RHEL 9 must automatically exit interactive command shell user sessions after 15 minutes of inactivity.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-258068 | RHEL-09-412035 | SV-258068r1014872_rule | 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 9 Security Technical Implementation Guide | 2024-12-04 |
Details
| Check Text (C-61809r1014870_chk) |
| Verify RHEL 9 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-61733r1014871_fix) |
| Configure RHEL 9 to exit interactive command shell user sessions after 10 minutes of inactivity. Add or edit the following line in "/etc/profile.d/tmout.sh": #!/bin/bash declare -xr TMOUT=600 |