Network security: Allow LocalSystem NULL session fallbackID: oval:org.secpod.oval:def:40304 | Date: (C)2017-04-25 (M)2023-07-04 |
Class: COMPLIANCE | Family: windows |
Allow NTLM to fall back to NULL session when used with LocalSystem.
The default is TRUE up to Windows Vista and FALSE in Windows 7.
Vulnerability:
NULL sessions are less secure because by definition they are unauthenticated.
Counter Measure:
Configure Network security: Allow LocalSystem NULL session fallback to Disabled.
Potential Impact:
Any applications that require NULL sessions for LocalSystem will not work as designed.
Fix:
(1) GPO: Computer Configuration\Windows Settings\Security Settings\Local Policies\Security Options\Network security: Allow LocalSystem NULL session fallback
(2) REG: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Lsa\MSV1_0!allownullsessionfallback
Platform: |
Microsoft Windows Server 2016 |