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Windows Server 2019 default permissions of global system objects must be strengthened.


Overview

Finding ID Version Rule ID IA Controls Severity
V-205923 WN19-SO-000370 SV-205923r569188_rule Low
Description
Windows systems maintain a global list of shared system resources such as DOS device names, mutexes, and semaphores. Each type of object is created with a default Discretionary Access Control List (DACL) that specifies who can access the objects with what permissions. When this policy is enabled, the default DACL is stronger, allowing non-administrative users to read shared objects but not to modify shared objects they did not create.
STIG Date
Microsoft Windows Server 2019 Security Technical Implementation Guide 2022-03-01

Details

Check Text ( C-6188r356131_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SYSTEM\CurrentControlSet\Control\Session Manager\

Value Name: ProtectionMode

Value Type: REG_DWORD
Value: 0x00000001 (1)
Fix Text (F-6188r356132_fix)
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".