Proof of Concept script to exploit the authenticated SSTI+RCE in Grav CMS (CVE-2024-28116). It creates a malicious RCE page on the server running the vulnerable Grav CMS.

• https://nvd.nist.gov/vuln/detail/CVE-2024-28116

Since it is an authenticated vulnerability it is needed to use valid credentials (hardcoding them on the script) of a Grav CMS editor user.

Following is reported an usage example of the tool:

# python3 graver.py -t <target_url> -p <target_port>

Simple example with returned output:

# python3 graver.py -t http://www.mygrav.local -p 8000

RCE payload injected, now visit the malicious page at 'http://www.mygrav.local:8000/hacked_r79b?do='

graver was developed by Maurizio Siddu

Copyright (c) 2024 graver

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/