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Prevent user from disabling the screen lock

An XCCDF Rule

Description

The tmux terminal multiplexer is used to implement automatic session locking. It should not be listed in /etc/shells.

Rationale

Not listing tmux among permitted shells prevents malicious program running as user from lowering security by disabling the screen lock.

ID
xccdf_org.ssgproject.content_rule_no_tmux_in_shells
Severity
Low
References
Updated

Remediation Templates

A Kubernetes Patch

apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
spec:
  config:
    ignition:
      version: 3.1.0