"Unfixable" flaw breaks Microsoft's Windows
So what's the latest news on this? Has anything been done about it?
The flaw is part of the fundamental design of the Windows operating system. It is contained within the mechanism that controls the flow of messages between different windows on the desktop. This is called the Win32 API and has remained unchanged since 1993.
Critically, the Win32 API system does not authenticate the messages, so cannot distinguish messages from malicious or legitimate sources. This allowed Paget to select a window with the highest privileges and surreptitiously embed a malicious piece of code. When executed, the code would increase his user privileges to the maximum given to that window.
Critically, the Win32 API system does not authenticate the messages, so cannot distinguish messages from malicious or legitimate sources. This allowed Paget to select a window with the highest privileges and surreptitiously embed a malicious piece of code. When executed, the code would increase his user privileges to the maximum given to that window.
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