Title

The system is configured to allow case insensitivity. (Cat II impact)

Discussion

This setting controls the behavior of non-Windows subsystems when dealing with the case of arguments or commands. Case sensitivity could lead to the access of files or commands that should be restricted. To prevent this from happening, case insensitivity restrictions should be required.

Check Content

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 “System Object: Require Case Insensitivity for Non-Windows Subsystems” 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\Session Manager\Kernel\ Value Name: ObCaseInsensitive Value Type: REG_DWORD Value: 1

Fix Text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “System Object: Require Case Insensitivity for Non-Windows Subsystems” to “Enabled”.

Additional Identifiers

Rule ID: SV-3385r1_rule

Vulnerability ID: V-3385

Group Title: Case Insensitivity for Non-Windows

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.