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The root account must be the only account having unrestricted access to the system.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-72005 | RHEL-07-020310 | SV-86629r1_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 |
|---|---|
| Red Hat Enterprise Linux 7 Security Technical Implementation Guide | 2017-07-08 |
Details
| Check Text ( C-72237r1_chk ) |
|---|
| Check the system for duplicate UID "0" assignments with the following command: # 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-78357r1_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. |