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V-254481

CAT III (Low)

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

Rule ID

SV-254481r991589_rule

STIG

Microsoft Windows Server 2022 Security Technical Implementation Guide

Version

V2R8

CCIs

CCI-000366

Discussion

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 Content

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

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".