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


Overview

Finding ID Version Rule ID IA Controls Severity
WN12-SO-000081 WN12-SO-000081 WN12-SO-000081_rule Medium
Description
User Account Control (UAC) is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures whether Windows elevates all applications, or only signed ones.
STIG Date
Microsoft Windows Server 2012 Member Server Security Technical Implementation Guide 2013-07-25

Details

Check Text ( C-WN12-SO-000081_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

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

Value Name: ValidateAdminCodeSignatures

Value Type: REG_DWORD
Value: 0

UAC requirements are NA on Server Core installations.
Fix Text (F-WN12-SO-000081_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".

UAC requirements are NA on Server Core installations.