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October CMS Upload Protection Bypass Code Execution

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October CMS Upload Protection Bypass Code Execution

Disclosed
04/25/2017
Created
09/06/2019

Description

This module exploits an Authenticated user with permission to upload and manage media contents can upload various files on the server. Application prevents the user from uploading PHP code by checking the file extension. It uses black-list based approach, as seen in octobercms/vendor/october/rain/src/Filesystem/ Definitions.php:blockedExtensions(). This module was tested on October CMS version v1.0.412 on Ubuntu.

Author(s)

  • Anti Räis
  • Touhid M.Shaikh <touhidshaikh22@gmail.com>
  • SecureLayer7.net

Platform

PHP

Architectures

php

Development

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use exploit/multi/http/october_upload_bypass_exec
msf exploit(october_upload_bypass_exec) > show targets
    ...targets...
msf exploit(october_upload_bypass_exec) > set TARGET < target-id >
msf exploit(october_upload_bypass_exec) > show options
    ...show and set options...
msf exploit(october_upload_bypass_exec) > exploit

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security

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