CVE-2020-5248

GLPI before before version 9.4.6 has a vulnerability involving a default
encryption key. GLPIKEY is public and is used on every instance. This means
anyone can decrypt sensitive data stored using this key. It is possible to
change the key before installing GLPI. But on existing instances, data must
be reencrypted with the new key. Problem is we can not know which columns
or rows in the database are using that; espcially from plugins. Changing
the key without updating data would lend in bad password sent from glpi;
but storing them again from the UI will work.