Rapid7’s 2026 Global Cybersecurity Summit is now available on-demand.Watch sessions.
Rapid7

module

Maarch LetterBox Unrestricted File Upload

Disclosed
Feb 11, 2015
Created
May 30, 2018

Description

This module exploits a file upload vulnerability on Maarch LetterBox 2.8 due to a lack of
session and file validation in the file_to_index.php script. It allows unauthenticated
users to upload files of any type and subsequently execute PHP scripts in the context of
the web server.

Author

rastating

Platform

PHP

Architectures

php

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

Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.