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Font downloads must be disallowed (Restricted Sites zone).


Overview

Finding ID Version Rule ID IA Controls Severity
V-46585 DTBI120-IE11 SV-59449r1_rule DCMC-1 Medium
Description
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.
STIG Date
Microsoft Internet Explorer 11 Security Technical Implementation Guide 2018-06-08

Details

Check Text ( C-49751r2_chk )
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 (F-50355r1_fix)
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.