SV-25042r1: The maximum age for machine account passwords is not set to requirements. | Windows 7 Security Technical Implementation Guide

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Assessment Title

Rule Text

The maximum age for machine account passwords is not set to requirements.

Description

Discussion Text

This setting controls the maximum password age that a machine account may have. This setting should be set to no more than 30 days, ensuring the machine changes its password monthly.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366CCE-9123-1

Additional Details

Third-Party Tools

Responsibility

System Administrator

References

DPMS Target Windows 7 DISA DPMS Target Windows 7 1712

Checks

OVAL

oval:mil.disa.fso.windows:var:368800 ← xccdf_mil.disa.stig_value_maximum_machine_account_password_age_var

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:3688
# The maximum age for machine account passwords is not set to requirements.
# 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: Maximum machine account password age' is set to '30' days or less
# 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('MaximumPasswordAge').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters' -Name 'MaximumPasswordAge' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'MaximumPasswordAge') -le 30))
}
# Verifies 'Domain member: Maximum machine account password age' is not set to '0'
# registry_object (registry_test)
function test_2 {
  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('MaximumPasswordAge').ToString()]) -eq 'reg_dword') -and (((Get-ItemProperty -Path 'Registry::HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netlogon\Parameters' -Name 'MaximumPasswordAge' -ErrorAction SilentlyContinue) | Select-Object -ExpandProperty 'MaximumPasswordAge') -gt 0))
}

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 windows_7 target this check assesses.

# OVAL Definition: oval:mil.disa.fso.windows:def:3688

$maxAge = (Get-ItemProperty -Path "HKLM:\System\CurrentControlSet\Services\Netlogon\Parameters" -Name "MaximumPasswordAge" -ErrorAction SilentlyContinue).MaximumPasswordAge
if ($maxAge -le 30 -and $maxAge -ne 0) { Write-Output "PASS"; Exit 0 } else { Write-Output "FAIL"; Exit 1 }

Remediation

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “Domain Member: Maximum Machine Account Password Age” to 30 or less, but not 0.