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The system must be configured to prevent the storage of the LAN Manager hash of passwords.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-253461 | WN11-SO-000195 | SV-253461r829467_rule | High |
| Description |
|---|
| The LAN Manager hash uses a weak encryption algorithm and there are several tools available that use this hash to retrieve account passwords. This setting controls whether or not a LAN Manager hash of the password is stored in the SAM the next time the password is changed. |
| STIG | Date |
|---|---|
| Microsoft Windows 11 Security Technical Implementation Guide | 2022-06-24 |
Details
| Check Text ( C-56914r829465_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: NoLMHash Value Type: REG_DWORD Value: 1 |
| Fix Text (F-56864r829466_fix) |
|---|
| Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Do not store LAN Manager hash value on next password change" to "Enabled". |