RHEL 9 must disable the ability of systemd to spawn an interactive boot process.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-257788	RHEL-09-212015	SV-257788r925351_rule		Medium

Description
Using interactive or recovery boot, the console user could disable auditing, firewalls, or other services, weakening system security.

STIG	Date
Red Hat Enterprise Linux 9 Security Technical Implementation Guide	2023-12-01

Details

Check Text ( C-61529r925349_chk )
Verify that GRUB 2 is configured to disable interactive boot. Check that the current GRUB 2 configuration disables the ability of systemd to spawn an interactive boot process with the following command: $ sudo grubby --info=ALL | grep args | grep 'systemd.confirm_spawn' If any output is returned, this is a finding.

Fix Text (F-61453r925350_fix)
Configure RHEL 9 to allocate sufficient audit_backlog_limit to disable the ability of systemd to spawn an interactive boot process with the following command: $ sudo grubby --update-kernel=ALL --remove-args="systemd.confirm_spawn"