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Check: RHEL-09-214035

RHEL 9 STIG: RHEL-09-214035 (in versions v1 r3 through v1 r1)

Title

RHEL 9 must remove all software components after updated versions have been installed. (Cat III impact)

Discussion

Previous versions of software components that are not removed from the information system after updates have been installed may be exploited by some adversaries.

Check Content

Verify RHEL 9 removes all software components after updated versions have been installed with the following command: $ grep clean /etc/dnf/dnf.conf clean_requirements_on_remove=1 If "clean_requirements_on_remove" is not set to "1", this is a finding.

Fix Text

Configure RHEL 9 to remove all software components after updated versions have been installed. Edit the file /etc/dnf/dnf.conf by adding or editing the following line: clean_requirements_on_remove=1

Additional Identifiers

Rule ID: SV-257824r925459_rule

Vulnerability ID: V-257824

Group Title: SRG-OS-000437-GPOS-00194

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-002617	The organization removes organization-defined software components (e.g., previous versions) after updated versions have been installed.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
SI-2 (6)	Removal Of Previous Versions Of Software / Firmware