Nonadministrators must be prevented from applying vendor-signed updates.

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

Part of Windows Installer – Vendor Signed Updates

Associated with: CCI-001812

SV-53065r1_rule Nonadministrators must be prevented from applying vendor-signed updates.

Vulnerability discussion

Uncontrolled system updates can introduce issues to a system. This setting will prevent users from applying vendor-signed updates (though they may be from a trusted 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\Policies\Microsoft\Windows\Installer\ Value Name: DisableLUAPatching Type: REG_DWORD Value: 1

Fix text

Configure the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Windows Installer -> "Prohibit non-administrators from applying vendor signed updates" to "Enabled".

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