The default permissions of global system objects are not increased.

From Windows 7 Security Technical Implementation Guide

Part of Global System Objects Permission Strength

Associated with: CCI-000366

SV-25115r1_rule The default permissions of global system objects are not increased.

Vulnerability discussion

Windows system maintains a global list of shared system resources such as DOS device names, mutexes, and semaphores. Each type of object is created with a default DACL that specifies who can access the objects with what permissions. If this policy is enabled, the default DACL is stronger, allowing non-admin users to read shared objects, but not modify shared objects that they did not create.

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 Objects: Strengthen default permissions of internal system objects (e.g. Symbolic links)” 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\ Value Name: ProtectionMode Value Type: REG_DWORD Value: 1

Fix text

Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “System Objects: Strengthen default permissions of internal system objects (e.g. Symbolic links)” to “Enabled”.

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