OL 9 /boot/grub2/grub.cfg file must be owned by root.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-271793	OL09-00-002531	SV-271793r1092605_rule		Medium

Description

The "/boot/grub2/grub.cfg" file stores sensitive system configuration. Protection of this file is critical for system security.

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

Details

Check Text (C-75843r1092089_chk)

Verify that OL 9 configures ownership of the "/boot/grub2/grub.cfg" file with the following command:

$ sudo stat -c "%U %n" /boot/grub2/grub.cfg
root /boot/grub2/grub.cfg

If "/boot/grub2/grub.cfg" file does not have an owner of "root", this is a finding.

Fix Text (F-75750r1092090_fix)

Change the owner of the file /boot/grub2/grub.cfg to root by running the following command:

$ sudo chown root /boot/grub2/grub.cfg