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Anonymous enumeration of SAM accounts must not be allowed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-225492 | WN12-SO-000051 | SV-225492r569185_rule | High |
| Description |
|---|
| Anonymous enumeration of SAM accounts allows anonymous log on users (null session connections) to list all accounts names, thus providing a list of potential points to attack the system. |
| STIG | Date |
|---|---|
| Microsoft Windows Server 2012/2012 R2 Member Server Security Technical Implementation Guide | 2020-10-15 |
Details
| Check Text ( C-27191r471818_chk ) |
|---|
| 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: RestrictAnonymousSAM Value Type: REG_DWORD Value: 1 |
| Fix Text (F-27179r471819_fix) |
|---|
| Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Network access: Do not allow anonymous enumeration of SAM accounts" to "Enabled". |