SV-225029r958908: The setting Domain member: Digitally encrypt or sign secure channel data (always) must be configured to Enabled. | Microsoft Windows Server 2016 STIG SCAP Benchmark

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Assessment Title

Rule Text

The setting Domain member: Digitally encrypt or sign secure channel data (always) must be configured to Enabled.

Description

Discussion Text

Requests sent on the secure channel are authenticated, and sensitive information (such as passwords) is encrypted, but not all information is encrypted. If this policy is enabled, outgoing secure channel traffic will be encrypted and signed. Satisfies: SRG-OS-000423-GPOS-00187, SRG-OS-000424-GPOS-00188

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

IA Controls

NIST SP 800-53

Not mappedCCI-002418Not mappedCCI-002421SV-88297V-73633

References

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

Checks

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: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\

Value Name: RequireSignOrSeal

Value Type: REG_DWORD
Value: 0x00000001 (1)

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:1188
# The setting Domain member: Digitally encrypt or sign secure channel data (always) must be configured to Enabled.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Verifies 'Domain member: Digitally encrypt or sign secure channel data (always)' is set to 'Enabled'
# 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\System\CurrentControlSet\Services\Netlogon\Parameters').GetValueKind('RequireSignOrSeal').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters' -Name 'RequireSignOrSeal' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'RequireSignOrSeal') -eq 1))
}

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_server_2016 target this check assesses.

# OVAL Definition: oval:mil.disa.stig.windows:def:1188
$registryPath = "HKLM:\System\CurrentControlSet\Services\Netlogon\Parameters"
$registryKey = "RequireSignOrSeal"
$registryValue = 1
if (Test-Path $registryPath -ErrorAction SilentlyContinue) {
    $regValue = Get-ItemProperty -Path $registryPath -Name $registryKey -ErrorAction SilentlyContinue
    if ($regValue -and $regValue.$registryKey -eq $registryValue) {
        Write-Output "PASS"
        Exit 0
    }
}
Write-Output "FAIL"
Exit 1

Remediation

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Digitally encrypt or sign secure channel data (always)" to "Enabled".