PostgreSQL must disable network functions, ports, protocols, and services deemed by the organization to be nonsecure, in accordance with the Ports, Protocols, and Services Management (PPSM) guidance.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-261926	CD16-00-008000	SV-261926r1000783_rule		Medium

Description
Use of nonsecure network functions, ports, protocols, and services exposes the system to avoidable threats.

STIG	Date
Crunchy Data Postgres 16 Security Technical Implementation Guide	2024-06-17

Details

Check Text ( C-65780r1000781_chk )
As the database administrator, run the following SQL: $ psql -c "SHOW port" If the currently defined port configuration is deemed prohibited, this is a finding.

Fix Text (F-65688r1000782_fix)
Note: The following instructions use the PGDATA and PGVER environment variables. Refer to APPENDIX-F for instructions on configuring PGDATA and APPENDIX-H for PGVER. To change the listening port of the database, as the database administrator, change the following setting in postgresql.conf: $ sudo su - postgres $ vi $PGDATA/postgresql.conf Change the port parameter to the desired port. Restart the database: $ sudo systemctl restart postgresql-${PGVER?} Note: psql uses the port 5432 by default. This can be changed by specifying the port with psql or by setting the PGPORT environment variable: $ psql -p 5432 -c "SHOW port" $ export PGPORT=5432

Fix Text (F-65688r1000782_fix)

Note: The following instructions use the PGDATA and PGVER environment variables. Refer to APPENDIX-F for instructions on configuring PGDATA and APPENDIX-H for PGVER.

To change the listening port of the database, as the database administrator, change the following setting in postgresql.conf:

$ sudo su - postgres
$ vi $PGDATA/postgresql.conf

Change the port parameter to the desired port.

Restart the database:

$ sudo systemctl restart postgresql-${PGVER?}

Note: psql uses the port 5432 by default. This can be changed by specifying the port with psql or by setting the PGPORT environment variable:

$ psql -p 5432 -c "SHOW port"
$ export PGPORT=5432