Anonymous enumeration of shares must be restricted.

From Windows 7 Security Technical Implementation Guide

Part of Anonymous shares are not restricted

Associated with: CCI-001090

SV-25090r2_rule Anonymous enumeration of shares must be restricted.

Vulnerability discussion

Allowing anonymous logon users (null session connections) to list all account names and enumerate all shared resources can provide a map of potential points to attack the system.

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: Do not allow anonymous enumeration of SAM accounts and shares" is not set to "Enabled", 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: RestrictAnonymous Value Type: REG_DWORD Value: 1

Fix text

Configure the policy values for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network access: Do not allow anonymous enumeration of SAM accounts and shares" to "Enabled".

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