PostgreSQL must generate audit records for all direct access to the database(s).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-73069	PGS9-00-012700	SV-87721r2_rule		Medium

Description
In this context, direct access is any query, command, or call to the DBMS that comes from any source other than the application(s) that it supports. Examples would be the command line or a database management utility program. The intent is to capture all activity from administrative and non-standard sources.

STIG	Date
PostgreSQL 9.x Security Technical Implementation Guide	2017-12-27

Details

Check Text ( C-73203r1_chk )
As the database administrator, verify pgaudit is enabled by running the following SQL: $ sudo su - postgres $ psql -c "SHOW shared_preload_libraries" If the output does not contain "pgaudit", this is a finding. Verify that connections and disconnections are being logged by running the following SQL: $ sudo su - postgres $ psql -c "SHOW log_connections" $ psql -c "SHOW log_disconnections" If the output does not contain "on", this is a finding.

Check Text ( C-73203r1_chk )

As the database administrator, verify pgaudit is enabled by running the following SQL:

$ sudo su - postgres
$ psql -c "SHOW shared_preload_libraries"

If the output does not contain "pgaudit", this is a finding.

Verify that connections and disconnections are being logged by running the following SQL:

$ sudo su - postgres
$ psql -c "SHOW log_connections"
$ psql -c "SHOW log_disconnections"

If the output does not contain "on", this is a finding.

Fix Text (F-79515r2_fix)
Note: The following instructions use the PGDATA and PGVER environment variables. See supplementary content APPENDIX-F for instructions on configuring PGDATA and APPENDIX-H for PGVER. To ensure that logging is enabled, review supplementary content APPENDIX-C for instructions on enabling logging. Using pgaudit PostgreSQL can be configured to audit these requests. See supplementary content APPENDIX-B for documentation on installing pgaudit. With pgaudit installed the following configurations should be made: $ sudo su - postgres $ vi ${PGDATA?}/postgresql.conf Add the following parameters (or edit existing parameters): pgaudit.log='ddl, role, read, write' log_connections='on' log_disconnections='on' Now, as the system administrator, reload the server with the new configuration: # SYSTEMD SERVER ONLY $ sudo systemctl reload postgresql-${PGVER?} # INITD SERVER ONLY $ sudo service postgresql-${PGVER?} reload

Fix Text (F-79515r2_fix)

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

To ensure that logging is enabled, review supplementary content APPENDIX-C for instructions on enabling logging.

Using pgaudit PostgreSQL can be configured to audit these requests. See supplementary content APPENDIX-B for documentation on installing pgaudit.

With pgaudit installed the following configurations should be made:

$ sudo su - postgres
$ vi ${PGDATA?}/postgresql.conf

Add the following parameters (or edit existing parameters):

pgaudit.log='ddl, role, read, write'
log_connections='on'
log_disconnections='on'

Now, as the system administrator, reload the server with the new configuration:

# SYSTEMD SERVER ONLY
$ sudo systemctl reload postgresql-${PGVER?}

# INITD SERVER ONLY
$ sudo service postgresql-${PGVER?} reload