STIGQter: STIG Summary: Red Hat Enterprise Linux 8 Security Technical Implementation Guide Version: 2 Release: 8 Benchmark Date: 01 Jul 2026:

RHEL 8.7 and higher must terminate idle user sessions.

DISA Rule

SV-257258r1069328_rule

Vulnerability Number

V-257258

Group Title

SRG-OS-000163-GPOS-00072

Rule Version

RHEL-08-020035

Severity

CAT II

CCI(s)

CCI-001133 - Terminate the network connection associated with a communications session at the end of the session or after an organization-defined time period of inactivity.

Weight

Fix Recommendation

Configure RHEL 8 to log out idle sessions after 10 minutes by editing the /etc/systemd/logind.conf file with the following line:

StopIdleSessionSec=600

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

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Note: This requirement applies to RHEL versions 8.7 and higher. If the system is not RHEL version 8.7 or newer, this requirement is not applicable.

Note: For cloud hosted systems where "ClientAliveInterval" (V-244525) is configured, this setting is not applicable.

Verify that RHEL 8 logs out sessions that are idle for 10 minutes with the following command:

$ sudo grep -i ^StopIdleSessionSec /etc/systemd/logind.conf

StopIdleSessionSec=600

If "StopIdleSessionSec" is not configured to "600" seconds, this is a finding.

Vulnerability Number

V-257258

Documentable

False

Rule Version

RHEL-08-020035

Severity Override Guidance

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Target Key

2921