STIGQter: STIG Summary: Microsoft Windows Server 2016 Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 04 May 2021:

User Account Control must, at a minimum, prompt administrators for consent on the secure desktop.

DISA Rule

SV-225063r569186_rule

Vulnerability Number

V-225063

Group Title

SRG-OS-000134-GPOS-00068

Rule Version

WN16-SO-000480

Severity

CAT II

CCI(s)

CCI-001084 - The information system isolates security functions from nonsecurity functions.

Weight

Fix Recommendation

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode" to "Prompt for consent on the secure desktop".

The more secure option for this setting, "Prompt for credentials on the secure desktop", would also be acceptable.

Check Contents

UAC requirements are NA for Server Core installations (this is 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: ConsentPromptBehaviorAdmin

Value Type: REG_DWORD
Value: 0x00000002 (2) (Prompt for consent on the secure desktop)
0x00000001 (1) (Prompt for credentials on the secure desktop)

User Account Control must, at a minimum, prompt administrators for consent on the secure desktop.

DISA Rule

Vulnerability Number

Group Title

Rule Version

Severity

CCI(s)

Weight

Fix Recommendation

Check Contents

Vulnerability Number

Documentable

Rule Version

Severity Override Guidance

Check Content Reference

Target Key

Comments