SV-205849r1210247: Windows Server 2019 must be maintained at a supported servicing level. | Microsoft Windows Server 2019 STIG SCAP Benchmark

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Assessment Title

Rule Text

Windows Server 2019 must be maintained at a supported servicing level.

Description

Discussion Text

Systems at unsupported servicing levels will not receive security updates for new vulnerabilities, which leave them subject to exploitation. Systems must be maintained at a servicing level supported by the vendor with new security updates.

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

IA Controls

NIST SP 800-53

Not mappedCCI-003376SV-103303V-93215

References

DPMS Target Microsoft Windows Server 2019 DISA DPMS Target Microsoft Windows Server 2019 2907

Checks

DISA STIG (Manual Reference)

Open "Command Prompt".

Enter "winver.exe".

If the "About Windows" dialog box does not display a version supported by the vendor, this is a finding.

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.windows2019:def:205849
# Windows Server 2019 must be maintained at a supported servicing level.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# The Windows Release ID is 1809 or higher.
# 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 NT\CurrentVersion').GetValueKind('ReleaseId').ToString()]) -eq 'reg_sz') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion' -Name 'ReleaseId' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'ReleaseId') -ge '1809'))
}
# The Windows Current Build is 17763 or higher.
# registry_object (registry_test)
function test_2 {
  return (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion' -Name 'CurrentBuildNumber' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'CurrentBuildNumber') -ge '17763')
}

if ((test_1 -and test_2)) {
  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_2019 target this check assesses.

# OVAL Definition: oval:mil.disa.stig.windows2019:def:205849
if (!(Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -ErrorAction SilentlyContinue).ReleaseId -ge 1809 -and (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion" -ErrorAction SilentlyContinue).CurrentBuildNumber -ge 17763) { Write-Output "FAIL"; Exit 1 } else { Write-Output "PASS"; Exit 0 }

Remediation

Upgrade to a supported version of the operating system.