Legacy filter functionality must be disallowed (Restricted Sites zone).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-34490	DTBI1050	SV-45270r1_rule	ECSC-1	Medium

Description
This policy setting specifies whether Internet Explorer renders legacy visual filters in this zone. If you enable this policy setting, you can control whether or not Internet Explorer renders legacy filters by selecting Enable, or Disable under Options in Group Policy Editor. If you disable, or do not configure this policy setting, users can choose whether or not to render filters in this zone. Users can change this setting on the Security tab of the Internet Options dialog box. Filters are not rendered by default in this zone.

Description

This policy setting specifies whether Internet Explorer renders legacy visual filters in this zone. If you enable this policy setting, you can control whether or not Internet Explorer renders legacy filters by selecting Enable, or Disable under Options in Group Policy Editor. If you disable, or do not configure this policy setting, users can choose whether or not to render filters in this zone. Users can change this setting on the Security tab of the Internet Options dialog box. Filters are not rendered by default in this zone.

STIG	Date
Microsoft Internet Explorer 10 Security Technical Implementation Guide	2016-09-16

Details

Check Text ( C-42617r1_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer-> Internet Control Panel-> Security Page-> Restricted Sites Zone "Render Legacy Filters" 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 270B is REG_DWORD = 3, this is not a finding.

Check Text ( C-42617r1_chk )

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer-> Internet Control Panel-> Security Page-> Restricted Sites Zone "Render Legacy Filters" 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 270B is REG_DWORD = 3, this is not a finding.

Fix Text (F-38666r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer-> Internet Control Panel-> Security Page-> Restricted Sites Zone "Render Legacy Filters" to "Enabled", and select "Disabled".