# CVE-2023-2953: openldap: OpenLDAP is an open-source suite of Lightweight Directory Access Protocol (LDAP) applications and development tools CVE-2023-2953 is fixed in 17 products on 1 platform, first by ldap-utils 2.4.45+dfsg-1ubuntu1.11+esm1, released May 30, 2023. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2023-2953 - Priority: High - CVSS: 7.5 (Low) - EPSS: 0.0200 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: May 30, 2023 ## Description OpenLDAP is an open-source suite of Lightweight Directory Access Protocol (LDAP) applications and development tools. LDAP is a set of protocols used to access and maintain distributed directory information services over an IP network. Security Fix(es): * openldap: null pointer dereference in ber_memalloc_x function (CVE-2023-2953) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | ldap-utils Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.11+esm1 | [ldap-utils 2.4.45+dfsg-1ubuntu1.11+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ldap-utils-2.4.45-dfsg-1ubuntu1.11-esm1.md) | May 30, 2023 | | Linux | ldap-utils Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.10 | [ldap-utils 2.4.49+dfsg-2ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-focal-ldap-utils-2.4.49-dfsg-2ubuntu1.10.md) | May 30, 2023 | | Linux | ldap-utils Ubuntu 22.04.1 LTS (jammy) | 2.5.16+dfsg-0ubuntu0.22.04.2 | [ldap-utils 2.5.16+dfsg-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-ldap-utils-2.5.16-dfsg-0ubuntu0.22.04.2.md) | May 30, 2023 | | Linux | libldap-2.4-2 Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.11+esm1 | [libldap-2.4-2 2.4.45+dfsg-1ubuntu1.11+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libldap-2.4-2-2.4.45-dfsg-1ubuntu1.11-esm1.md) | May 30, 2023 | | Linux | libldap-2.4-2 Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.10 | [libldap-2.4-2 2.4.49+dfsg-2ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libldap-2.4-2-2.4.49-dfsg-2ubuntu1.10.md) | May 30, 2023 | | Linux | libldap-2.5-0 Ubuntu 22.04.1 LTS (jammy) | 2.5.16+dfsg-0ubuntu0.22.04.2 | [libldap-2.5-0 2.5.16+dfsg-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libldap-2.5-0-2.5.16-dfsg-0ubuntu0.22.04.2.md) | May 30, 2023 | | Linux | libldap-common Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.11+esm1 | [libldap-common 2.4.45+dfsg-1ubuntu1.11+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libldap-common-2.4.45-dfsg-1ubuntu1.11-esm1.md) | May 30, 2023 | | Linux | libldap-common Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.10 | [libldap-common 2.4.49+dfsg-2ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libldap-common-2.4.49-dfsg-2ubuntu1.10.md) | May 30, 2023 | | Linux | libldap-common Ubuntu 22.04.1 LTS (jammy) | 2.5.16+dfsg-0ubuntu0.22.04.2 | [libldap-common 2.5.16+dfsg-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libldap-common-2.5.16-dfsg-0ubuntu0.22.04.2.md) | May 30, 2023 | | Linux | openldap Debian 13.5 (trixie) | 2.5.16+dfsg-1 | [DEBIAN-CVE-2023-2953](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2953.md) | May 30, 2023 | | Linux | openldap Debian 14 | 2.5.16+dfsg-1 | [DEBIAN-CVE-2023-2953](https://patchblox.com/security/data/fix/linux/debian-cve-2023-2953.md) | May 30, 2023 | | Linux | openldap RHEL 8 | 0:2.4.46-19.el8_10 | [RHSA-2024:4264](https://patchblox.com/security/data/fix/linux/rhsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap almalinux 8 | 2.4.46-19.el8_10 | [ALSA-2024:4264](https://patchblox.com/security/data/fix/linux/alsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap ol 8 | 0:2.4.46-19.el8_10 | [ELSA-2024-4264](https://patchblox.com/security/data/fix/linux/elsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap rocky 8 | 0:2.4.46-19.el8_10 | [RLSA-2024:4264](https://patchblox.com/security/data/fix/linux/rlsa-2024-4264.md) | May 7, 2025 | | Linux | openldap-clients RHEL 8 | 0:2.4.46-19.el8_10 | [RHSA-2024:4264](https://patchblox.com/security/data/fix/linux/rhsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-clients almalinux 8 | 2.4.46-19.el8_10 | [ALSA-2024:4264](https://patchblox.com/security/data/fix/linux/alsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-clients amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-clients ol 8 | 0:2.4.46-19.el8_10 | [ELSA-2024-4264](https://patchblox.com/security/data/fix/linux/elsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-clients-debuginfo amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-compat amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-compat-debuginfo amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-debuginfo amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-debugsource amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-devel RHEL 8 | 0:2.4.46-19.el8_10 | [RHSA-2024:4264](https://patchblox.com/security/data/fix/linux/rhsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-devel almalinux 8 | 2.4.46-19.el8_10 | [ALSA-2024:4264](https://patchblox.com/security/data/fix/linux/alsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-devel amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-devel ol 8 | 0:2.4.46-19.el8_10 | [ELSA-2024-4264](https://patchblox.com/security/data/fix/linux/elsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-servers RHEL 8 | 0:2.4.46-19.el8_10 | [RHSA-2024:4264](https://patchblox.com/security/data/fix/linux/rhsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-servers almalinux 8 | 2.4.46-19.el8_10 | [ALSA-2024:4264](https://patchblox.com/security/data/fix/linux/alsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-servers amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | openldap-servers ol 8 | 0:2.4.46-19.el8_10 | [ELSA-2024-4264](https://patchblox.com/security/data/fix/linux/elsa-2024-4264.md) | Jul 2, 2024 | | Linux | openldap-servers-debuginfo amzn 2023 | 2.4.57-6.amzn2023.0.5 | [ALAS2023-2023-219](https://patchblox.com/security/data/fix/linux/alas2023-2023-219.md) | Jun 21, 2023 | | Linux | slapd Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.11+esm1 | [slapd 2.4.45+dfsg-1ubuntu1.11+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-slapd-2.4.45-dfsg-1ubuntu1.11-esm1.md) | May 30, 2023 | | Linux | slapd Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.10 | [slapd 2.4.49+dfsg-2ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-focal-slapd-2.4.49-dfsg-2ubuntu1.10.md) | May 30, 2023 | | Linux | slapd Ubuntu 22.04.1 LTS (jammy) | 2.5.16+dfsg-0ubuntu0.22.04.2 | [slapd 2.5.16+dfsg-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-slapd-2.5.16-dfsg-0ubuntu0.22.04.2.md) | May 30, 2023 | | Linux | slapd-contrib Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.10 | [slapd-contrib 2.4.49+dfsg-2ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-focal-slapd-contrib-2.4.49-dfsg-2ubuntu1.10.md) | May 30, 2023 | | Linux | slapd-contrib Ubuntu 22.04.1 LTS (jammy) | 2.5.16+dfsg-0ubuntu0.22.04.2 | [slapd-contrib 2.5.16+dfsg-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-slapd-contrib-2.5.16-dfsg-0ubuntu0.22.04.2.md) | May 30, 2023 | | Linux | slapd-smbk5pwd Ubuntu 18.04.6 LTS (bionic) | 2.4.45+dfsg-1ubuntu1.11+esm1 | [slapd-smbk5pwd 2.4.45+dfsg-1ubuntu1.11+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-slapd-smbk5pwd-2.4.45-dfsg-1ubuntu1.11-esm1.md) | May 30, 2023 | | Linux | slapd-smbk5pwd Ubuntu 20.04 LTS (focal) | 2.4.49+dfsg-2ubuntu1.10 | [slapd-smbk5pwd 2.4.49+dfsg-2ubuntu1.10](https://patchblox.com/security/data/fix/linux/ubuntu-focal-slapd-smbk5pwd-2.4.49-dfsg-2ubuntu1.10.md) | May 30, 2023 | | Linux | slapd-smbk5pwd Ubuntu 22.04.1 LTS (jammy) | 2.5.16+dfsg-0ubuntu0.22.04.2 | [slapd-smbk5pwd 2.5.16+dfsg-0ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-slapd-smbk5pwd-2.5.16-dfsg-0ubuntu0.22.04.2.md) | May 30, 2023 | --- Data as of 2026-11-08T00:53:09Z UTC. 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