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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-15561	DTBI655	SV-40678r1_rule	ECSC-1	Medium

Description
This policy setting allows you to manage whether .NET Framework components that are signed with Authenticode can be executed from Internet Explorer. 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 components that are signed with Authenticode can be executed from Internet Explorer. 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
Internet Explorer 9 Security Technical Implementation Guide	2015-06-30

Details

Check Text ( C-39408r1_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-39408r1_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-34532r1_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.