# CVE-2023-6129: libssl3t64: Issue summary: The POLY1305 MAC (message authentication code)implementationcontains a bug that might corrupt the inte... CVE-2023-6129 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2023-6129, released January 9, 2024. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2023-6129 - Priority: Routine - CVSS: 6.5 (Low) - EPSS: 0.0232 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jan 9, 2024 ## Description Issue summary: The POLY1305 MAC (message authentication code)implementationcontains a bug that might corrupt the internal state of applicationsrunningon PowerPC CPU based platforms if the CPU provides vector instructions.Impact summary: If an attacker can influence whether the POLY1305 MACalgorithm is used, the application state might be corrupted with variousapplication dependent consequences.The POLY1305 MAC (message authentication code) implementation in OpenSSLforPowerPC CPUs restores the contents of vector registers in a different orderthan they are saved. Thus the contents of some of these vector registersare corrupted when returning to the caller. The vulnerable code is usedonlyon newer PowerPC processors supporting the PowerISA 2.07 instructions.The consequences of this kind of internal application state corruption canbe various - from no consequences, if the calling application does notdepend on the contents of non-volatile XMM registers at all, to the worstconsequences, where the attacker could get complete control of theapplicationprocess. However unless the compiler uses the vector registers for storingpointers, the most likely consequence, if any, would be an incorrect resultof some application dependent calculations or a crash leading to a denialofservice.The POLY1305 MAC algorithm is most frequently used as part of theCHACHA20-POLY1305 AEAD (authenticated encryption with associated data)algorithm. The most common usage of this AEAD cipher is with TLS protocolversions 1.2 and 1.3. If this cipher is enabled on the server a maliciousclient can influence whether this AEAD cipher is used. This implies thatTLS server applications using OpenSSL can be potentially impacted. Howeverwe are currently not aware of any concrete application that would beaffectedby this issue therefore we consider this a Low severity security issue. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | edk2 rocky 9 | 0:20240524-6.el9_5.3 | [RLSA-2024:9088](https://patchblox.com/security/data/fix/linux/rlsa-2024-9088.md) | Mar 17, 2025 | | Linux | edk2-aarch64 RHEL 9 | 0:20240524-6.el9_5 | [RHSA-2024:9088](https://patchblox.com/security/data/fix/linux/rhsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-aarch64 almalinux 9 | 20240524-6.el9_5 | [ALSA-2024:9088](https://patchblox.com/security/data/fix/linux/alsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-aarch64 ol 9 | 0:20240524-6.0.1.el9_5 | [ELSA-2024-9088](https://patchblox.com/security/data/fix/linux/elsa-2024-9088.md) | Nov 14, 2024 | | Linux | edk2-ovmf RHEL 9 | 0:20240524-6.el9_5 | [RHSA-2024:9088](https://patchblox.com/security/data/fix/linux/rhsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-ovmf almalinux 9 | 20240524-6.el9_5 | [ALSA-2024:9088](https://patchblox.com/security/data/fix/linux/alsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-ovmf ol 9 | 0:20240524-6.0.1.el9_5 | [ELSA-2024-9088](https://patchblox.com/security/data/fix/linux/elsa-2024-9088.md) | Nov 14, 2024 | | Linux | edk2-tools RHEL 9 | 0:20240524-6.el9_5 | [RHSA-2024:9088](https://patchblox.com/security/data/fix/linux/rhsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-tools almalinux 9 | 20240524-6.el9_5 | [ALSA-2024:9088](https://patchblox.com/security/data/fix/linux/alsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-tools ol 9 | 0:20240524-6.0.1.el9_5 | [ELSA-2024-9088](https://patchblox.com/security/data/fix/linux/elsa-2024-9088.md) | Nov 14, 2024 | | Linux | edk2-tools-doc RHEL 9 | 0:20240524-6.el9_5 | [RHSA-2024:9088](https://patchblox.com/security/data/fix/linux/rhsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-tools-doc almalinux 9 | 20240524-6.el9_5 | [ALSA-2024:9088](https://patchblox.com/security/data/fix/linux/alsa-2024-9088.md) | Nov 12, 2024 | | Linux | edk2-tools-doc ol 9 | 0:20240524-6.0.1.el9_5 | [ELSA-2024-9088](https://patchblox.com/security/data/fix/linux/elsa-2024-9088.md) | Nov 14, 2024 | | Linux | libssl3 Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.14 | [libssl3 3.0.2-0ubuntu1.14](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libssl3-3.0.2-0ubuntu1.14.md) | Jan 26, 2024 | | Linux | libssl3 Ubuntu 24.04.5 LTS (noble) | 3.0.10-1ubuntu4 | [libssl3 3.0.10-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libssl3-3.0.10-1ubuntu4.md) | Jan 26, 2024 | | Linux | libssl3t64 Ubuntu 24.10 (oracular) | 3.0.10-1ubuntu4 | [libssl3t64 3.0.10-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libssl3t64-3.0.10-1ubuntu4.md) | Jan 15, 2024 | | Linux | libssl3t64 Ubuntu 25.04 (plucky) | 3.0.10-1ubuntu4 | [libssl3t64 3.0.10-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libssl3t64-3.0.10-1ubuntu4.md) | Jan 15, 2024 | | Linux | openssl Debian 12.15 (bookworm) | 3.0.13-1~deb12u1 | [DEBIAN-CVE-2023-6129](https://patchblox.com/security/data/fix/linux/debian-cve-2023-6129.md) | Jan 9, 2024 | | Linux | openssl Debian 13.5 (trixie) | 3.1.5-1 | [DEBIAN-CVE-2023-6129](https://patchblox.com/security/data/fix/linux/debian-cve-2023-6129.md) | Jan 9, 2024 | | Linux | openssl Debian 14 | 3.1.5-1 | [DEBIAN-CVE-2023-6129](https://patchblox.com/security/data/fix/linux/debian-cve-2023-6129.md) | Jan 9, 2024 | | Linux | openssl RHEL 9 | 1:3.0.7-27.el9 | [RHSA-2024:2447](https://patchblox.com/security/data/fix/linux/rhsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl Ubuntu 22.04.1 LTS (jammy) | 3.0.2-0ubuntu1.14 | [openssl 3.0.2-0ubuntu1.14](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openssl-3.0.2-0ubuntu1.14.md) | Jan 26, 2024 | | Linux | openssl Ubuntu 24.04.5 LTS (noble) | 3.0.10-1ubuntu4 | [openssl 3.0.10-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openssl-3.0.10-1ubuntu4.md) | Jan 26, 2024 | | Linux | openssl Ubuntu 24.10 (oracular) | 3.0.10-1ubuntu4 | [openssl 3.0.10-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openssl-3.0.10-1ubuntu4.md) | Jan 15, 2024 | | Linux | openssl Ubuntu 25.04 (plucky) | 3.0.10-1ubuntu4 | [openssl 3.0.10-1ubuntu4](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openssl-3.0.10-1ubuntu4.md) | Jan 15, 2024 | | Linux | openssl almalinux 9 | 1:3.0.7-27.el9 | [ALSA-2024:2447](https://patchblox.com/security/data/fix/linux/alsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl ol 9 | 1:3.0.7-27.0.3.el9 | [ELSA-2024-2447](https://patchblox.com/security/data/fix/linux/elsa-2024-2447.md) | May 3, 2024 | | Linux | openssl-devel RHEL 9 | 1:3.0.7-27.el9 | [RHSA-2024:2447](https://patchblox.com/security/data/fix/linux/rhsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl-devel almalinux 9 | 1:3.0.7-27.el9 | [ALSA-2024:2447](https://patchblox.com/security/data/fix/linux/alsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl-devel ol 9 | 1:3.0.7-27.0.3.el9 | [ELSA-2024-2447](https://patchblox.com/security/data/fix/linux/elsa-2024-2447.md) | May 3, 2024 | | Linux | openssl-fips-provider ol 9 | 0:3.0.7-2.0.1.el9 | [ELSA-2024-2447](https://patchblox.com/security/data/fix/linux/elsa-2024-2447.md) | May 3, 2024 | | Linux | openssl-libs RHEL 9 | 1:3.0.7-27.el9 | [RHSA-2024:2447](https://patchblox.com/security/data/fix/linux/rhsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl-libs almalinux 9 | 1:3.0.7-27.el9 | [ALSA-2024:2447](https://patchblox.com/security/data/fix/linux/alsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl-libs ol 9 | 1:3.0.7-27.0.3.el9 | [ELSA-2024-2447](https://patchblox.com/security/data/fix/linux/elsa-2024-2447.md) | May 3, 2024 | | Linux | openssl-perl RHEL 9 | 1:3.0.7-27.el9 | [RHSA-2024:2447](https://patchblox.com/security/data/fix/linux/rhsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl-perl almalinux 9 | 1:3.0.7-27.el9 | [ALSA-2024:2447](https://patchblox.com/security/data/fix/linux/alsa-2024-2447.md) | Apr 30, 2024 | | Linux | openssl-perl ol 9 | 1:3.0.7-27.0.3.el9 | [ELSA-2024-2447](https://patchblox.com/security/data/fix/linux/elsa-2024-2447.md) | May 3, 2024 | --- Data as of 2026-11-08T06:59:42Z UTC. 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