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Unused database components which are integrated in PostgreSQL and cannot be uninstalled must be disabled.


Finding ID Version Rule ID IA Controls Severity
V-214128 PGS9-00-009200 SV-214128r508027_rule Medium
Information systems are capable of providing a wide variety of functions and services. Some of the functions and services, provided by default, may not be necessary to support essential organizational operations (e.g., key missions, functions).   It is detrimental for software products to provide, or install by default, functionality exceeding requirements or mission objectives.   PostgreSQL must adhere to the principles of least functionality by providing only essential capabilities.  Unused, unnecessary PostgreSQL components increase the attack vector for PostgreSQL by introducing additional targets for attack. By minimizing the services and applications installed on the system, the number of potential vulnerabilities is reduced. Components of the system that are unused and cannot be uninstalled must be disabled. The techniques available for disabling components will vary by DBMS product, OS and the nature of the component and may include DBMS configuration settings, OS service settings, OS file access security, and DBMS user/role permissions.
PostgreSQL 9.x Security Technical Implementation Guide 2022-06-13


Check Text ( C-15344r361015_chk )
To list all installed packages, as the system administrator, run the following:

# RHEL/CENT Systems
$ sudo yum list installed | grep postgres

# Debian Systems
$ dpkg --get-selections | grep postgres

If any packages are installed that are not required, this is a finding.
Fix Text (F-15342r361016_fix)
To remove any unneeded executables, as the system administrator, run the following:

# RHEL/CENT Systems
$ sudo yum erase

# Debian Systems
$ sudo apt-get remove