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Anonymous enumeration of Security Account Manager (SAM) accounts must not be allowed.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-73667 | WN16-SO-000260 | SV-88331r1_rule | High |
| Description |
|---|
| Anonymous enumeration of SAM accounts allows anonymous logon users (null session connections) to list all accounts names, thus providing a list of potential points to attack the system. |
| STIG | Date |
|---|---|
| Windows Server 2016 Security Technical Implementation Guide | 2017-05-18 |
Details
| Check Text ( C-73749r1_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: 0x00000001 (1) |
| Fix Text (F-80117r1_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". |