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User Account Control must only elevate UIAccess applications that are installed in secure locations.


Overview

Finding ID Version Rule ID IA Controls Severity
V-225066 WN16-SO-000510 SV-225066r569186_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 Windows to only allow applications installed in a secure location on the file system, such as the Program Files or the Windows\System32 folders, to run with elevated privileges.
STIG Date
Microsoft Windows Server 2016 Security Technical Implementation Guide 2021-03-05

Details

Check Text ( C-26757r466100_chk )
UAC requirements are NA for Server Core installations (this is the default installation option for Windows Server 2016 versus Server with Desktop Experience) as well as Nano Server.

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: EnableSecureUIAPaths

Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-26745r466101_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Only elevate UIAccess applications that are installed in secure locations" to "Enabled".