Microsoft Windows Server 2022
Windows Server 2022 must not allow anonymous enumeration of Security Account Manager (SAM) accounts
STIG ID: WN22-SO-000220 | SRG: SRG-OS-000480-GPOS-00227 | Severity: High | CCI: CCI-000366 | Vulnerability ID: V-254466
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.
Check
C-57951r849212_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: RestrictAnonymousSAMValue Type: REG_DWORDValue: 0x00000001 (1)
Fix
F-57902r849213_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".