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V-261926

CAT II (Medium)

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.

Rule ID

SV-261926r1000783_rule

STIG

Crunchy Data Postgres 16 Security Technical Implementation Guide

Version

V1R2

CCIs

CCI-001762

Discussion

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

Check Content

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

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