The root account must be the only account having unrestricted access to the OL 8 system.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-248874	OL08-00-040200	SV-248874r780188_rule		High

Description
If an account other than root also has a User Identifier (UID) of "0", it has root authority, giving that account unrestricted access to the entire operating system. Multiple accounts with a UID of "0" afford an opportunity for potential intruders to guess a password for a privileged account.

STIG	Date
Oracle Linux 8 Security Technical Implementation Guide	2022-12-06

Details

Check Text ( C-52308r780186_chk )
Check the system for duplicate UID "0" assignments with the following command: $ sudo awk -F: '$3 == 0 {print $1}' /etc/passwd If any accounts other than root have a UID of "0", this is a finding.

Fix Text (F-52262r780187_fix)
Change the UID of any account on the system, other than root, that has a UID of "0". If the account is associated with system commands or applications, change the UID to one greater than "0" but less than "1000". Otherwise, assign a UID of greater than "1000" that has not already been assigned.