RHEL 10 must automatically exit interactive command shell user sessions after 15 minutes of inactivity.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-281295 | SRG-OS-000163-GPOS-00072 | RHEL-10-700920 | SV-281295r1166837_rule | 2026-03-11 | 1 |
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
ℹ️ Check
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
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