WN16-SO-000330 - NTLM must be prevented from falling back to a Null session.

Information

NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access.

Solution

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> 'Network security: Allow LocalSystem NULL session fallback' to 'Disabled'.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Windows_Server_2016_V2R10_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-225050r991589_rule, STIG-ID|WN16-SO-000330, STIG-Legacy|SV-88345, STIG-Legacy|V-73681, Vuln-ID|V-225050

Plugin: Windows

Control ID: c725baa6d61cdf786d33e6e981a4c5878b8c6eb66cf261cf873b803ce807591f