SV-226068r794388: The Kerberos policy user ticket renewal maximum lifetime must be limited to 7 days or less. | Microsoft Windows Server 2012/2012 R2 Domain Controller STIG SCAP Benchmark

Loading benchmark…

Assessment Title

Rule Text

The Kerberos policy user ticket renewal maximum lifetime must be limited to 7 days or less.

Description

Discussion Text

This setting determines the period of time (in days) during which a user's TGT may be renewed. This security configuration limits the amount of time an attacker has to crack the TGT and gain access.

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

IA Controls

NIST SP 800-53

Not mappedCCI-000366CCE-24125-7SV-51166V-2379

References

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

Checks

DISA STIG (Manual Reference)

Verify the following is configured in the Default Domain Policy.

Open "Group Policy Management".
Navigate to "Group Policy Objects" in the Domain being reviewed (Forest > Domains > Domain). 
Right click on the "Default Domain Policy".
Select Edit.
Navigate to Computer Configuration > Policies > Windows Settings > Security Settings > Account Policies > Kerberos Policy.

If the "Maximum lifetime for user ticket renewal" is greater than 7 days, 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.fso.windows:def:4699
# The Kerberos policy user ticket renewal maximum lifetime must be limited to 7 days or less.
# Per-module read mechanism curated from static teardown of DISA's SCC tool
# (SCAP Compliance Checker) -- see the SCC Automation Reference above.

# Kerberos Policy - Maximum lifetime for user ticket renewal - 7 days or less
# wmi_object (wmi_test)
function test_1 {
  return (((Get-CimInstance -Namespace 'root\rsop\computer' -Query 'SELECT setting FROM RSOP_SecuritySettingNumeric WHERE KeyName=''MaxRenewAge''' | Select-Object -First 1) | Select-Object -ExpandProperty 'setting') -le 7)
}

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:4699
$namespace = "root\rsop\computer"
$wqlQuery = "SELECT * FROM RSOP_SecuritySettingNumeric WHERE KeyName='MaxRenewAge'"
$maxRenewAge = (Get-CimInstance -Namespace $namespace -Query $wqlQuery).setting
if ($maxRenewAge -le 7) { Write-Output "PASS"; exit 0 } else { Write-Output "FAIL"; exit 1 }

Remediation

Configure the policy value in the Default Domain Policy for Computer Configuration ->  Policies -> Windows Settings -> Security Settings -> Account Policies -> Kerberos Policy -> "Maximum lifetime for user ticket renewal" to a maximum of 7 days or less.