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WN22-MS-000030 Windows Server 2022 local users on domain-joined member servers must not be enumerated.

DISA STIG library V2R11
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

Windows Server 2022 local users on domain-joined member servers must not be enumerated.

Control

This applies to member servers. For domain controllers and standalone or nondomain-joined 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 Type: REG_DWORD Value: 0x00000000 (0)

Discussion

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.

Related controls

CCI-000381

Fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> Enumerate local users on domain-joined computers to "Disabled".