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CVE-2024-6769 is a privilege escalation vulnerability in Microsoft Windows 10, 11, Server 2016, 2019, and 2022. The vulnerability arises from a DLL hijacking scenario that leverages drive remapping in conjunction with poisoning the activation cache. An authenticated attacker can exploit this to execute code in a high integrity process context, bypassing User Account Control (UAC) prompts, by causing a privileged process to load a malicious DLL from a location under the attacker's control.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a functional proof-of-concept exploit for CVE-2024-6769, a Windows local privilege escalation vulnerability. The exploit is structured in two stages: (1) remapping the root drive to redirect system32 to a user-controlled directory, enabling DLL hijacking of MsCtfMonitor.dll by a medium-integrity user; (2) poisoning the activation context cache via a crafted message to the CSRSS server, causing a high-integrity process (CTFMON) to load a malicious DLL (IMM32.dll) from a user-controlled location. The exploit code includes a main PoC (POC_REMAP.cpp) that sets up the environment and triggers the vulnerability, a DLL (dllmain - MSCTFMONITOR.cpp) that interacts with the activation context cache, and a payload DLL (dllmain IMM32.c) that spawns a command shell as administrator. The exploit targets fully patched Windows 10, 11, Server 2019, and Server 2022 systems, and demonstrates reliable privilege escalation from medium to high integrity. The attack is local and requires the attacker to be a member of the Administrators group but only at medium integrity. Key fingerprintable endpoints include the hijacked DLL and manifest file paths in the user-controlled system32/tasks directory.
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