The Initialize and script ActiveX controls not marked as safe property must be disallowed (Restricted Sites zone).

From Microsoft Internet Explorer 11 Security Technical Implementation Guide

Part of DTBI114-IE11-Initialize and script ActiveX - Restricted Sites

Associated with IA controls: DCMC-1

Associated with: CCI-001170

SV-59441r1_rule The Initialize and script ActiveX controls not marked as safe property must be disallowed (Restricted Sites zone).

Vulnerability discussion

ActiveX controls not marked safe for scripting should not be executed. Although this is not a complete security measure for a control to be marked safe for scripting, if a control is not marked safe, it should not be initialized and executed.

Check content

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Initialize and script ActiveX controls not marked as safe' 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 "1201" is REG_DWORD = 3, this is not a finding.

Fix text

Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Initialize and script ActiveX controls not marked as safe' to 'Enabled', and select 'Disable' from the drop-down box.

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