 28, 2023. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-0466 - Priority: Routine - CVSS: 5.3 (Negligible) - EPSS: 0.0177 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Mar 28, 2023 ## Description The function X509_VERIFY_PARAM_add0_policy() is documented toimplicitly enable the certificate policy check when doing certificateverification. However the implementation of the function does notenable the check which allows certificates with invalid or incorrectpolicies to pass the certificate verification.As suddenly enabling the policy check could break existing deployments itwasdecided to keep the existing behavior of theX509_VERIFY_PARAM_add0_policy()function.Instead the applications that require OpenSSL to perform certificatepolicy check need to use X509_VERIFY_PARAM_set1_policies() or explicitlyenable the policy check by calling X509_VERIFY_PARAM_set_flags() withthe X509_V_FLAG_POLICY_CHECK flag argument.Certificate policy checks are disabled by default in OpenSSL and are notcommonly used by applications. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libssl1.0.0 Ubuntu 18.04.6 LTS (bionic) | 1.0.2n-1ubuntu5.12 | [libssl1.0.0 1.0.2n-1ubuntu5.12](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssl1.0.0-1.0.2n-1ubuntu5.12.md) | Mar 28, 2023 | | Linux | libssl1.1 Ubuntu 18.04.6 LTS (bionic) | 1.1.1-1ubuntu2.1~18.04.22 | [libssl1.1 1.1.1-1ubuntu2.1~18.04.22](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libssl1.1-1.1.1-1ubuntu2.1-18.04.22.md) | Mar 28, 2023 | | Linux | libssl1.1 Ubuntu 20.04 LTS (focal) | 1.1.1f-1ubuntu2.18 | [libssl1.1 1.1.1f-1ubuntu2.18](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libssl1.1-1.1.1f-1ubuntu2.18.md) | Mar 28, 2023 | | Linux | libssl3 Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.9 | [libssl3 3.0.2-0ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libssl3-3.0.2-0ubuntu1.9.md) | Mar 28, 2023 | | Linux | libssl3t64 Ubuntu 24.10 (oracular) | 3.0.8-1ubuntu2 | [libssl3t64 3.0.8-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libssl3t64-3.0.8-1ubuntu2.md) | Jan 16, 2026 | | Linux | libssl3t64 Ubuntu 25.04 (plucky) | 3.0.8-1ubuntu2 | [libssl3t64 3.0.8-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libssl3t64-3.0.8-1ubuntu2.md) | Jan 16, 2026 | | Linux | openssl Debian 12.15 (bookworm) | 3.0.9-1 | [DEBIAN-CVE-2023-0466](https://patchblox.com/security/data/fix/linux/debian-cve-2023-0466.md) | Mar 28, 2023 | | Linux | openssl Debian 13.5 (trixie) | 3.0.9-1 | [DEBIAN-CVE-2023-0466](https://patchblox.com/security/data/fix/linux/debian-cve-2023-0466.md) | Mar 28, 2023 | | Linux | openssl Debian 14 | 3.0.9-1 | [DEBIAN-CVE-2023-0466](https://patchblox.com/security/data/fix/linux/debian-cve-2023-0466.md) | Mar 28, 2023 | | Linux | openssl RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl Ubuntu 18.04.6 LTS (bionic) | 1.1.1-1ubuntu2.1~18.04.22 | [openssl 1.1.1-1ubuntu2.1~18.04.22](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openssl-1.1.1-1ubuntu2.1-18.04.22.md) | Mar 28, 2023 | | Linux | openssl Ubuntu 20.04 LTS (focal) | 1.1.1f-1ubuntu2.18 | [openssl 1.1.1f-1ubuntu2.18](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openssl-1.1.1f-1ubuntu2.18.md) | Mar 28, 2023 | | Linux | openssl Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.9 | [openssl 3.0.2-0ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssl-3.0.2-0ubuntu1.9.md) | Mar 28, 2023 | | Linux | openssl Ubuntu 24.10 (oracular) | 3.0.8-1ubuntu2 | [openssl 3.0.8-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openssl-3.0.8-1ubuntu2.md) | Jan 16, 2026 | | Linux | openssl Ubuntu 25.04 (plucky) | 3.0.8-1ubuntu2 | [openssl 3.0.8-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openssl-3.0.8-1ubuntu2.md) | Jan 16, 2026 | | Linux | openssl almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | | Linux | openssl-debuginfo amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-debugsource amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-devel RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-devel almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-devel amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-devel ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | | Linux | openssl-libs RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-libs almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-libs amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-libs ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | | Linux | openssl-libs-debuginfo amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-perl RHEL 9 | 1:3.0.7-16.el9_2 | [RHSA-2023:3722](https://patchblox.com/security/data/fix/linux/rhsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-perl almalinux 9 | 1:3.0.7-16.el9_2 | [ALSA-2023:3722](https://patchblox.com/security/data/fix/linux/alsa-2023-3722.md) | Jun 21, 2023 | | Linux | openssl-perl amzn 2023 | 1:3.0.8-1.amzn2023.0.2 | [ALAS2023-2023-181](https://patchblox.com/security/data/fix/linux/alas2023-2023-181.md) | May 11, 2023 | | Linux | openssl-perl ol 9 | 2:3.0.7-16.0.1.ksplice1.el9_2 | [ELSA-2023-12768](https://patchblox.com/security/data/fix/linux/elsa-2023-12768.md) | Aug 31, 2023 | | Linux | openssl1.0 Ubuntu 18.04.6 LTS (bionic) | 1.0.2n-1ubuntu5.12 | [openssl1.0 1.0.2n-1ubuntu5.12](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openssl1.0-1.0.2n-1ubuntu5.12.md) | Mar 28, 2023 | | Linux | ovmf Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [ovmf 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ovmf-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 | | Linux | ovmf-ia32 Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [ovmf-ia32 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ovmf-ia32-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 | | Linux | qemu-efi Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [qemu-efi 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 | | Linux | qemu-efi-aarch64 Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [qemu-efi-aarch64 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-aarch64-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 | | Linux | qemu-efi-arm Ubuntu 22.04.1 LTS (jammy) | 2022.02-3ubuntu0.22.04.4 | [qemu-efi-arm 2022.02-3ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-qemu-efi-arm-2022.02-3ubuntu0.22.04.4.md) | Aug 12, 2025 | --- Data as of 2026-11-08T13:06:02Z UTC. 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