[USN-5424-2] OpenLDAP vulnerability

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-5424-2
May 19, 2022

openldap vulnerability
==========================================================================

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

- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

OpenLDAP could be made to perform arbitrary modifications to the database.

Software Description:
- openldap: Lightweight Directory Access Protocol

Details:

USN-5424-1 fixed a vulnerability in OpenLDAP. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

 It was discovered that OpenLDAP incorrectly handled certain SQL statements
 within LDAP queries in the experimental back-sql backend. A remote attacker
 could possibly use this issue to perform an SQL injection attack and alter
 the database.

Update instructions:

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

Ubuntu 16.04 ESM:
  slapd                           2.4.42+dfsg-2ubuntu3.13+esm1

Ubuntu 14.04 ESM:
  slapd                           2.4.31-1+nmu2ubuntu8.5+esm5

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

References:
  https://ubuntu.com/security/notices/USN-5424-2
  https://ubuntu.com/security/notices/USN-5424-1
  CVE-2022-29155
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