RHEL 9 must terminate idle user sessions.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-258077 | SRG-OS-000163-GPOS-00072 | RHEL-09-412080 | SV-258077r1155659_rule | 2025-11-24 | 2 |
| 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. |
| ℹ️ Check |
|---|
| Verify RHEL 9 logs out sessions that are idle for 10 minutes with the following command: $ systemd-analyze cat-config systemd/logind.conf | grep StopIdleSessionSec #StopIdleSessionSec=infinity StopIdleSessionSec=600 If "StopIdleSessionSec" is not configured to "600" seconds, this is a finding. |
| ✔️ Fix |
|---|
| Configure RHEL 9 to log out idle sessions. Create the directory if necessary: $ mkdir -p /etc/systemd/logind.conf.d/ Create a *.conf file in /etc/systemd/logind.conf.d/ with the following content: [Login] StopIdleSessionSec=600 KillUserProcesses=no Restart systemd-logind: $ systemctl restart systemd-logind |