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

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-6250	DTBI032	SV-45065r1_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. Access to data sources across multiple domains must be controlled based upon the site being browsed. 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).

Description

The ability to access data zones across domains could cause the user to unknowingly access content hosted on an unauthorized server. Access to data sources across multiple domains must be controlled based upon the site being browsed. 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 10 Security Technical Implementation Guide	2013-04-01

Details

Check Text ( C-42438r1_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Internet 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\3 Criteria: If the value 1406 is REG_DWORD = 3, this is not a finding.

Check Text ( C-42438r1_chk )

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Internet 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\3

Criteria: If the value 1406 is REG_DWORD = 3, this is not a finding.

Fix Text (F-38473r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Internet Zone -> "Access data sources across domains" to "Enabled", and select "Disable" from the drop-down box.