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Moodle SpellChecker Path Authenticated Remote Command Execution

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Moodle SpellChecker Path Authenticated Remote Command Execution

Disclosed
06/22/2021
Created
10/12/2021

Description

Moodle allows an authenticated administrator to define spellcheck settings via the web interface. An administrator can update the aspell path to include a command injection. This is extremely similar to CVE-2013-3630, just using a different variable. This module was tested against Moodle version 3.11.2, 3.10.0, and 3.8.0.

Author(s)

  • Adam Reiser
  • h00die

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