YUM must remove all software components after updated versions have been installed on TOSS.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-253094	TOSS-04-040500	SV-253094r824954_rule		Low

Description
Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by adversaries. Some information technology products may remove older versions of software automatically from the information system.

STIG	Date
Tri-Lab Operating System Stack (TOSS) 4 Security Technical Implementation Guide	2022-08-29

Details

Check Text ( C-56547r824952_chk )

Verify the operating system removes all software components after updated versions have been installed. Check if YUM is configured to remove unneeded packages with the following command: $ sudo grep -i clean_requirements_on_remove /etc/dnf/dnf.conf clean_requirements_on_remove=True If "clean_requirements_on_remove" is not set to either "1", "True", or "yes", commented out, or is missing from "/etc/dnf/dnf.conf", this is a finding.

Fix Text (F-56497r824953_fix)
Configure the operating system to remove all software components after updated versions have been installed. Set the "clean_requirements_on_remove" option to "True" in the "/etc/dnf/dnf.conf" file: clean_requirements_on_remove=True