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CVE-2020-17057 is an elevation of privilege vulnerability in the Windows Win32k component. The vulnerability allows a local attacker to gain elevated privileges on the system by exploiting improper handling of objects in memory by the Win32k driver. This could allow an attacker to execute code with higher privileges than intended, potentially leading to full system compromise.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a proof-of-concept (POC) exploit for CVE-2020-17057, a vulnerability in the Windows Desktop Composition (DComposition) kernel subsystem. The main exploit logic is implemented in 'cve-2020-17057.cpp', which interacts with undocumented Windows syscalls (NtDCompositionCreateChannel and NtDCompositionProcessChannelBatchBuffer) to create and manipulate DComposition resources in a way that triggers the vulnerability. The 'asm.asm' file provides the assembly stubs for these syscalls, which are linked into the C++ code. The project is structured as a Visual Studio solution with appropriate project and filter files for building on Windows (x86/x64). The exploit must be run locally on a vulnerable Windows 10 system and does not provide a direct privilege escalation or shell, but demonstrates the ability to trigger the bug. No network or remote attack vector is present; the exploit is purely local. The repository is a typical POC for a Windows kernel vulnerability, useful for researchers and defenders to understand and test the issue.
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