STIGQter: STIG Summary: Microsoft Windows Server 2016 Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 04 May 2021:

The Kerberos service ticket maximum lifetime must be limited to 600 minutes or less.

DISA Rule

SV-224966r569186_rule

Vulnerability Number

V-224966

Group Title

SRG-OS-000112-GPOS-00057

Rule Version

WN16-DC-000030

Severity

CAT II

CCI(s)

• CCI-001941 - The information system implements replay-resistant authentication mechanisms for network access to privileged accounts.
• CCI-001942 - The information system implements replay-resistant authentication mechanisms for network access to non-privileged accounts.

Weight

10

Fix Recommendation

Configure the policy value in the Default Domain Policy for Computer Configuration >> Policies >> Windows Settings >> Security Settings >> Account Policies >> Kerberos Policy >> "Maximum lifetime for service ticket" to a maximum of "600" minutes, but not "0", which equates to "Ticket doesn't expire".

Check Contents

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 value for "Maximum lifetime for service ticket" is "0" or greater than "600" minutes, this is a finding.

Vulnerability Number

V-224966

Documentable

False

Rule Version

WN16-DC-000030

Severity Override Guidance

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 value for "Maximum lifetime for service ticket" is "0" or greater than "600" minutes, this is a finding.

Check Content Reference

M

Target Key

4205

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