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USN-4634-2: OpenLDAP vulnerabilities

23 November 2020

OpenLDAP could be made to crash if it received specially crafted network traffic.



  • openldap - Lightweight Directory Access Protocol


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

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.

Related notices

  • USN-4634-1: ldap-utils, openldap, libldap-2.4-2, slapd, libldap-common, slapi-dev, libldap2-dev, slapd-smbk5pwd, slapd-contrib