Windows will elevate all applications in User Account Control, not just signed ones.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-16008	3.140	SV-32439r1_rule	ECCD-1 ECCD-2	Medium

Description
This check verifies that Windows elevates all applications, not just signed ones.

STIG	Date
Windows Server 2008 R2 Member Server Security Technical Implementation Guide	2015-06-16

Details

Check Text ( C-32853r1_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: Only elevate executables that are signed and validated” 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: ValidateAdminCodeSignatures Value Type: REG_DWORD Value: 0

Check Text ( C-32853r1_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: Only elevate executables that are signed and validated” 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: ValidateAdminCodeSignatures

Value Type: REG_DWORD
Value: 0

Fix Text (F-28963r1_fix)
Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “User Account Control: Only elevate executables that are signed and validated” to “Disabled”.