STIGQter: STIG Summary: Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide Version: 1 Release: 1 Benchmark Date: 26 Mar 2026:

TOSS 5 must automatically exit interactive command shell user sessions after 15 minutes of inactivity.

DISA Rule

SV-282381r1200123_rule

Vulnerability Number

V-282381

Group Title

SRG-OS-000030-GPOS-00011

Rule Version

TOSS-05-000312

Severity

CAT II

CCI(s)

CCI-000057 - The information system initiates a session lock after the organization-defined time period of inactivity.
CCI-001133 - Terminate the network connection associated with a communications session at the end of the session or after an organization-defined time period of inactivity.
CCI-002361 - Automatically terminate a user session after organization-defined conditions or trigger events requiring session disconnect.

Weight

Fix Recommendation

Configure TOSS 5 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=900

Check Contents

Verify TOSS 5 is configured to exit interactive command shell user sessions after 15 minutes of inactivity or less using the following command:

$ sudo grep -i tmout /etc/profile /etc/profile.d/*.sh

/etc/profile.d/tmout.sh:declare -xr TMOUT=900

If "TMOUT" is not set to "900" or less in a script located in the "/etc/'profile.d/" directory, is missing or is commented out, this is a finding.

Vulnerability Number

V-282381

Documentable

False

Rule Version

TOSS-05-000312

Severity Override Guidance

Check Content Reference

Target Key

5738