STIGQter: STIG Summary: Red Hat Enterprise Linux 7 Security Technical Implementation Guide Version: 3 Release: 3 Benchmark Date: 23 Apr 2021:

The Red Hat Enterprise Linux operating system must be configured so that all network connections associated with a communication session are terminated at the end of the session or after 15 minutes of inactivity from the user at a command prompt, except to fulfill documented and validated mission requirements.

DISA Rule

SV-204579r646844_rule

Vulnerability Number

V-204579

Group Title

SRG-OS-000163-GPOS-00072

Rule Version

RHEL-07-040160

Severity

CAT II

CCI(s)

• CCI-001133 - The information system terminates 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 - The information system automatically terminates a user session after organization-defined conditions or trigger events requiring session disconnect.

Weight

10

Fix Recommendation

Configure the operating system to terminate all network connections associated with a communications session at the end of the session or after a period of inactivity.

Create a script to enforce the inactivity timeout (for example /etc/profile.d/tmout.sh) such as:

#!/bin/bash

declare -xr TMOUT=900

Check Contents

Verify the operating system terminates all network connections associated with a communications session at the end of the session or based on inactivity.

Check the value of the system inactivity timeout with the following command:

# grep -i tmout /etc/profile.d/*

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 to enforce session termination after inactivity, this is a finding.

Vulnerability Number

V-204579

Documentable

False

Rule Version

RHEL-07-040160

Severity Override Guidance

Verify the operating system terminates all network connections associated with a communications session at the end of the session or based on inactivity.

Check the value of the system inactivity timeout with the following command:

# grep -i tmout /etc/profile.d/*

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 to enforce session termination after inactivity, this is a finding.

Check Content Reference

M

Target Key

2899

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