Accessing data sources across domains must be disallowed (Restricted Sites zone).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-46589	DTBI122-IE11	SV-59453r1_rule	DCMC-1	Medium

Description
The ability to access data zones across domains could cause the user to unknowingly access content hosted on an unauthorized server. This policy setting allows you to manage whether Internet Explorer can access data from another security zone using the Microsoft XML Parser (MSXML) or ActiveX Data Objects (ADO).

STIG	Date
Microsoft Internet Explorer 11 Security Technical Implementation Guide	2015-06-30

Details

Check Text ( C-49755r2_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Access data sources across domains' 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 "1406" is REG_DWORD = 3, this is not a finding.

Check Text ( C-49755r2_chk )

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Access data sources across domains' 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 "1406" is REG_DWORD = 3, this is not a finding.

Fix Text (F-50359r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Access data sources across domains' to 'Enabled', and select 'Disable' from the drop-down box.