Puppet Class: cis_security_hardening::rules::gdm_screensaver

Defined in:
manifests/rules/gdm_screensaver.pp

Summary

Ensure GNOME Screensaver period of inactivity is configured

Overview

The operating system must initiate a screensaver after a 15-minute period of inactivity for graphical user interfaces.

Rationale: A session time-out lock with the screensaver 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 user to manually lock their operating system session prior to vacating the vicinity, operating systems need to be able to identify when a user’s session has idled and take action to initiate the session lock.

The screensaver is implemented at the point where session activity can be determined and/or controlled.

Examples:

class { 'cis_security_hardening::rules::gdm_screensaver':
  enforce => true,
  timeout => 900,
}

Parameters:

  • enforce (Boolean) (defaults to: false) —

    Enforce the rule.

  • timeout (Integer) (defaults to: 900) —

    The idle time.

  • lockdelay (Integer) (defaults to: 5) 


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# File 'manifests/rules/gdm_screensaver.pp', line 28

class cis_security_hardening::rules::gdm_screensaver (
  Boolean $enforce   = false,
  Integer $timeout   = 900,
  Integer $lockdelay = 5,
) {
  $gnome_gdm = fact('cis_security_hardening.gnome_gdm')
  if  $enforce and $gnome_gdm != undef and $gnome_gdm {
    exec { 'gdm screensaver enabled':
      command => "gsettings set org.gnome.desktop.session idle-delay \"unit32 ${timeout}\"", #lint:ignore:security_class_or_define_parameter_in_exec lint:ignore:140chars
      path    => ['/bin', '/usr/bin'],
      unless  => "test \"$(gsettings get org.gnome.desktop.session idle-delay)\" = \"unit32 ${timeout}\"",
    }

    exec { 'gdm screensaver ilde activates':
      command => 'gsettings set org.gnome.desktop.screensaver idle-activation-enabled "true"',
      path    => ['/bin', '/usr/bin'],
      unless  => 'test "$(gsettings get org.gnome.desktop.session idle-delayidle-activation-enabled)" = "true"',
    }

    exec { 'gdm screensaver locktime':
      command => "gsettings set org.gnome.desktop.screensaver lock-delay \"unit32 ${lockdelay}\"", #lint:ignore:security_class_or_define_parameter_in_exec lint:ignore:140chars
      path    => ['/bin', '/usr/bin'],
      unless  => "test \"$(gsettings get org.gnome.desktop.screensaver lock-delay)\" = \"unit32 ${lockdelay}\"",
    }
  }
}