Windows Kernel - DeferWindowPos Use-After-Free MS15-073

ID EDB-ID:38266
Type exploitdb
Reporter Nils Sommer
Modified 2015-09-22T00:00:00


Windows Kernel - DeferWindowPos Use-After-Free (MS15-073). CVE-2015-2366. Dos exploit for win32 platform


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: