Windows Server 2019 must disable the Windows Installer Always install with elevated privileges option.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-205802	WN19-CC-000430	SV-205802r569188_rule		High

Description
Standard user accounts must not be granted elevated privileges. Enabling Windows Installer to elevate privileges when installing applications can allow malicious persons and applications to gain full control of a system.

STIG	Date
Microsoft Windows Server 2019 Security Technical Implementation Guide	2021-03-05

Details

Check Text ( C-6067r355768_chk )
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: AlwaysInstallElevated Type: REG_DWORD Value: 0x00000000 (0)

Fix Text (F-6067r355769_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> "Always install with elevated privileges" to "Disabled".