Title

Navigating windows and frames across different domains must be disallowed (Restricted Sites zone). (Cat II impact)

Discussion

Frames navigating across different domains are a security concern, because the user may think they are accessing pages on one site while they are actually accessing pages on another site. It is possible that a website hosting malicious content could use this feature in a manner similar to cross site scripting. This policy setting allows you to manage the opening of sub-frames and access of applications across different domains.

Check Content

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Navigate windows and frames across different 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 1607 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 -> Restricted Sites Zone -> "Navigate windows and frames across different domains" to "Enabled", and select "Disable" from the drop-down box.

Additional Identifiers

Rule ID: SV-45281r1_rule

Vulnerability ID: V-6304

Group Title: DTBI129 - Navigating across domains - Restricted

Expert Comments

CCIs tied to check.

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