A PostgreSQL security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, 22.04 LTS, 22.10, and 23.04.

USN-6104-1: PostgreSQL vulnerabilities

==========================================================================
Ubuntu Security Notice USN-6104-1
May 24, 2023

postgresql-10, postgresql-12, postgresql-14, postgresql-15 vulnerabilities
==========================================================================

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

- Ubuntu 23.04
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in PostgreSQL.

Software Description:
- postgresql-15: Object-relational SQL database
- postgresql-14: Object-relational SQL database
- postgresql-12: Object-relational SQL database
- postgresql-10: Object-relational SQL database

Details:

Alexander Lakhin discovered that PostgreSQL incorrectly handled certain
CREATE privileges. An authenticated user could possibly use this issue to
execute arbitrary code as the bootstrap supervisor. (CVE-2023-2454)

Wolfgang Walther discovered that PostgreSQL incorrectly handled certain row
security policies. An authenticated user could possibly use this issue to
complete otherwise forbidden reads and modifications. (CVE-2023-2455)

Update instructions:

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

Ubuntu 23.04:
postgresql-15 15.3-0ubuntu0.23.04.1
postgresql-client-15 15.3-0ubuntu0.23.04.1

Ubuntu 22.10:
postgresql-14 14.8-0ubuntu0.22.10.1
postgresql-client-14 14.8-0ubuntu0.22.10.1

Ubuntu 22.04 LTS:
postgresql-14 14.8-0ubuntu0.22.04.1
postgresql-client-14 14.8-0ubuntu0.22.04.1

Ubuntu 20.04 LTS:
postgresql-12 12.15-0ubuntu0.20.04.1
postgresql-client-12 12.15-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
postgresql-10 10.23-0ubuntu0.18.04.2
postgresql-client-10 10.23-0ubuntu0.18.04.2

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart PostgreSQL to
make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6104-1
CVE-2023-2454, CVE-2023-2455

Package Information:
https://launchpad.net/ubuntu/+source/postgresql-15/15.3-0ubuntu0.23.04.1
https://launchpad.net/ubuntu/+source/postgresql-14/14.8-0ubuntu0.22.10.1
https://launchpad.net/ubuntu/+source/postgresql-14/14.8-0ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/postgresql-12/12.15-0ubuntu0.20.04.1
https://launchpad.net/ubuntu/+source/postgresql-10/10.23-0ubuntu0.18.04.2