RHEL-08-010150 - RHEL 8 operating systems booted with a BIOS must require authentication upon booting into single-user and maintenance modes - superusers

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Information

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.

Solution

Configure the system to require a grub bootloader password for the grub superusers account with the grub2-setpassword command, which creates/overwrites the /boot/grub2/user.cfg file.

Generate an encrypted grub2 password for the grub superusers account with the following command:

$ sudo grub2-setpassword
Enter password:
Confirm password:

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_RHEL_8_V1R7_STIG.zip

Item Details

References: CAT|I, CCI|CCI-000213, Rule-ID|SV-230235r743925_rule, STIG-ID|RHEL-08-010150, Vuln-ID|V-230235

Plugin: Unix

Control ID: ba83675faf94056ef5c00e8dc4339213c7e08de74df8fdbb68e8c7af2f8cdd97