RHEL 9 must terminate idle user sessions.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258077 | RHEL-09-412080 | SV-258077r1014874_rule | Medium |
| Description |
| Terminating an idle session within a short time period reduces the window of opportunity for unauthorized personnel to take control of a management session enabled on the console or console port that has been left unattended. |
| STIG | Date |
| Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-12-04 |
Details
| Check Text (C-61818r926216_chk) |
| Verify that RHEL 9 logs out sessions that are idle for 15 minutes with the following command: $ sudo grep -i ^StopIdleSessionSec /etc/systemd/logind.conf StopIdleSessionSec=900 If "StopIdleSessionSec" is not configured to "900" seconds, this is a finding. |
| Fix Text (F-61742r1014873_fix) |
| Configure RHEL 9 to log out idle sessions by editing the /etc/systemd/logind.conf file with the following line: StopIdleSessionSec=900 The "logind" service must be restarted for the changes to take effect. To restart the "logind" service, run the following command: $ sudo systemctl restart systemd-logind |