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Windows Server 2019 administrator accounts must not be enumerated during elevation.


Overview

Finding ID Version Rule ID IA Controls Severity
V-205714 WN19-CC-000240 SV-205714r569188_rule Medium
Description
Enumeration of administrator accounts when elevating can provide part of the logon information to an unauthorized user. This setting configures the system to always require users to type in a username and password to elevate a running application.
STIG Date
Microsoft Windows Server 2019 Security Technical Implementation Guide 2021-08-18

Details

Check Text ( C-5979r355060_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\CredUI\

Value Name: EnumerateAdministrators

Type: REG_DWORD
Value: 0x00000000 (0)
Fix Text (F-5979r355061_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Credential User Interface >> "Enumerate administrator accounts on elevation" to "Disabled".