Microsoft Windows Server 2019

Windows Server 2019 maximum age for machine account passwords must be configured to 30 days or less

STIG ID: WN19-SO-000100 |   SRG: SRG-OS-000480-GPOS-00227 |   Severity: Medium |   CCI: CCI-000366 |   Vulnerability ID: V-205911

Description

Computer account passwords are changed automatically on a regular basis. This setting controls the maximum password age that a machine account may have. This must be set to no more than 30 days, ensuring the machine changes its password monthly.

Check

C-6176r356095_chk

This is the default configuration for this setting (30 days).If the following registry value does not exist or is not configured as specified, this is a finding:Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SYSTEM\CurrentControlSet\Services\Netlogon\Parameters\Value Name: MaximumPasswordAgeValue Type: REG_DWORDValue: 0x0000001e (30) (or less, but not 0)

Fix

F-6176r356096_fix

This is the default configuration for this setting (30 days).Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Domain member: Maximum machine account password age" to "30" or less (excluding "0", which is unacceptable).