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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-271736	OL09-00-002392	SV-271736r1091920_rule		Medium

Description

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

STIG	Date
Oracle Linux 9 Security Technical Implementation Guide	2025-05-08

Details

Check Text (C-75786r1091918_chk)

Verify that OL 9 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-75693r1091919_fix)

Configure OL 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"