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V-230281

CAT III (Low)

YUM must remove all software components after updated versions have been installed on RHEL 8.

Rule ID

SV-230281r958936_rule

STIG

Red Hat Enterprise Linux 8 Security Technical Implementation Guide

Version

V2R7

CCIs

CCI-002617

Discussion

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.

Check Content

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

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