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USN-4622-1: OpenLDAP vulnerability

9 November 2020

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



  • openldap - Lightweight Directory Access Protocol


It was discovered that OpenLDAP incorrectly handled certain network
packets. A remote attacker could use this issue to cause OpenLDAP to crash,
resulting in a denial of service, or possibly execute arbitrary code.

Update instructions

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

Ubuntu 20.10
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

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


Related notices

  • USN-4622-2: libldap-2.4-2, ldap-utils, libldap2-dev, slapd, slapd-smbk5pwd, openldap