Check the HTTP Referer header on all requests
The referer was only checked in WSGIExecutioner classes:
- jsonserver
- KerberosWSGIExecutioner
- xmlserver
- jsonserver_kerb
This left /i18n_messages, /session/login_kerberos,
/session/login_x509, /session/login_password,
/session/change_password and /session/sync_token unprotected
against CSRF attacks.
CVE-2023-5455
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
(cherry picked from commit 2c52a7dfd26ac561786e72e4304acbf9585698b6)