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The root account must be the only account having a UID of 0.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-50747 | OL6-00-000032 | SV-64953r2_rule | Medium |
| Description |
|---|
| An account has root authority if it has a 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. |
| STIG | Date |
|---|---|
| Oracle Linux 6 Security Technical Implementation Guide | 2019-03-20 |
Details
| Check Text ( C-53221r2_chk ) |
|---|
| To list all password file entries for accounts with UID 0, run the following command: # awk -F: '($3 == 0) {print}' /etc/passwd This should print only one line, for the user root. If any account other than root has a UID of 0, this is a finding. |
| Fix Text (F-55541r1_fix) |
|---|
| If any account other than root has a UID of 0, this misconfiguration should be investigated and the accounts other than root should be removed or have their UID changed. |