Font downloads must be disallowed (Restricted Sites zone).

From Microsoft Internet Explorer 11 Security Technical Implementation Guide

Part of DTBI120-IE11-Font download control - Restricted Sites

Associated with IA controls: DCMC-1

Associated with: CCI-000381

SV-59449r1_rule Font downloads must be disallowed (Restricted Sites zone).

Vulnerability discussion

It is possible that a font could include malformed data that would cause Internet Explorer to crash when it attempts to load and render the font. Downloads of fonts can sometimes contain malicious code. Files should not be downloaded from restricted sites. This policy setting allows you to manage whether pages of the zone may download HTML fonts.

Check content

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Allow font downloads' 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 "1604" 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 font downloads' to 'Enabled', and select 'Disable' from the drop-down box.

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.