FoF Pretty Mail 1.1.2 Command Injection

Exploit Title: FoF Pretty Mail 1.1.2 Extension for Flarum Command InjectionDate: 03/28/2024Exploit Author: Chokri HammediVendor Homepage: https://flarum.org/Software Link: https://github.com/FriendsOfFlarum/pretty-mailVersion: 1.1.2Tested on: Windows XPCVE: N/ADescription:The FoF Pretty Mail extension for Flarum is vulnerable to Command Injectiondue to the unsafe handling of user input in the email template. An attackerwith administrative access can inject PHP code into the email template,leading to arbitrary command execution on the server.Steps to Reproduce:Log in as an administrator on the Flarum forum.Navigate to the FoF Pretty Mail extension settings.Edit the email default template and insert one of the following payloads atthe end of the template:<?php system('echo "Take The Rose"; id'); ?>or<?php system('echo "Take The Rose"; cat /etc/passwd'); ?>Save the changes to the email template.Trigger any action that sends an email, such as user registration orpassword reset.The recipient of the email will see the message "Take The Rose" followed bythe output of the injected command (id or cat /etc/passwd) in the emailcontent.