UIAccess applications will not be allowed to prompt for elevation without using the secure desktop.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-15991	3.138	SV-32438r1_rule		Medium

Description
This check verifies whether User Interface Accessibility programs can automatically disable the secure desktop for elevation prompts for a standard user.

STIG	Date
Windows Server 2008 R2 Member Server Security Technical Implementation Guide	2018-03-07

Details

Check Text ( C-32781r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for “User Account Control: Allow UIAccess applications to prompt for elevation without using the secure desktop” is not set to “Disabled”, then this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \Software\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: EnableUIADesktopToggle Value Type: REG_DWORD Value: 0

Check Text ( C-32781r1_chk )

Analyze the system using the Security Configuration and Analysis snap-in.
Expand the Security Configuration and Analysis tree view.
Navigate to Local Policies -> Security Options.

If the value for “User Account Control: Allow UIAccess applications to prompt for elevation without using the secure desktop” is not set to “Disabled”, then this is a finding.

The policy referenced configures the following registry value:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \Software\Microsoft\Windows\CurrentVersion\Policies\System\

Value Name: EnableUIADesktopToggle

Value Type: REG_DWORD
Value: 0

Fix Text (F-28854r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “User Account Control: Allow UIAccess applications to prompt for elevation without using the secure desktop” to “Disabled”.