AlmaLinux OS 9 must automatically exit interactive command shell user sessions after 10 minutes of inactivity.
An XCCDF Rule
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. Declaring $TMOUT as read-only means the user cannot override the setting. Satisfies: SRG-OS-000029-GPOS-00010, SRG-OS-000281-GPOS-00111, SRG-OS-000163-GPOS-00072
- ID
- SV-269108r1049990_rule
- Version
- ALMA-09-001890
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Configure AlmaLinux OS 9 to exit interactive command shell user sessions after 10 minutes of inactivity using the following command:
echo "declare -xr TMOUT=600" > /etc/profile.d/tmout.sh