DirectComposition introduction Microsoft DirectComposition is a Windows component that enables high-performance bitmap composition with transforms, effects, and animations. Application developers can use the DirectComposition API to create visually engaging user interfaces that feature rich and fluid animated transitions from one visual to another.[1]| iamelli0t’s blog
CVE-2021-1732 is a 0-Day vulnerability exploited by the BITTER APT organization in one operation which was disclosed in February this year[1][2][3]. This vulnerability exploits a user mode callback opportunity in win32kfull module to break the normal execution flow and set the error flag of window object (tagWND) extra data, which results in kernel-space out-of-bounds memory access violation.| iamelli0t’s blog