RHEL 10 must automatically exit interactive command shell user sessions after 15 minutes of inactivity.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-281295 | RHEL-10-700920 | SV-281295r1166837_rule | CCI-001133 | medium |
| Description | ||||
| Terminating an idle interactive command shell user session within a short time period reduces the window of opportunity for unauthorized personnel to take control of it when left unattended in a virtual terminal or physical console. Satisfies: SRG-OS-000163-GPOS-00072, SRG-OS-000029-GPOS-00010 | ||||
| STIG | Date | |||
| Red Hat Enterprise Linux 10 Security Technical Implementation Guide | 2026-03-11 | |||
Details
Check Text (C-281295r1166837_chk)
Verify RHEL 10 is configured to exit interactive command shell user sessions after 10 minutes of inactivity or less with the following command:
$ sudo grep -i tmout /etc/profile /etc/profile.d/*.sh
/etc/profile.d/tmout.sh:declare -xr TMOUT=600
If "TMOUT" is not set to "600" or less in a script located in the "/etc/'profile.d/" directory, is missing, or is commented out, this is a finding.
Fix Text (F-85761r1166836_fix)
Configure RHEL 10 to exit interactive command shell user sessions after 15 minutes of inactivity.
Add or edit the following line in "/etc/profile.d/tmout.sh":
#!/bin/bash
declare -xr TMOUT=600