The system is not configured to use the Classic security model.

From Windows 2008 Member Server Security Technical Implementation Guide

Part of Sharing and Security Model for Local Accounts

Associated with: CCI-001090

SV-29267r1_rule The system is not 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

Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for “Network access: Sharing and security model for local accounts” is not set to “Classic - local users authenticate as themselves”, then this is a finding. The policy referenced configures the following registry value: 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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