The operating system must remove all software components after updated versions have been installed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-71987	RHEL-07-020200	SV-86611r1_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
Red Hat Enterprise Linux 7 Security Technical Implementation Guide	2017-12-14

Details

Check Text ( C-72219r1_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: # grep -i clean_requirements_on_remove /etc/yum.conf clean_requirements_on_remove=1 If "clean_requirements_on_remove" is not set to "1", "True", or "yes", or is not set in "/etc/yum.conf", this is a finding.

Fix Text (F-78339r1_fix)
Configure the operating system to remove all software components after updated versions have been installed. Set the "clean_requirements_on_remove" option to "1" in the "/etc/yum.conf" file: clean_requirements_on_remove=1