The system must be configured to use the Classic security model.

From Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide

Part of Sharing and Security Model for Local Accounts

Associated with: CCI-001090

SV-52891r1_rule The system must be configured to use the Classic security model.

Vulnerability discussion

Windows includes two network-sharing security models - Classic and Guest only. With the Classic model, local accounts must be password protected; otherwise, anyone can use guest user accounts to access shared system resources.

Check content

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\Control\Lsa\ Value Name: ForceGuest Value Type: REG_DWORD Value: 0

Fix text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Sharing and security model for local accounts" to "Classic - local users authenticate as themselves".

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