Was done for convenience but could potentially be exploited by an
attacker using signing up via one of these routes, then forwarding
an email confirmation to another user so they unknowingly utilise
an account someone else controls.
Tweaks the flow of confirming email, and the user invite flow.
For #3050
As per #3047.
Also made some SAML specific fixes:
- IDP initiated login was broken due to forced default session value.
Double checked against OneLogin lib docs that this reverted logic was fine.
- Changed how the saml login flow works to use 'withoutMiddleware' on
the route instead of hacking out the session driver. This was due to
the array driver (previously used for the hack) no longer being
considered non-persistent.
Session was being lost due to the callback POST request cookies
not being provided due to samesite=lax. This instead adds an additional
hop in the flow to route the request via a GET request so the session is
retained. SAML POST data is stored encrypted in cache via a unique ID
then pulled out straight afterwards, and restored into POST for the SAML
toolkit to validate.
Updated testing to cover.
During writing of the update notes, found that the upgrade path would be
tricky from a security point of view. If people were pending email
confirmation but had an active session, they could technically be
actively logged in after the next release.
Added middlware as an extra precaution for now.
- Updated auth system for mfa to not update intended URL so that the
user is not redirected to mfa setup after eventual login.
- Added notification for users setting up MFA, after setup when
redirected back to login screen to advise that MFA setup was complete
but they need to login again.
- Updated some bits of wording to display better.
- Restructured some of the route naming to be a little more consistent.
- Moved the routes about to be more logically in one place.
- Created a new middleware to handle the auth of people that should be
allowed access to mfa setup routes, since these could be used by
existing logged in users or by people needing to setup MFA on access.
- Added testing to cover MFA setup required flow.
- Added TTL and method tracking to session last-login tracking system.
Also added testing to cover as part of this in addition to adding the
core backup code handling required.
Also added the standardised translations for switching mfa mode and
adding testing for this switching.
- Reduced options to single new configuration paramter instead of two.
- Moved more logic into UserAvatars class.
- Updated LDAP avatar import to also run on login when no image is
currently set.
- Added thumbnail fetching to search requests.
- Added testing to cover.
Related to PR #2320, and issue #1161
