The Kerberos service ticket maximum lifetime must meet minimum standards.

From Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide

Part of Kerberos-Service Ticket Lifetime

Associated with IA controls: ECSC-1

SV-36176r1_rule The Kerberos service ticket maximum lifetime must meet minimum standards.

Vulnerability discussion

This setting determines the maximum amount of time (in minutes) that a granted session ticket can be used to access a particular service. Session tickets are used only to authenticate new connections with servers. Ongoing operations are not interrupted if the session ticket used to authenticate the connection expires during the connection.

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Configure the Kerberos policy option “Maximum lifetime for service ticket” to a maximum of 600 minutes, but not 0 which equates to “Ticket doesn’t expire”.

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