From Windows 2008 Member Server Security Technical Implementation Guide
Part of Caching of logon credentials
Associated with: CCI-000366
The default Windows configuration caches the last logon credentials for users who log on interactively to a system. This feature is provided for system availability reasons, such as the user's machine being disconnected from the network or domain controllers being unavailable. Even though the credential cache is well-protected, if a system is attacked, an unauthorized individual may isolate the password to a domain user account using a password-cracking program and gain access to the domain.
If the system is not a member of a domain, this is NA. 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 "Interactive Logon: Number of previous logons to cache (in case Domain Controller is unavailable)" is not set to "2" logons or less, this is a finding. The policy referenced configures the following registry value: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\ Value Name: CachedLogonsCount Value Type: REG_SZ Value: 2 (or less)
If the system is not a member of a domain, this is NA. Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> "Interactive Logon: Number of previous logons to cache (in case Domain Controller is not available)" to "2" logons or less.
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