USN-4352-2: OpenLDAP vulnerability

6 May 2020

openldap vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 ESM
  • Ubuntu 12.04 ESM


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

Software Description

  • openldap - Lightweight Directory Access Protocol


USN-4352-1 fixed a vulnerability 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 queries. A remote attacker could possibly use this issue to cause OpenLDAP to consume resources, 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 ESM
slapd - 2.4.31-1+nmu2ubuntu8.5+esm2
Ubuntu 12.04 ESM
slapd - 2.4.28-1.1ubuntu4.10

To update your system, please follow these instructions:

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