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RHEL-10-600010 - RHEL 10 must require a unique superusers name upon booting into single-user and maintenance modes.
Information
Having a nondefault grub superuser username makes password-guessing attacks less effective.Solution
Configure RHEL 10 to have a unique username for the grub superuser account.Edit the "/etc/grub.d/01_users" file and add or modify the following lines with a nondefault username for the superuser account:
set superusers="<accountname>"
export superusers
Once the superuser account has been added, update the "grub.cfg" file by regenerating the GRUB configuration with the following command:
$ sudo grub2-mkconfig -o /boot/grub2/grub.cfg --update-bls-cmdline
Reboot the system:
$ sudo reboot
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_RHEL_10_V1R1_STIG.zip
Item Details
Audit Name: DISA Red Hat Enterprise Linux 10 STIG v1r1
Category: ACCESS CONTROL
References: 800-53|AC-3, CAT|II, CCI|CCI-000213, Rule-ID|SV-281167r1166453_rule, STIG-ID|RHEL-10-600010, Vuln-ID|V-281167
Plugin: Unix
Control ID: 1c94b2f1af10b132bce396b0126190dfb6953f025c42edfb5abf4fd1043d3a9c