Detections
Analytics

WN11-SO-000180 - 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_11_V2R9_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-253458r991589_rule, STIG-ID|WN11-SO-000180, Vuln-ID|V-253458

Plugin: Windows

Control ID: b83e3a91f974785a2a0296efff98c1d04d133ce80c1691a9c4df082164656632