SV-226189r794453: Administrator accounts must not be enumerated during elevation. | Microsoft Windows Server 2012/2012 R2 Domain Controller STIG SCAP Benchmark

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Assessment Title

Rule Text

Administrator accounts must not be enumerated during elevation.

Description

Discussion Text

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 enter in a username and password to elevate a running application.

How this relates to the STIG checklist: STIG vs SCAP benchmark.

IA Controls

NIST SP 800-53

Not mappedCCI-001084CCE-24805-4V-14243SV-52955

References

DPMS Target Microsoft Windows Server 2012-2012 R2 DC DISA DPMS Target Microsoft Windows Server 2012-2012 R2 DC 4217

Checks

OVAL

oval:mil.disa.fso.windows:var:449500 ← xccdf_mil.disa.stig_value_enumerate_administrator_accounts_on_elevation_var

DISA STIG (Manual Reference)

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)

SCC Automation Reference

The reconstructed evaluation script behind this rule's OVAL check(s) — every module a compound check combines, with this rule's own concrete values and DISA's SCC tool's real per-module mechanism curated from static teardown of SCC releases.

# Windows PowerShell
# Reconstructed from oval:mil.disa.fso.windows:def:4495
# Administrator accounts must not be enumerated during elevation.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'Enumerate administrator accounts on elevation' is set to 'Disabled'
# registry_object (registry_test)
function test_1 {
  return (((@{String='reg_sz';ExpandString='reg_expand_sz';Binary='reg_binary';DWord='reg_dword';MultiString='reg_multi_sz';QWord='reg_qword';None='reg_none'}[(Get-Item -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CredUI').GetValueKind('EnumerateAdministrators').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CredUI' -Name 'EnumerateAdministrators' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'EnumerateAdministrators') -eq 0))
}

if (test_1) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Assessment Script Powered by AISyntax-verified

A standalone PowerShell script to assess this control automatically. Review before running it in your environment.

Syntax-checked as valid PowerShell. Not executed here — running it for real needs the actual ms_windows_2012_and_2012_r2_dc target this check assesses.

# OVAL Definition: oval:mil.disa.fso.windows:def:4495
$compliant = Test-Path -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CredUI" -and (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CredUI" -Name "EnumerateAdministrators" -ErrorAction SilentlyContinue).EnumerateAdministrators -eq 0
if ($compliant) { Write-Output "PASS"; Exit 0 } else { Write-Output "FAIL"; Exit 1 }

Remediation

Configure the policy value for Computer Configuration >> Administrative Templates >> Windows Components >> Credential User Interface >> "Enumerate administrator accounts on elevation" to "Disabled".