Anonymous enumeration of SAM accounts must not be allowed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-253453 | WN11-SO-000145 | SV-253453r991589_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 11 Security Technical Implementation Guide | 2024-09-12 |
Details
| Check Text (C-56906r829441_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-56856r829442_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". |