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-220937 | WN10-SO-000195 | SV-220937r1051034_rule | CCI-004062 | 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 10 Security Technical Implementation Guide | 2025-02-25 | |||
Details
Check Text (C-220937r1051034_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-22641r555297_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".