PostgreSQL must enforce access restrictions associated with changes to the configuration of PostgreSQL or database(s).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-73017	PGS9-00-009600	SV-87669r2_rule		Medium

Description
Failure to provide logical access restrictions associated with changes to configuration may have significant effects on the overall security of the system. When dealing with access restrictions pertaining to change control, it should be noted that any changes to the hardware, software, and/or firmware components of the information system can potentially have significant effects on the overall security of the system. Accordingly, only qualified and authorized individuals should be allowed to obtain access to system components for the purposes of initiating changes, including upgrades and modifications.

Description

Failure to provide logical access restrictions associated with changes to configuration may have significant effects on the overall security of the system. When dealing with access restrictions pertaining to change control, it should be noted that any changes to the hardware, software, and/or firmware components of the information system can potentially have significant effects on the overall security of the system. Accordingly, only qualified and authorized individuals should be allowed to obtain access to system components for the purposes of initiating changes, including upgrades and modifications.

STIG	Date
PostgreSQL 9.x Security Technical Implementation Guide	2018-02-27

Details

Check Text ( C-73149r1_chk )
To list all the permissions of individual roles, as the database administrator (shown here as "postgres"), run the following SQL: $ sudo su - postgres $ psql -c "\du If any role has SUPERUSER that should not, this is a finding. Next, list all the permissions of databases and schemas by running the following SQL: $ sudo su - postgres $ psql -c "\l" $ psql -c "\dn+" If any database or schema has update ("W") or create ("C") privileges and should not, this is a finding.

Check Text ( C-73149r1_chk )

To list all the permissions of individual roles, as the database administrator (shown here as "postgres"), run the following SQL:

$ sudo su - postgres
$ psql -c "\du

If any role has SUPERUSER that should not, this is a finding.

Next, list all the permissions of databases and schemas by running the following SQL:

$ sudo su - postgres
$ psql -c "\l"
$ psql -c "\dn+"

If any database or schema has update ("W") or create ("C") privileges and should not, this is a finding.

Fix Text (F-79463r2_fix)

Configure PostgreSQL to enforce access restrictions associated with changes to the configuration of PostgreSQL or database(s).

Use ALTER ROLE to remove accesses from roles:

$ psql -c "ALTER ROLE NOSUPERUSER"

Use REVOKE to remove privileges from databases and schemas:

$ psql -c "REVOKE ALL PRIVILEGES ON FROM "