Title

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

Discussion

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).

Check Content

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

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.

Additional Identifiers

Rule ID: SV-223021r879534_rule

Vulnerability ID: V-223021

Group Title: SRG-APP-000039

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.