SUSE Linux Enterprise Server 15 STIG Version Comparison

There are 7 differences between versions v2 r1 (July 24, 2024) (the "left" version) and v2 r3 (Jan. 30, 2025) (the "right" version).

Check SLES-15-010130 was changed between these two versions. Green, underlined text was added, red, struck-out text was removed.

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Title

The SUSE operating system must initiate a session lock after a 15-minute 10-minute period of inactivity.

Check Content

Verify the SUSE operating system must initiate a session logout after a 15-minute 10-minute period of inactivity for all connection types. Check the proper script exists to kill an idle session after a 15-minute 10-minute period of inactivity with the following command: > cat /etc/profile.d/autologout.sh TMOUT=900 readonly /etc/profile.d/autologout.sh TMOUT=600 readonly TMOUT export TMOUT If the file "/etc/profile.d/autologout.sh" does not exist or the output from the function call is not the same, this is a finding.

Discussion

A session time-out lock is a temporary action taken when a user stops work and moves away from the immediate physical vicinity of the information system but does not log out because of the temporary nature of the absence. Rather than relying on the users to manually lock their SUSE operating system session prior to vacating the vicinity, the SUSE operating system needs to be able to identify when a user's session has idled and take action to initiate the session lock. The session lock is implemented at the point where session activity can be determined and/or controlled.

Fix

Configure the SUSE operating system to initiate a session lock after a 15-minute 10-minute period of inactivity by modifying or creating (if it does not already exist) the "/etc/profile.d/autologout.sh" file and add the following lines to it: TMOUT=900 readonly it: TMOUT=600 readonly TMOUT export TMOUT Set the proper permissions for the "/etc/profile.d/autologout.sh" file with the following command: > sudo chmod +x /etc/profile.d/autologout.sh