STIGQter: STIG Summary: Red Hat Enterprise Linux 8 Security Technical Implementation Guide Version: 1 Release: 2 Benchmark Date: 23 Apr 2021:

RHEL 8 must enable a user session lock until that user re-establishes access using established identification and authentication procedures for command line sessions.

DISA Rule

SV-230348r627750_rule

Vulnerability Number

V-230348

Group Title

SRG-OS-000028-GPOS-00009

Rule Version

RHEL-08-020040

Severity

CAT II

CCI(s)

• CCI-000056 - The information system retains the session lock until the user reestablishes access using established identification and authentication procedures.

Weight

10

Fix Recommendation

Configure the operating system to enable a user to initiate a session lock via tmux.

Install the "tmux" package, if it is not already installed, by running the following command:

$ sudo yum install tmux

Once installed, create a global configuration file "/etc/tmux.conf" and add the following line:

set -g lock-command vlock

Check Contents

Verify the operating system enables the user to initiate a session lock on command.

Verify RHEL 8 has the "tmux" package installed, by running the following command:

$ sudo yum list installed tmux

tmux.x86.64 2.7-1.el8 @repository

If "tmux" is not installed, this is a finding.

Next verify that the lock-command is set in the global settings of tmux with the following command:

$ sudo grep -i lock-command /etc/tmux.conf

set -g lock-command vlock

If the "lock-command" is not set in the global settings to call "vlock", this is a finding.

Vulnerability Number

V-230348

Documentable

False

Rule Version

RHEL-08-020040

Severity Override Guidance

Verify the operating system enables the user to initiate a session lock on command.

Verify RHEL 8 has the "tmux" package installed, by running the following command:

$ sudo yum list installed tmux

tmux.x86.64 2.7-1.el8 @repository

If "tmux" is not installed, this is a finding.

Next verify that the lock-command is set in the global settings of tmux with the following command:

$ sudo grep -i lock-command /etc/tmux.conf

set -g lock-command vlock

If the "lock-command" is not set in the global settings to call "vlock", this is a finding.

Check Content Reference

M

Target Key

2921

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