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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-773 | GEN000880 | SV-37347r2_rule | ECLP-1 IAIA-1 IAIA-2 | Medium |
| Description |
|---|
| If an account has a UID of 0, it has root authority. Multiple accounts with a UID of 0 afford more opportunity for potential intruders to guess a password for a privileged account. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2015-12-03 |
Details
| Check Text ( C-36039r2_chk ) |
|---|
| Check the system for duplicate UID 0 assignments by listing all accounts assigned UID 0. Procedure: # awk -F: '($3 == 0) { print $1 }' /etc/passwd If any accounts other than root are assigned UID 0, this is a finding. |
| Fix Text (F-31283r1_fix) |
|---|
| Remove or change the UID of accounts other than root that have UID 0. |