Optional component installation and component repair must be prevented from using Windows Update.

From Windows Server 2012/2012 R2 Domain Controller Security Technical Implementation Guide

Associated with IA controls: ECSC-1

Associated with: CCI-001812

SV-51606r1_rule Optional component installation and component repair must be prevented from using Windows Update.

Vulnerability discussion

Uncontrolled system updates can introduce issues to a system. Obtaining update components from an outside source may also potentially provide sensitive information outside of the enterprise. Optional component installation or repair must be obtained from an internal source.

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\Microsoft\Windows\CurrentVersion\Policies\Servicing\ Value Name: UseWindowsUpdate Type: REG_DWORD Value: 2

Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> System -> "Specify settings for optional component installation and component repair" to "Enabled" and with "Never attempt to download payload from Windows Update" selected.

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