Improper Ownership Management

The product assigns the wrong ownership, or does not properly verify the ownership, of an object or resource.


The following examples help to illustrate the nature of this weakness and describe methods or techniques which can be used to mitigate the risk.

Note that the examples here are by no means exhaustive and any given weakness may have many subtle varieties, each of which may require different detection methods or runtime controls.

Example One

This function is part of a privileged program that takes input from users with potentially lower privileges.

def killProcess(processID):
  os.kill(processID, signal.SIGKILL)

This code does not confirm that the process to be killed is owned by the requesting user, thus allowing an attacker to kill arbitrary processes.

This function remedies the problem by checking the owner of the process before killing it:

def killProcess(processID):

  user = getCurrentUser()

  #Check process owner against requesting user
  if getProcessOwner(processID) == user:
    os.kill(processID, signal.SIGKILL)

    print("You cannot kill a process you don't own")

See Also

Comprehensive Categorization: Access Control

Weaknesses in this category are related to access control.

Authorize Actors

Weaknesses in this category are related to the design and architecture of a system's authorization components. Frequently these deal with enforcing that agents have th...

SFP Secondary Cluster: Access Management

This category identifies Software Fault Patterns (SFPs) within the Access Management cluster.

Comprehensive CWE Dictionary

This view (slice) covers all the elements in CWE.

Entries with Maintenance Notes

CWE entries in this view have maintenance notes. Maintenance notes are an indicator that an entry might change significantly in future versions. This view was created...

Weaknesses Introduced During Design

This view (slice) lists weaknesses that can be introduced during design.

Common Weakness Enumeration content on this website is copyright of The MITRE Corporation unless otherwise specified. Use of the Common Weakness Enumeration and the associated references on this website are subject to the Terms of Use as specified by The MITRE Corporation.