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Microsoft Windows Kernel - 'DeferWindowPos' Use-After-Free (MS15-073)

🗓️ 22 Sep 2015 00:00:00Reported by Nils SommerType 
exploitdb
 exploitdb
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Microsoft Windows Kernel use-after-free vulnerability in 'DeferWindowPos' (MS15-073

Code
Source: https://code.google.com/p/google-security-research/issues/detail?id=339

The attached PoC demonstrate a use-after-free condition that occurs when operating on a DeferWindowPos object from multiple threads. The DeferWindowPos() call will trigger and block on the execution of a window procedure in a separate thread from which we call EndDeferWindowPos on the same handle. specialpool.txt contains the debugger output with Session Pool enabled, crash.txt the debugger output without Session Pool.

Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/38266.zip

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