OL 8 must terminate idle user sessions.

STIG ID: OL08-00-020035  |  SRG: SRG-OS-000163-GPOS-00072 |  Severity: medium |  CCI: CCI-001133 |  Vulnerability Id: V-257259 | 

Vulnerability Discussion

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.

Check

Verify that OL 8 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

Configure OL 8 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