USN-4078-1: OpenLDAP vulnerabilities

30 July 2019

openldap vulnerabilities

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

  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


Several security issues were fixed in OpenLDAP.

Software Description

  • openldap - OpenLDAP utilities


It was discovered that OpenLDAP incorrectly handled rootDN delegation. A database administrator could use this issue to request authorization as an identity from another database, contrary to expectations. (CVE-2019-13057)

It was discovered that OpenLDAP incorrectly handled SASL authentication and session encryption. After a first SASL bind was completed, it was possible to obtain access by performing simple binds, contrary to expectations. (CVE-2019-13565)

Update instructions

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

Ubuntu 19.04
slapd - 2.4.47+dfsg-3ubuntu2.1
Ubuntu 18.04 LTS
slapd - 2.4.45+dfsg-1ubuntu1.3
Ubuntu 16.04 LTS
slapd - 2.4.42+dfsg-2ubuntu3.6

To update your system, please follow these instructions:

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