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Installing suPHP

suPHP is a tool for executing PHP scripts with the permissions of their owners. It consists of an Apache module (mod_suphp) and a setuid root binary (suphp) that is called by the Apache module to change the uid of the process executing the PHP interpreter.

1. Install suPHP

apt-get install libapache2-mod-suphp


2. Disable the php5 apache module

a2dismod php5


3. Restart Apache

/etc/init.d/apache2 restart


4. You can test if suPHP is working correctly by creating a php file containing the following lines:

<?php
system('id');
?>


The script will return user/group id and name. Make sure you set the file owner to a user/group with id greater than 99.