Local users on domain-joined computers must not be enumerated.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-220820 | WN10-CC-000130 | SV-220820r569187_rule | Medium |
| Description |
|---|
| The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to authorized personnel. |
| STIG | Date |
|---|---|
| Windows 10 Security Technical Implementation Guide | 2020-10-15 |
Details
| Check Text ( C-22535r554945_chk ) |
|---|
| This requirement is applicable to domain-joined systems, for standalone systems this is NA. 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: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: EnumerateLocalUsers Value Type: REG_DWORD Value: 0 |
| Fix Text (F-22524r554946_fix) |
|---|
| This requirement is applicable to domain-joined systems, for standalone systems this is NA. Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Enumerate local users on domain-joined computers" to "Disabled". |