SV-225003r958472: The Deny log on locally user right on domain controllers must be configured to prevent unauthenticated access. | Microsoft Windows Server 2016 STIG SCAP Benchmark

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Assessment Title

Rule Text

The Deny log on locally user right on domain controllers must be configured to prevent unauthenticated access.

Description

Discussion Text

Inappropriate granting of user rights can provide system, administrative, and other high-level capabilities. The "Deny log on locally" user right defines accounts that are prevented from logging on interactively. The Guests group must be assigned this right to prevent unauthenticated access.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000213V-73769SV-88433

References

DPMS Target Microsoft Windows Server 2016 DISA DPMS Target Microsoft Windows Server 2016 4205

Checks

DISA STIG (Manual Reference)

This applies to domain controllers. A separate version applies to other systems.

Verify the effective setting in Local Group Policy Editor.

Run "gpedit.msc".

Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment.

If the following accounts or groups are not defined for the "Deny log on locally" user right, this is a finding.

- Guests Group

For server core installations, run the following command:

Secedit /Export /Areas User_Rights /cfg c:\path\filename.txt

Review the text file.

If the following SID(s) are not defined for the "SeDenyInteractiveLogonRight" user right, this is a finding.

S-1-5-32-546 (Guests)

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.stig.windows:def:1168
# The Deny log on locally user right on domain controllers must be configured to prevent unauthenticated access.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# System is a DC
# wmi57_object (wmi57_test)
function test_1 {
  return ((((Get-CimInstance -Namespace 'root\cimv2' -Query 'SELECT DomainRole FROM win32_computersystem' | Select-Object -First 1) | Select-Object -ExpandProperty 'DomainRole') -eq '5') -or (((Get-CimInstance -Namespace 'root\cimv2' -Query 'SELECT DomainRole FROM win32_computersystem' | Select-Object -First 1) | Select-Object -ExpandProperty 'DomainRole') -eq '4'))
}
# Deny log on locally - Guests
# accesstoken_object (accesstoken_test)
function test_2 {
  return (($__tmp = "$env:TEMP\scc_userrights_$([guid]::NewGuid().Guid).cfg"; secedit /export /cfg $__tmp /areas USER_RIGHTS /quiet | Out-Null; $__m = Select-String -Path $__tmp -Pattern '^SeDenyInteractiveLogonRight\s*=\s*(.+)$'; Remove-Item $__tmp -ErrorAction SilentlyContinue; if ($__m -and $__m.Matches[0].Groups[1].Value.Trim().Length -gt 0) { '1' } else { '0' }) -eq '1')
}

if ((test_1 -or test_2)) {
  Write-Output "PASS"
} else {
  Write-Output "FAIL"
}

Remediation

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> User Rights Assignment >> "Deny log on locally" to include the following:

- Guests Group