RHEL 8 operating systems booted with United Extensible Firmware Interface (UEFI) must require authentication upon booting into single-user mode and maintenance.
An XCCDF Rule
Description
If the system does not require valid authentication before it boots into single-user or maintenance mode, anyone who invokes single-user or maintenance mode is granted privileged access to all files on the system. GRUB 2 is the default boot loader for RHEL 8 and is designed to require a password to boot into single-user mode or make modifications to the boot menu.
- ID
- SV-230234r1017053_rule
- Version
- RHEL-08-010140
- Severity
- High
- References
- Updated
Remediation Templates
A Manual Procedure
Configure the system to require a grub bootloader password for the grub superusers account with the grub2-setpassword command, which creates/overwrites the /boot/efi/EFI/redhat/user.cfg file.
Generate an encrypted grub2 password for the grub superusers account with the following command:
$ sudo grub2-setpassword
Enter password:
Confirm password: