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Check: WN12-CC-000052

Microsoft Windows Server 2012/2012 R2 Domain Controller STIG: WN12-CC-000052 (in versions v3 r7 through v2 r7)

Title

App notifications on the lock screen must be turned off. (Cat II impact)

Discussion

App notifications that are displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged on user.

Check Content

If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Policies\Microsoft\Windows\System\ Value Name: DisableLockScreenAppNotifications Type: REG_DWORD Value: 1

Fix Text

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> Logon -> "Turn off app notifications on the lock screen" to "Enabled".

Additional Identifiers

Rule ID: SV-226171r794432_rule

Vulnerability ID: V-226171

Group Title: SRG-OS-000095-GPOS-00049

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-000381	The organization configures the information system to provide only essential capabilities.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
CM-7	Least Functionality