Rule ID
SV-269138r1137691_rule
Version
V1R6
CCIs
Having a nondefault grub superuser username makes password-guessing attacks less effective.
Verify the boot loader superuser account has been set with the following command:
$ grep -A1 "superusers" /etc/grub2.cfg
set superusers="superman"
export superusers
password_pbkdf2 superman ${GRUB2_PASSWORD}
In this example "superman" is the actual account name, changed from the default "root".
If superusers contains easily guessable usernames, this is a finding.Configure AlmaLinux OS 9 to have a unique username for the grub superuser account using the following commands: $ sed -ri 's/root/superman/' /etc/grub.d/01_users $ grub2-mkconfig -o /boot/grub2/grub.cfg