.NET Framework-reliant components signed with Authenticode must be disallowed to run (Restricted Sites Zone).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-46799	DTBI655-IE11	SV-59665r1_rule	ECSC-1	Medium

Description
This policy setting allows you to manage whether .NET Framework-reliant components that are signed with Authenticode can be executed from Internet Explorer. It may be possible for malicious content hosted on a website to take advantage of these components. These components include managed controls referenced from an object tag and managed executables referenced from a link. If you enable this policy setting, Internet Explorer will execute signed managed components. If you select "Prompt" in the drop-down box, Internet Explorer will prompt the user to determine whether to execute signed managed components. If you disable this policy setting, Internet Explorer will not execute signed managed components. If you do not configure this policy setting, Internet Explorer will execute signed managed components.

Description

This policy setting allows you to manage whether .NET Framework-reliant components that are signed with Authenticode can be executed from Internet Explorer. It may be possible for malicious content hosted on a website to take advantage of these components. These components include managed controls referenced from an object tag and managed executables referenced from a link. If you enable this policy setting, Internet Explorer will execute signed managed components. If you select "Prompt" in the drop-down box, Internet Explorer will prompt the user to determine whether to execute signed managed components. If you disable this policy setting, Internet Explorer will not execute signed managed components. If you do not configure this policy setting, Internet Explorer will execute signed managed components.

STIG	Date
Microsoft Internet Explorer 11 Security Technical Implementation Guide	2018-04-02

Details

Check Text ( C-49891r2_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Run .NET Framework-reliant components signed with Authenticode' 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 "2001" is REG_DWORD = 3, this is not a finding.

Check Text ( C-49891r2_chk )

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Run .NET Framework-reliant components signed with Authenticode' 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 "2001" is REG_DWORD = 3, this is not a finding.

Fix Text (F-50549r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Run .NET Framework-reliant components signed with Authenticode' to 'Enabled', and select 'Disable' from the drop-down box.