The system must be configured to prevent the storage of the LAN Manager hash of passwords.

From Windows 8 Security Technical Implementation Guide

Part of LAN Manager Hash stored

Associated with IA controls: ECSC-1, IAIA-2, IAIA-1

SV-48081r1_rule The system must be configured to prevent the storage of the LAN Manager hash of passwords.

Vulnerability discussion

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.

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Fix text

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".

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