Finding ID | Version | Rule ID | IA Controls | Severity |
---|---|---|---|---|
V-73681 | WN16-SO-000330 | SV-88345r1_rule | Medium |
Description |
---|
NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access. |
STIG | Date |
---|---|
Windows Server 2016 Security Technical Implementation Guide | 2019-12-12 |
Check Text ( C-73763r1_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\MSV1_0\ Value Name: allownullsessionfallback Type: REG_DWORD Value: 0x00000000 (0) |
Fix Text (F-80131r1_fix) |
---|
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Allow LocalSystem NULL session fallback" to "Disabled". |