The root account must be the only account having unrestricted access to an AlmaLinux OS 9 system.

Severity
Group ID
Group Title
Version
Rule ID
Date
STIG Version
mediumV-269291SRG-OS-000480-GPOS-00227ALMA-09-023890SV-269291r1050173_rule2025-02-201
Description
An account has root authority if it has a user identifier (UID) of "0". Multiple accounts with a UID of "0" afford more opportunity for potential intruders to guess a password for a privileged account. Proper configuration of sudo is recommended to afford multiple system administrators access to root privileges in an accountable manner.
ℹ️ Check
Verify that only the "root" account has a UID "0" assignment with the following command: $ awk -F: '$3 == 0 {print $1}' /etc/passwd root If any accounts other than "root" have a UID of "0", this is a finding.
✔️ Fix
Change the UID of any account on the system, other than root which has a UID of "0". If the account is associated with system commands or applications, the UID should be changed to one greater than "0" but less than "1000". Otherwise, assign a UID of greater than "1000" that has not already been assigned.