Windows Server 2019 Kerberos policy user ticket renewal maximum lifetime must be limited to seven days or less.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-205705 | SRG-OS-000112-GPOS-00057 | WN19-DC-000050 | SV-205705r1051074_rule | 2026-02-12 | 3 |
Description
This setting determines the period of time (in days) during which a user's 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
ℹ️ Check
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.
✔️ Fix
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.