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research
A Deep Dive into the GetProcessHandleFromHwnd API
A researcher examines the GetProcessHandleFromHwnd API, tracing its evolution from Windows Vista through Windows 11, and finds significant discrepancies between its documented behavior and actual implementation. The API's documentation incorrectly describes its mechanisms, and its security properties have changed substantially over time, particularly with regard to integrity level requirements and user context restrictions.
Why it matters: Security practitioners building or maintaining Windows applications need accurate understanding of this API's actual behavior, especially since documented misinformation could lead to incorrect threat modeling or missed security controls around UAC and process handle access.
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- First seen by Cybersecurity Tracker
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Correction
Correction recorded as of .
research
A Deep Dive into the GetProcessHandleFromHwnd API
No summary had been written when this copy was frozen.
- First seen by Cybersecurity Tracker
Source attribution
Correction
Correction recorded as of .
research
A Deep Dive into the GetProcessHandleFromHwnd API
A security researcher examines the GetProcessHandleFromHwnd application programming interface (API) across Windows versions, discovering discrepancies between its official documentation and actual implementation. The API, first introduced in Windows Vista through oleacc.dll, has evolved from using Windows hooks to direct kernel-level process handle opening in Windows 11, while its documented security constraints do not match real-world behavior.
Why it matters: Security teams and developers relying on API documentation for threat modeling should verify actual implementation behavior, as the GetProcessHandleFromHwnd function's documented security properties contradict how it operates in current Windows versions and may enable elevation of privilege attacks.
- Source published
- First seen by Cybersecurity Tracker
Source attribution
Correction
Correction recorded as of .
research
A Deep Dive into the GetProcessHandleFromHwnd API
A security researcher examines the GetProcessHandleFromHwnd application programming interface (API) across Windows versions, discovering discrepancies between its official documentation and actual implementation. The API, first introduced in Windows Vista through oleacc.dll, has evolved from using Windows hooks to direct kernel-level process handle opening in Windows 11, while its documented security constraints do not match real-world behavior.
Why it matters: Security teams and developers relying on API documentation for threat modeling should verify actual implementation behavior, as the GetProcessHandleFromHwnd function's documented security properties contradict how it operates in current Windows versions and may enable elevation of privilege attacks.
- Source published
- First seen by Cybersecurity Tracker