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Check: WN19-CC-000420

Microsoft Windows Server 2019 STIG: WN19-CC-000420 (in versions v3 r2 through v1 r1)

Title

Windows Server 2019 must prevent users from changing installation options. (Cat II impact)

Discussion

Installation options for applications are typically controlled by administrators. This setting prevents users from changing installation options that may bypass security features.

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: EnableUserControl Type: REG_DWORD Value: 0x00000000 (0)

Fix Text

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Windows Installer >> "Allow user control over installs" to "Disabled".

Additional Identifiers

Rule ID: SV-205801r1016463_rule

Vulnerability ID: V-205801

Group Title: SRG-OS-000362-GPOS-00149

Expert Comments

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CCIs

CCIs tied to check.

Number	Definition
CCI-001812	The information system prohibits user installation of software without explicit privileged status.
CCI-003980	Allow user installation of software only with explicit privileged status.

Controls

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

Number	Title
CM-11(2)	Prohibit Installation Without Privileged Status