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RHEL-09-411100 The root account must be the only account having unrestricted access to RHEL 9 system.

DISA STIG library V2R10
All changes in this version
first version loaded CAT I

Maps to CM-6 via CCI-000366

Title

The root account must be the only account having unrestricted access to RHEL 9 system.

Control

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.

Discussion

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.

Related controls

CCI-000366

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, 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.