OpenSearch/elasticsearch
jaymode eeb964c886 security: default role checks authenticating realm
This change makes the default role check the authenticating realm when authorizing
a request for the current user (or run as user) where the user is trying to change their
own password. We need to do this, otherwise we open up the potential of a user in one
realm changing the password of a user in another realm.

As part of this work, the authentication service has been refactored and simplified. A
new object, Authentication, is now returned when authenticating. Currently, this object
contains the user, authenticating realm information, and if it is a run as request the
information of the realm that looked up the user.

Closes elastic/elasticsearch#2089

Original commit: elastic/x-pack-elasticsearch@3fd9c37a16
2016-06-17 10:31:54 -04:00
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