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RHEL-09-412035 RHEL 9 must automatically exit interactive command shell user sessions after 10 minutes of inactivity.

DISA STIG library V2R10
All changes in this version
first version loaded CAT II

Maps to AC-11, SC-10 via CCI-000057, CCI-001133

Title

RHEL 9 must automatically exit interactive command shell user sessions after 10 minutes of inactivity.

Control

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.

Discussion

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

Related controls

CCI-000057, CCI-001133

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