The Kerberos policy option Maximum lifetime for user ticket renewal must be configured for a maximum of 7 days or less.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-2379	AD.4032_2003	SV-28500r1_rule	ECSC-1	Medium

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

STIG	Date
Windows 2003 Domain Controller Security Technical Implementation Guide	2012-07-02

Details

Check Text ( C-471r1_chk )
1. Analyze the system using the Security Configuration and Analysis. 2. Expand the Security Configuration and Analysis tree view. 3. Navigate to Account Policies -> Kerberos Policy. 4. If the “Maximum lifetime for user ticket renewal” is greater than ‘7’ days, then this is a finding.

Fix Text (F-5784r1_fix)
Configure the Kerberos policy option "Maximum lifetime for user ticket renewal" to a maximum of 7 days or less.