ActiveX controls and plug-ins must be disallowed (Restricted Sites zone).

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-223058	SRG-APP-000516	DTBI115-IE11	SV-223058r879887_rule	2023-12-01	2

Description
This policy setting allows you to manage whether ActiveX controls and plug-ins can be run on pages from the specified zone. ActiveX controls not marked as safe should not be executed. If you enable this policy setting, controls and plug-ins can run without user intervention. If you disable this policy setting, controls and plug-ins are prevented from running.

ℹ️ Check
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Run ActiveX controls and plugins' must be 'Enabled', and 'Disable' selected from the drop-down box. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4 Criteria: If the value "1200" is REG_DWORD = 3, this is not a finding.

ℹ️ Check

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Run ActiveX controls and plugins' must be 'Enabled', and 'Disable' selected from the drop-down box. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4 Criteria: If the value "1200" is REG_DWORD = 3, this is not a finding.

✔️ Fix
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Run ActiveX controls and plugins' to 'Enabled', and select 'Disable' from the drop-down box.