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The Kerberos service ticket maximum lifetime must meet minimum standards.


Overview

Finding ID Version Rule ID IA Controls Severity
V-2377 AD.4030_2003 SV-28496r2_rule ECSC-1 Medium
Description
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.
STIG Date
Active Directory Service 2003 Security Technical Implementation Guide (STIG) 2011-05-20

Details

Check Text ( C-32087r1_chk )
1. Analyze the system using the Security Configuration and Analysis snap-in.

2. Expand the Security Configuration and Analysis tree view. Navigate to Account Policies -> Kerberos Policy.

3. If the “Maximum lifetime for service ticket” is greater than ‘600’ minutes, then this is a finding.
Fix Text (F-5782r1_fix)
Configure the Kerberos policy option Maximum lifetime for service ticket to a maximum of 600 minutes or less.