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The system must prevent the root account from logging in from serial consoles.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-208805 | OL6-00-000028 | SV-208805r505921_rule | Low |
| Description |
|---|
| Preventing direct root login to serial port interfaces helps ensure accountability for actions taken on the systems using the root account. |
| STIG | Date |
|---|---|
| Oracle Linux 6 Security Technical Implementation Guide | 2020-09-10 |
Details
| Check Text ( C-9058r357395_chk ) |
|---|
| To check for serial port entries which permit root login, run the following command: # grep '^ttyS[0-9]' /etc/securetty If any output is returned, then root login over serial ports is permitted. If root login over serial ports is permitted, this is a finding. |
| Fix Text (F-9058r357396_fix) |
|---|
| To restrict root logins on serial ports, ensure lines of this form do not appear in "/etc/securetty": ttyS0 ttyS1 Note: Serial port entries are not limited to those listed above. Any lines starting with "ttyS" followed by numerals should be removed. |