[USN-4078-1] OpenLDAP vulnerabilities

[Marc Deslauriers]

==========================================================================
Ubuntu Security Notice USN-4078-1
July 30, 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

Summary:

Several security issues were fixed in OpenLDAP.

Software Description:
- openldap: OpenLDAP utilities

Details:

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

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

References:
  https://usn.ubuntu.com/4078-1
  CVE-2019-13057, CVE-2019-13565

Package Information:
  https://launchpad.net/ubuntu/+source/openldap/2.4.47+dfsg-3ubuntu2.1
  https://launchpad.net/ubuntu/+source/openldap/2.4.45+dfsg-1ubuntu1.3
  https://launchpad.net/ubuntu/+source/openldap/2.4.42+dfsg-2ubuntu3.6

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