UCF STIG Viewer Logo

Windows Server 2019 must not allow anonymous enumeration of Security Account Manager (SAM) accounts.


Overview

Finding ID Version Rule ID IA Controls Severity
V-93291 WN19-SO-000220 SV-103379r1_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 2019 Security Technical Implementation Guide 2020-06-15

Details

Check Text ( C-92609r1_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-99537r1_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".