--- title: 'USN-4634-2: OpenLDAP vulnerabilities | Ubuntu security notices' description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/notices/USN-4634-2 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-4634-2 --- # USN-4634-2: OpenLDAP vulnerabilities Publication date 23 November 2020 Overview OpenLDAP could be made to crash if it received specially crafted network traffic. Releases [14.04 LTS](https://ubuntu.com/security/notices?release=trusty) [12.04](https://ubuntu.com/security/notices?release=precise) --- Open side navigation ## Packages * [openldap](https://ubuntu.com/security/cves?package=openldap) - Lightweight Directory Access Protocol ## Details USN-4634-1 fixed several vulnerabilities in OpenLDAP. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: It was discovered that OpenLDAP incorrectly handled certain malformed inputs. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. ## Update instructions In general, a standard system update will make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 14.04 LTS trusty | [slapd](https://launchpad.net/ubuntu/+source/openldap) –  [2.4.31-1+nmu2ubuntu8.5+esm4](https://launchpad.net/ubuntu/+source/openldap/2.4.31-1+nmu2ubuntu8.5+esm4) | | | | 12.04 precise | [slapd](https://launchpad.net/ubuntu/+source/openldap) –  [2.4.28-1.1ubuntu4.12](https://launchpad.net/ubuntu/+source/openldap/2.4.28-1.1ubuntu4.12) | | | --- ### Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2020-25710](https://ubuntu.com/security/CVE-2020-25710) * [CVE-2020-25709](https://ubuntu.com/security/CVE-2020-25709) ## Related notices * [USN-4634-1](https://ubuntu.com/security/notices/USN-4634-1)