The system is configured to give anonymous users Everyone rights.

From Windows 2008 Domain Controller Security Technical Implementation Guide

Associated with: CCI-000366

SV-29264r1_rule The system is configured to give anonymous users Everyone rights.

Vulnerability discussion

This setting helps define the permissions that anonymous users have. If this setting is enabled then anonymous users have the same rights and permissions as the built-in Everyone group. Anonymous users should not have these permissions or rights.

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: Let everyone permissions apply to anonymous users” is not set to “Disabled”, 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: EveryoneIncludesAnonymous 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: Let everyone permissions apply to anonymous users” to “Disabled”.

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