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CVE-2022-21881 is an elevation of privilege vulnerability in the Windows Kernel. The vulnerability allows a local attacker to gain SYSTEM privileges by exploiting improper handling of objects in kernel memory. The flaw exists due to insufficient access control or validation in the kernel, enabling privilege escalation from a low-privileged user context.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single C++ proof-of-concept exploit for CVE-2022-21881, a Windows kernel vulnerability. The code sets up function pointers to NtLockFile, NtSetInformationFile, and NtUnlockFile from ntdll.dll, creates a file named 'a.bin', and launches two threads. One thread repeatedly calls NtSetInformationFile with FILE_COMPLETION_INFORMATION, while the other thread repeatedly locks and unlocks the file using NtLockFile and NtUnlockFile. This creates a race condition intended to trigger the vulnerability in the Windows kernel's file handling subsystem. The exploit is a POC and does not provide a direct privilege escalation or shell, but demonstrates the bug's presence. The only fingerprintable endpoint is the temporary file 'a.bin'. The code is self-contained and does not require network access.
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