---
scapolite:
    class: rule
    version: '0.51'
id: SV-88017
id_namespace: mil.disa.Windows-Server-2016-STIG
title: The Kerberos policy user ticket renewal maximum lifetime must be limited to
    seven days or less.
rule: <see below>
description: <see below>
applicability:
  - system: org.scapolite.xccdf.applicability
    weight: 10.0
    selected: false
    role: ''
    severity: medium
implementations:
  - relative_id: F-79807r1
    description: <see below>
    automations:
      - system: org.scapolite.implementation.win_gpo
        ui_path: Computer Configuration\Policies\Windows Settings\Security Settings\Account
            Policies\Kerberos Policy\Maximum lifetime for user ticket renewal
        value: 7
        verification_status: Checked.
      - system: org.scapolite.implementation.win_secedit
        setting_name: MaxRenewAge
        section: Kerberos Policy
        value: 7
checks:
  - relative_id: C-73439r1
    description: <see below>
  - relative_id: '01'
    title: OVAL-based check
    description: <see below>
    automations:
      - system: http://oval.mitre.org/XMLSchema/oval-definitions-5
        idref: oval:mil.disa.stig.windows:def:1133
        href: U_MS_Windows_Server_2016_V1R7_STIG_SCAP_1-2_Benchmark-oval.xml
crossrefs:
  - system: http://iase.disa.mil/cci
    idref: CCI-001941
    relation: ''
  - system: http://iase.disa.mil/cci
    idref: CCI-001942
    relation: ''
  - system: http://cce.mitre.org
    idref: CCE-44789-6
    relation: ''
history:
  - version: r1
    action: created
    description: WN16-DC-000050
    internal_comment: ''
---


## /rule

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

## /description

[**VulnDiscussion**]{.separator type='STIG'}

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

Satisfies: SRG-OS-000112-GPOS-00057, SRG-OS-000113-GPOS-00058

[**Documentable**]{.separator type='STIG'}

false

## /implementations/0/description

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.

## /checks/0/description

This applies to domain controllers. It is NA for other systems.

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.

## /checks/1/description

IASE supplies an OVAL check.