Microsoft Windows Server 2022

Windows Server 2022 default permissions of global system objects must be strengthened

STIG ID: WN22-SO-000370 | SRG: SRG-OS-000480-GPOS-00227 | Severity: Low | CCI: CCI-000366 | Vulnerability ID: V-254481

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 nonadministrative users to read shared objects but not to modify shared objects they did not create.

Check

C-254481r991589_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: ProtectionModeValue Type: REG_DWORDValue: 0x00000001 (1)

Fix

F-57917r849258_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".