Title

Scripting of Internet Explorer WebBrowser control must be disallowed (Restricted Sites zone). (Cat II impact)

Discussion

This policy setting controls whether a page may control embedded WebBrowser control via script. Scripted code hosted on sites located in this zone is more likely to contain malicious code. If you enable this policy setting, script access to the WebBrowser control is allowed. If you disable this policy setting, script access to the WebBrowser control is not allowed. If you do not configure this policy setting, script access to the WebBrowser control can be enabled or disabled by the user. By default, script access to the WebBrowser control is only allowed in the Local Machine and Intranet Zones.

Check Content

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> "Allow scripting of Internet Explorer WebBrowser controls" 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 1206 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 -> "Allow scripting of Internet Explorer WebBrowser controls" to "Enabled", and select "Disable" from the drop-down box.

Additional Identifiers

Rule ID: SV-45291r1_rule

Vulnerability ID: V-22157

Group Title: DTBI850 - Browser scripting control - Restricted

Expert Comments

CCIs tied to check.

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