Installation of desktop items must be disallowed (Restricted Sites zone).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-46595	DTBI127-IE11	SV-59459r1_rule	DCMC-1	Medium

Description
Active Desktop items could contain links to unauthorized websites or other undesirable content. It is prudent to prevent users from installing desktop items from this security zone. Installation of items must have a level of protection based upon the site being accessed. This policy setting allows you to manage whether users can install Active Desktop items from this zone.

STIG	Date
Microsoft Internet Explorer 11 Security Technical Implementation Guide	2015-03-26

Details

Check Text ( C-49761r2_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Allow installation of desktop items' 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 "1800" is REG_DWORD = 3, this is not a finding.

Check Text ( C-49761r2_chk )

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Allow installation of desktop items' 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 "1800" is REG_DWORD = 3, this is not a finding.

Fix Text (F-50365r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page -> Restricted Sites Zone -> 'Allow installation of desktop items' to 'Enabled', and select 'Disable' from the drop-down box.