module

HorizontCMS Arbitrary PHP File Upload

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Disclosed
2020-09-24
Created
2020-11-13

Description

This module exploits an arbitrary file upload vulnerability in
HorizontCMS 1.0.0-beta in order to execute arbitrary commands.

The module first attempts to authenticate to HorizontCMS. It then tries
to upload a malicious PHP file via an HTTP POST request to
`/admin/file-manager/fileupload`. The server will rename this file to a
random string. The module will therefore attempt to change the filename
back to the original name via an HTTP POST request to
`/admin/file-manager/rename`. For the `php` target, the payload is
embedded in the uploaded file and the module attempts to execute the
payload via an HTTP GET request to `/storage/file_name`. For the `linux`
and `windows` targets, the module uploads a simple PHP web shell
similar to ``. Subsequently, it leverages
the CmdStager mixin to deliver the final payload via a series of HTTP
GET requests to the PHP web shell.

Valid credentials for a HorizontCMS user with permissions to use the
FileManager are required. This would be all users in the Admin, Manager
and Editor groups if HorizontCMS is configured with the default group
settings.This module has been successfully tested against HorizontCMS
1.0.0-beta running on Ubuntu 18.04.

Author

Erik Wynter

Platform

Linux,PHP,Windows

Architectures

x86, x64, php

References

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/horizontcms_upload_exec
    msf exploit(horizontcms_upload_exec) > show targets
        ...targets...
    msf exploit(horizontcms_upload_exec) > set TARGET < target-id >
    msf exploit(horizontcms_upload_exec) > show options
        ...show and set options...
    msf exploit(horizontcms_upload_exec) > exploit
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