Finding ID | Version | Rule ID | IA Controls | Severity |
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V-3379 | 3.073 | SV-25104r1_rule | ECSC-1 IAIA-1 IAIA-2 | High |
Description |
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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. The LAN Manager hash uses a weak encryption algorithm and there are several tools available that use this hash to retrieve account passwords. |
STIG | Date |
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Windows 7 Security Technical Implementation Guide | 2012-07-02 |
Check Text ( C-181r1_chk ) |
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Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Local Policies -> Security Options. If the value for “Network security: Do not store LAN Manager hash value on next password change” is not set to “Enabled”, then this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \System\CurrentControlSet\Control\Lsa\ Value Name: NoLMHash Value Type: REG_DWORD Value: 1 |
Fix Text (F-141r1_fix) |
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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”. |