==========================================================================
Ubuntu Security Notice USN-6656-2
March 12, 2024
postgresql-9.5 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
Summary:
PostgreSQL could be made to run arbitrary SQL.
Software Description:
- postgresql-9.5: Object-relational SQL database
Details:
USN-6656-1 fixed several vulnerabilities in PostgreSQL. This update provides
the corresponding updates for Ubuntu 16.04 LTS
Original advisory details:
  It was discovered that PostgreSQL incorrectly handled dropping privileges
  when handling REFRESH MATERIALIZED VIEW CONCURRENTLY commands. If a user or
  automatic system were tricked into running a specially crafted command, a
  remote attacker could possibly use this issue to execute arbitrary SQL
  functions.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS (Available with Ubuntu Pro):
   postgresql-9.5                  9.5.25-0ubuntu0.16.04.1+esm7
   postgresql-client-9.5           9.5.25-0ubuntu0.16.04.1+esm7
After a standard system update you need to restart PostgreSQL to make all
the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6656-2
   https://ubuntu.com/security/notices/USN-6656-1
   CVE-2024-0985