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V-271736

CAT II (Medium)

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

Rule ID

SV-271736r1091920_rule

STIG

Oracle Linux 9 Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-000366

Discussion

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

Check Content

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

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"