RHEL 10 must enforce "root" ownership of the "/boot/grub2/grub.cfg" file.

STIG ID: RHEL-10-400350  |  SRG: SRG-OS-000080-GPOS-00048 |  Severity: medium (CAT II)  |  CCI: CCI-000213 |  Vulnerability Id: V-281087

Vulnerability Discussion

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

Check

Verify RHEL 10 enforces 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 the "/boot/grub2/grub.cfg" file does not have an owner of "root", this is a finding.

Fix

Configure RHEL 10 to enforce ownership of the "/boot/grub2/grub.cfg" file.

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

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