COMMON WEAKNESS ENUMERATIONDraft

CWE-422

Unprotected Windows Messaging Channel ('Shatter')

The product does not properly verify the source of a message in the Windows Messaging System while running at elevated privileges, creating an alternate channel through which an attacker can directly send a message to the product.

Abstraction

Variant

Structure

Simple

Likelihood of Exploit

Medium

Understand the problem

What is the problem?

The product does not properly verify the source of a message in the Windows Messaging System while running at elevated privileges, creating an alternate channel through which an attacker can directly send a message to the product.

Root cause

How and when does the problem arise?

Lifecycle phase

Architecture and Design

Risk

What does successful exploitation lead to?

Gain Privileges or Assume IdentityBypass Protection Mechanism

Affected security scopes: Access Control

Defence

How is it prevented and fixed?

Architecture and Design

Architecture and design approach

Detail
Always verify and authenticate the source of the message.