Title

The maximum age for machine account passwords must be set to requirements. (Cat III impact)

Discussion

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

Check Content

Analyze the system using the Security Configuration and Analysis snap-in. (See "Performing Analysis with the Security Configuration and Analysis Snap-in" in the STIG Overview document.) Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for "Domain Member: Maximum Machine Account Password Age" is "0" or greater than 30 (30 is the default), this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Services\Netlogon\Parameters\ Value Name: MaximumPasswordAge Value Type: REG_DWORD Value: 30

Fix Text

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).

Additional Identifiers

Rule ID: SV-48075r1_rule

Vulnerability ID: V-3373

Group Title: Maximum Machine Account Password Age

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.