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Merge branch 'master' into feature/sql_2 

Original commit: elastic/x-pack-elasticsearch@9a49ecbbd5
This commit is contained in:
Nik Everett 2018-02-06 14:40:55 -05:00
parent 5a3004300c 18c04c714d
commit 5b46899cc3
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43
README.asciidoc
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@ -97,41 +97,21 @@ gradle clean install
= Building documentation
The source files in this repository can be included in either the X-Pack Reference or the Elasticsearch Reference.
The source files in this repository can be included in either the X-Pack
Reference or the Elasticsearch Reference.
NOTE: In 5.5 and later, the Elasticsearch Reference includes X-Pack-specific content when it is built from this repo.
NOTE: In 5.4 and later, the Elasticsearch Reference includes X-Pack-specific
content that is pulled from this repo.
To build the Elasticsearch Reference on your local machine:
* Use the `index.asciidoc` file in the docs/en directory.
* Specify the location of the `elasticsearch/docs` directory with the `--resource` option when you run `build_docs.pl`.
For example:
[source, txt]
-----
./docs/build_docs.pl --doc elasticsearch-extra/x-pack-elasticsearch/docs/en/index.asciidoc --resource=elasticsearch/docs --chunk 1
-----
For information about building the X-Pack Reference, see the README in the x-pack repo.
To build a release notes page for the pull requests in this repository:
* Use the dev-tools/xes-release-notes.pl script to pull PRs from the x-pack-elasticsearch repo. Alternatively, use the dev-tools/xescpp_release_notes.pl script to pull PRs from both the x-pack-elasticsearch and machine-learning-cpp repos.
* Specify the version label for which you want the release notes.
* Redirect the output to a new local file.
NOTE: You must have a personal access token called ~/.github_auth with "repo" scope. Use steps similar to "Vault Secret" to create this file.
For example:
[source, txt]
-----
./dev-tools/xes_release_notes.pl v5.5.2 > ~/tmp/5.5.2.asciidoc
-----
To build the Elasticsearch Reference on your local machine, use the `docbldes`
or `docbldesx` build commands defined in
https://github.com/elastic/docs/blob/master/doc_build_aliases.sh
== Adding Images
When you include an image in the documentation, specify the path relative to the location of the asciidoc file. By convention, we put images in an `images` subdirectory.
When you include an image in the documentation, specify the path relative to the
location of the asciidoc file. By convention, we put images in an `images`
subdirectory.
For example to insert `watcher-ui-edit-watch.png` in `watcher/limitations.asciidoc`:
@ -143,4 +123,5 @@ For example to insert `watcher-ui-edit-watch.png` in `watcher/limitations.asciid
image::images/watcher-ui-edit-watch.png["Editing a watch"]
-----
Please note that image names and anchor IDs must be unique within the book, so do not use generic identifiers.
Please note that image names and anchor IDs must be unique within the book, so
do not use generic identifiers.

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@ -10,6 +10,7 @@
* <<certgen>>
* <<certutil>>
* <<migrate-tool>>
* <<saml-metadata>>
* <<setup-passwords>>
* <<syskeygen>>
* <<users-command>>
@ -19,6 +20,7 @@
include::certgen.asciidoc[]
include::certutil.asciidoc[]
include::migrate-tool.asciidoc[]
include::saml-metadata.asciidoc[]
include::setup-passwords.asciidoc[]
include::syskeygen.asciidoc[]
include::users-command.asciidoc[]

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@ -0,0 +1,108 @@
[role="xpack"]
[[saml-metadata]]
== saml-metadata
The `saml-metadata` command can be used to generate a SAML 2.0 Service Provider
Metadata file.
[float]
=== Synopsis
[source,shell]
--------------------------------------------------
bin/x-pack/saml-metadata
[--realm <name>]
[--out <file_path>] [--batch]
[--attribute <name>] [--service-name <name>]
[--locale <name>] [--contacts]
([--organisation-name <name>] [--organisation-display-name <name>] [--organisation-url <url>])
[-E <KeyValuePair>]
[-h, --help] ([-s, --silent] | [-v, --verbose])
--------------------------------------------------
[float]
=== Description
The SAML 2.0 specification provides a mechanism for Service Providers to
describe their capabilities and configuration using a _metadata file_.
The `saml-metadata` command generates such a file, based on the configuration of
a SAML realm in {es}.
Some SAML Identity Providers will allow you to automatically import a metadata
file when you configure the Elastic Stack as a Service Provider.
[float]
=== Parameters
`--attribute <name>`:: Specifies a SAML attribute that should be
included as a `<RequestedAttribute>` element in the metadata. Any attribute
configured in the {es} realm is automatically included and does not need to be
specified as a commandline option.
`--batch`:: Do not prompt for user input.
`--contacts`:: Specifies that the metadata should include one or more
`<ContactPerson>` elements. The user will be prompted to enter the details for
each person.
`-E <KeyValuePair>`:: Configures an {es} setting.
`-h, --help`:: Returns all of the command parameters.
`--locale <name>`:: Specifies the locale to use for metadata elements such as
`<ServiceName>`. Defaults to the JVM's default system locale.
`--organisation-display-name <name`:: Specified the value of the
`<OrganizationDisplayName>` element.
Only valid if `--organisation-name` is also specified.
`--organisation-name <name>`:: Specifies that an `<Organization>` element should
be included in the metadata and provides the value for the `<OrganizationName>`.
If this is specified, then `--organisation-url` must also be specified.
`--organisation-url <url>`:: Specifies the value of the `<OrganizationURL>`
element. This is required if `--organisation-name` is specified.
`--out <file_path>`:: Specifies a path for the output files.
Defaults to `saml-elasticsearch-metadata.xml`
`--service-name <name>`:: Specifies the value for the `<ServiceName>` element in
the metadata. Defaults to `elasticsearch`.
`--realm <name>`:: Specifies the name of the realm for which the metadata
should be generated. This parameter is required if there is more than 1 `saml`
realm in your {es} configuration.
`-s, --silent`:: Shows minimal output.
`-v, --verbose`:: Shows verbose output.
[float]
=== Examples
The following command generates a default metadata file for the `saml1` realm:
[source, sh]
--------------------------------------------------
bin/x-pack/saml-metadata --realm saml1
--------------------------------------------------
The file will be written to `saml-elasticsearch-metadata.xml`.
You may be prompted to provide the "friendlyName" value for any attributes that
are used by the realm.
The following command generates a metadata file for the `saml2` realm, with a
`<ServiceName>` of `kibana-finance`, a locale of `en-GB` and includes
`<ContactPerson>` elements and an `<Organization>` element:
[source, sh]
--------------------------------------------------
bin/x-pack/saml-metadata --realm saml2 \
--service-name kibana-finance \
--locale en-GB \
--contacts \
--organisation-name "Mega Corp. Finance Team" \
--organisation-url "http://mega.example.com/finance/"
--------------------------------------------------

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@ -170,6 +170,7 @@ is no password to manage or reset.
From time-to-time you may find a reference to one of these users inside your
logs, including <<auditing, audit logs>>.
[[how-authc-works]]
=== How Authentication Works
Authentication in {security} is handled by one or more authentication services
@ -203,6 +204,13 @@ An internal realm where users are defined in files stored on each node in the
Elasticsearch cluster. This realm supports an authentication token in the form
of username and password, and is always available. See <<file-realm>>.
_saml_::
A realm that facilitates authentication using the SAML 2.0 Web SSO protocol.
This realm is designed to support authentication through {kib}, and is non
intended for use in the REST API. See <<saml-realm>>.
{security} also supports custom realms. If you need to integrate with another
authentication system, you can build a custom realm plugin. For more information,
see <<custom-realms, Integrating with Other Authentication Systems>>.
@ -321,6 +329,10 @@ include::authentication/pki-realm.asciidoc[]
include::authentication/file-realm.asciidoc[]
include::authentication/saml-realm.asciidoc[]
include::authentication/custom-realm.asciidoc[]
include::authentication/user-cache.asciidoc[]
include::authentication/saml-guide.asciidoc[]

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@ -0,0 +1,815 @@
[[saml-guide]]
== Configuring SAML Single-Sign-On on the Elastic Stack
The Elastic Stack supports SAML single-sign-on (SSO) into {kib}, using {es} as
a backend service. In SAML terminology, the Elastic Stack is operating as a
_Service Provider_.
The other component that is needed to enable SAML single-sign-on is the
_Identity Provider_, which is a service that handles your credentials and
performs that actual authentication of users.
If you are interested in configuring SSO into {kib}, then you will need to
provide {es} with information about your _Identity Provider_, and you will need
to register the Elastic Stack as a known _Service Provider_ within that
Identity Provider. There are also a few configuration changes that are
required in {kib} to activate the SAML authentication provider.
NOTE: The SAML support in {kib} is designed on the expectation that it will be
the primary (or sole) authentication method for users of that {kib} instance.
Once you enable SAML authentication in {kib} it will affect all users who try
to login. The <<saml-kibana>> section provides more detail about how this works.
=== The Identity Provider
The Elastic Stack supports the SAML 2.0 _Web Browser SSO_ and the SAML
2.0 _Single Logout_ profiles and can integrate with any Identity Provider (IdP)
that supports at least the SAML 2.0 _Web Browser SSO Profile_.
It has been tested with a number of popular IdP implementations.
This guide assumes that you have an existing IdP and wish to add {kib} as a
Service Provider.
The Elastic Stack uses a standard SAML _metadata_ document, in XML format that
defines the capabilities and features of your IdP. You should be able to
download or generate such a document within your IdP administration interface.
Download the IdP metadata document and store it within the `config` directory on
each {es} node. For the purposes of this guide, we will assume that you are
storing it as `config/saml/idp-metadata.xml`.
The IdP will have been assigned an identifier (_EntityID_ in SAML terminology)
which is most commonly expressed in _Uniform Resource Identifier_ (URI) form.
Your admin interface may tell you what this is, or you might need to
read the metadata document to find it - look for the `entityID` attribute on the
`EntityDescriptor` element.
Most IdPs will provide an appropriate metadata file with all the features that
the Elastic Stack requires, and should only require the configuration steps
described below. For completeness sake, the minimum requirements that the Elastic
Stack has for the IdP's metadata are:
- An `<EntityDescriptor>` with an `entityID` that matches the {es}
<<saml-create-realm, configuration>>
- An `<IDPSSODescriptor>` that supports the SAML 2.0 protocol
(`urn:oasis:names:tc:SAML:2.0:protocol`).
- At least one `<KeyDescriptor>` that is configured for _signing_ (that is, it
has `use="signing"` or leaves the `use` unspecified)
- A `<SingleSignOnService>` with binding of HTTP-Redirect
(`urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect`)
- If you wish to support <<saml-logout, Single Logout>>, a `<SingleLogoutService>`
with binding of HTTP-Redirect
(`urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect`)
The Elastic Stack requires that all messages from the IdP are signed.
For authentication `<Response>` messages, the signature may be applied to either
the response itself, or to the individual assertions.
For `<LogoutRequest>` messages, the message itself must be signed, and the
signature should be provided as a URL parameter, as required by the HTTP-Redirect
binding.
=== Configure {es} for SAML Authentication
There are five configuration steps to enable SAML authentication in {es}:
. Enable SSL/TLS for HTTP
. Enable the Token Service
. Create one or more SAML realms
. Configure role mappings
. Generate a SAML Metadata file for use by your Identity Provider _(optional)_
==== Enable TLS for HTTP
If your {es} cluster is operating in production mode, then you must
configure the HTTP interface to use SSL/TLS before you can enable SAML
authentication.
See <<enable-ssl>> for instructions on how to do this.
==== Enable the Token Service
The {es} SAML implementation makes use of the {es} Token Service. This service
is automatically enabled if you configure TLS on the HTTP interface, and can be
explicitly configured by including the following in your `elasticsearch.yml` file:
[source, yaml]
------------------------------------------------------------
xpack.security.authc.token.enabled: true
------------------------------------------------------------
[[saml-create-realm]]
==== Create a SAML Realm
SAML authentication is enabled by configuring a SAML realm within the
authentication chain for {es}.
This realm has a few mandatory settings, and a number of optional settings.
The available settings are described in detail in the
<<saml-settings, SAML realm documentation>>, this guide will walk you through
the most common settings.
Create a realm by adding the following to your `elasticsearch.yml`
configuration file. Each configuration value is explained below.
[source, yaml]
------------------------------------------------------------
xpack.security.authc.realms.saml1:
type: saml
order: 2
idp.metadata.path: saml/idp-metadata.xml
idp.entity_id: "https://sso.example.com/"
sp.entity_id: "https://kibana.example.com/"
sp.acs: "https://kibana.example.com/api/security/v1/saml"
sp.logout: "https://kibana.example.com/logout"
attributes.principal: "urn:oid:0.9.2342.19200300.100.1.1"
attributes.groups: "urn:oid:1.3.6.1.4.1.5923.1.5.1."
------------------------------------------------------------
IMPORTANT: SAML is used when authenticating via {kib}, but it is not an
effective means of authenticating directly to the {es} REST API. For this reason
we recommend that you include at least one additional realm such as the
<<native-realm, native realm>> in your authentication chain for use by API
clients.
The configuration values used in the example above are:
xpack.security.authc.realms.saml::
This defines a new authentication realm named "saml1".
See <<how-authc-works>> for more explanation of realms.
type:: The `type` must be `saml`
order::
You should define a unique order on each realm in your authentication chain.
It is recommended that the SAML realm be at the bottom of your authentication
chain (that is, that it has the _highest_ order).
idp.metadata.path::
This is the path to the metadata file that you saved for your Identity Provider.
The path that you enter here is relative to your `config/` directory.
{security} will automatically monitor this file for changes and will
reload the configuration whenever it is updated.
idp.entity_id::
This is the identifier (SAML EntityID) that your IdP uses.
It should match the `entityID` attribute within the metadata file.
sp.entity_id::
This is a unique identifier for your {kib} instance, expressed as a URI.
You will use this value when you add {kib} as a service provider within your IdP.
We recommend that you use the base URL for your {kib} instance as the entity ID.
sp.acs::
The _Assertion Consumer Service_ (ACS) endpoint is the URL within {kib} that accepts
authentication messages from the IdP.
This ACS endpoint supports the SAML HTTP-POST binding only.
It must be a URL that is accessible from the web browser of the user who is
attempting to login to {kib}, it does not need to be directly accessible by {es}
or the IdP.
The correct value may vary depending on how you have installed {kib} and
whether there are any proxies involved, but it will typically be
`${kibana-url}/api/security/v1/saml` where _${kibana-url}_ is the base URL for
your {kib} instance.
sp.logout::
This is the URL within {kib} that accepts logout messages from the IdP.
Like the `sp.acs` URL, it must be accessible from the web browser, but does
not need to be directly accessible by {es} or the IdP. The correct value may
vary depending on how you have installed {kib} and whether there are any
proxies involved, but it will typically be `${kibana-url}/logout` where
_${kibana-url}_ is the base URL for your {kib} instance.
attribute.principal:: See <<saml-attribute-mapping>>.
attribute.groups:: See <<saml-attribute-mapping>>.
[[saml-attribute-mapping]]
==== Attribute Mapping
When a user connects to {kib} through your Identity Provider, the Identity
Provider will supply a SAML Assertion about the user. The assertion will contain
an _Authentication Statement_ indicating that the user has successfully
authenticated to the IdP and one ore more _Attribute Statements_ that will
include _Attributes_ for the user.
These attributes may include such things as:
- the user's username
- the user's email address
- the user's groups or roles
Attributes in SAML are named using a URI such as
`urn:oid:0.9.2342.19200300.100.1.1` or
`http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn`, and have one or
more values associated with them.
These attribute identifiers vary between IdPs, and most IdPs offer ways to
customise the URIs and their associated value.
{es} uses these attributes to infer information about the user who has
logged in, and they can be used for role mapping (below).
In order for these attributes to be useful, {es} and the IdP need to have a
common via for the names of the attributes. This is done manually, by
configuring the IdP and the {security} SAML realm to use the same URI name for
each logical user attribute.
The recommended steps for configuring these SAML attributes are as follows:
. Consult your IdP to see what user attributes it can provide.
This varies greatly between providers, but you should be able to obtain a list
from the documentation, or from your local admin.
. Read through the list of <<saml-user-properties, user properties>> that {es}
supports, and decide which of them are useful to you, and can be provided by
your IdP. At a _minimum_, the `principal` attribute is required.
. Configure your IdP to "release" those attributes to your {kib} SAML service
provider. This process varies by provider - some will provide a user interface
for this, while others may require that you edit configuration files.
Usually the IdP (or your local administrator) will have suggestions about what
URI to use for each attribute. You can simply accept those suggestions, as the
{es} service is entirely configurable and does not require that any specific
URIs are used.
. Configure the SAML realm in {es} to associate the {es} user properties (see
<<saml-user-properties, the listing>> below), to the URIs that you configured
in your IdP. In the example above, we have configured the `principal` and
`groups` attributes.
===== Special Attribute Names
In general, {es} expects that the configured value for an attribute will be a
URI such as `urn:oid:0.9.2342.19200300.100.1.1`, however there are some
additional names that can be used:
`nameid`::
This uses the SAML `NamedID` value instead of a SAML attribute. SAML
`NameID` elements are an optional, but frequently provided, field within a
SAML Assertion that the IdP may use to identify the Subject of that
Assertion. In some cases the `NameID` will relate to the user's login
identifier (username) wihin the IdP, but in many cases they will be
internally generated identifiers that have no obvious meaning outside
of the IdP.
`nameid:persistent`::
This uses the SAML `NameID` value, but only if the NameID format is
`urn:oasis:names:tc:SAML:2.0:nameid-format:persistent`.
A SAML `NameID` element has an optional `Format` attribute that indicates
the semantics of the provided name. It is common for IdPs to be configured
with "transient" NameIDs that present a new identifier for each session.
Since it is rarely useful to use a transient NameID as part of an attribute
mapping, the "nameid:persistent" attribute name can be used as a safety
mechanism that will cause an error if you attempt to map from a `NameID`
that does not have a persistent value.
_friendlyName_::
A SAML attribute may have a _friendlyName_ in addition to its URI based name.
For example the attribute with a name of `urn:oid:0.9.2342.19200300.100.1.1`
might also have a friendlyName of `uid`.
You may use these friendly names within an attribute mapping, but it is
recommended that you use the URI based names, as friendlyNames are neither
standardized or mandatory.
The example below configures a realm to use a persistent nameid for the principal,
and the attribute with the friendlyName "roles" for the user's groups.
[source, yaml]
------------------------------------------------------------
xpack.security.authc.realms.saml1:
type: saml
order: 2
idp.metadata.path: saml/idp-metadata.xml
idp.entity_id: "https://sso.example.com/"
sp.entity_id: "https://kibana.example.com/"
sp.acs: "https://kibana.example.com/api/security/v1/saml"
attributes.principal: "nameid:persistent"
attributes.groups: "roles"
------------------------------------------------------------
[[saml-user-properties]]
===== {es} User Properties
The {es} SAML realm can be configured to map SAML `attributes` to the
following properties on the authenticated user:
principal:: _(Required)_
This is the _username_ that will be applied to a user that authenticates
against this realm.
The `principal` appears in places such as the {es} audit logs.
groups:: _(Recommended)_
If you wish to use your IdP's concept of groups or roles as the basis for a
user's {es} privileges, you should map them with this attribute.
The `groups` are passed directly to your
<<saml-role-mapping, role mapping rules>>
name:: _(Optional)_ The user's full name.
mail:: _(Optional)_ The user's email address.
dn:: _(Optional)_ The user's X.500 _Distinguished Name_.
===== Extracting partial values from SAML Attributes
There are some occasions where the IdP's attribute may contain more information
than you wish to use within {es}. A common example of this is one where the
IdP works exclusively with email addresses, but you would like the user's
`principal` to use the _local-name_ part of the email address.
For example if their email address was `james.wong@staff.example.com`, then you
would like their principal to simply be `james.wong`.
This can be achieved using the `attribute_patterns` setting in the {es}
realm, as demonstrated in the realm configuration below:
[source, yaml]
------------------------------------------------------------
xpack.security.authc.realms.saml1:
type: saml
order: 2
idp.metadata.path: saml/idp-metadata.xml
idp.entity_id: "https://sso.example.com/"
sp.entity_id: "https://kibana.example.com/"
sp.acs: "https://kibana.example.com/api/security/v1/saml"
attributes.principal: "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress"
attribute_patterns.principal: "^([^@]+)@staff.example.com$"
------------------------------------------------------------
In this case, the user's `principal` is mapped from an email attribute, but a
regular expression is applied to the value before it is assigned to the user.
If the regular expression matches, then the result of the first group is used as
effective value. If the regular expression does not match then the attribute
mapping fails.
In this example, the email address must belong to the `staff.example.com` domain,
and then the local-part (anything before the `@`) is used as the principal.
Any users who try to login using a different email domain will fail because the
regular expression will not match against their email address, and thus their
principal attribute - which is mandatory - will not be populated.
IMPORTANT: Small mistakes in these regular expressions can have significant
security consequences. For example, if we accidentally left off the trailing
`$` from the example above, then we would match any email address where the
domain starts with `staff.example.com`, and this would accept an email
address such as `admin@staff.example.com.attacker.net`. It is important that
you make sure your regular expressions are as precise as possible so that
you do not inadvertently open an avenue for user impersonation attacks.
[[saml-logout]]
==== SAML Logout
The SAML protocol supports the concept of Single Logout (SLO).
The level of support for SLO varies between Identity Providers.
You should consult the documentation for your IdP to determine what Logout
services it offers.
By default the Elastic Stack will support SAML SLO if the following are true:
- Your IdP metadata specifies that the IdP offers a SLO service
- You configure `sp.logout`
- The setting `idp.use_single_logout` is not `false`
===== IdP SLO Service
One of the values that {es} reads from the IdP's SAML metadata is the
`<SingleLogoutService>`. In order for Single Logout to work with the Elastic
stack, {es} requires that this exist and support a binding of
`urn:oasis:names:tc:SAML:2.0:bindings:HTTP-Redirect`.
The Elastic Stack will send both `<LogoutRequest>` and `<LogoutResponse>`
messages to this service as appropriate.
===== The sp.logout setting
The {es} realm setting `sp.logout` specifies a URL in {kib} to which the IdP can
send both `<LogoutRequest>` and `<LogoutResponse>` messages. This service uses
the SAML HTTP-Redirect binding.
{es} will process `<LogoutRequest>` messages, and perform a global signout that
invalidates any existing {es} security tokens that are associated with the
provided SAML session.
If you do not configure a value for `sp.logout`, {es} will refuse all
`<LogoutRequest>` messages.
NOTE: It is common for IdPs to require that `LogoutRequest` messages be signed,
so you may need to configure <<saml-enc-sign,signing credentials>>.
===== The idp.use_single_logout setting
If your IdP provides a `<SingleLogoutService>` but you do not wish to use it,
you can configure `idp.use_single_logout: false` in your SAML realm, and {es}
will ignore the SLO service that your IdP provides. In this case, when a user
logs out of {kib} it will invalidate their {es} session (security token), but
will not perform any logout at the IdP.
===== Using {kib} without Single Logout
If your IdP does not support Single Logout, or you choose not to use it, then
{kib} will perform a "local logout" only.
This means that {kib} will invalidate the session token it is using to
communicate with {es}, but will not be able to perform any sort of invalidation
of the Identity Provider session. In most cases this will mean that {kib} users
are still considered to be logged in to the IdP. Consequently, if the user
navigates to the {kib} landing page, they will be automatically reauthenticated,
and will commence a new {kib} session without needing to enter any credentials.
The possible solutions to this problem are:
- Ask your IdP administrator or vendor to provide a Single Logout service
- If your Idp does provide a Single Logout Service, make sure it is included in
the IdP metadata file, and do _not_ set `idp.use_single_logout` to `false`.
- Advise your users to close their browser after logging out of {kib}
- Enable the `force_authn` setting on your SAML realm. This setting causes the
Elastic Stack to request fresh authentication from the IdP every time a user
attempts to log into {kib}.
This setting defaults to `false` because it can be a more cumbersome user
experience, but it can also be an effective protection to stop users
piggy-backing on existing IdP sessions.
[[saml-enc-sign]]
==== Encryption and Signing
The Elastic Stack supports generating signed SAML messages (for authentication
and/or logout), verifying signed SAML messages from the IdP (for both
authentication and logout) and can process encrypted content.
You can configure {es} for signing, encryption or both, with the same
or separate keys used for each of those.
The Elastic Stack uses X.509 certificates with RSA private keys for SAML
cryptography. These keys can be generated using any standard SSL tool, including
the `certutil` tool that ships with X-Pack.
Your IdP may require that the Elastic Stack have a cryptographic key for signing
SAML messages, and that you provide the corresponding signing certificate within
the Service Provider configuration (either within the Elastic Stack SAML
metadata file or manually configured within the IdP administration interface).
While most IdPs do not expected authentication requests to be signed, it is
commonly the case that signatures are required for logout requests. Your IdP
will validate these signatures against the signing certificate that has been
configured for the Elastic Stack Service Provider.
Encryption certificates are rarely needed, but the Elastic Stack supports them
for cases where IdPs or local policies mandate their use.
===== Generating certificates and keys.
{es} supports certificates and keys in either PEM, PKCS#12 or JKS format.
Some Identity Providers are more restrictive in the formats they support, and
will require you to provide the certificates as a file in a particular format.
You should consult the documentation for your IdP to determine what formats they
support. Since PEM format is the most commonly supported format, the examples
below will generate certificates in that format.
Using the {ref}/certutil.html[`certutil`] tool, you can generate a signing
certificate with the following command:
[source, sh]
--------------------------------------------------
bin/x-pack/certutil cert -pem -days 1100 -name saml-sign -out saml-sign.zip
--------------------------------------------------
This will
- generate a certificate and key pair (the `cert` subcommand)
- create the files in PEM format (`-pem` option)
- generate a certificate that is valid for 3 years (`-days 1100`)
- name the certificate `saml-sign` (`-name` option)
- save the certificate and key in the `saml-sign.zip` file (`-out` option)
The generated zip archive will contain 3 files:
- `saml-sign.crt`, the public certificate to be used for signing
- `saml-sign.key`, the private key for the certificate
- `ca.crt`, a CA certificate that is not need, and can be ignored.
Encryption certificates can be generated with the same process.
===== Configuring {es} for Signing
By default, {security} will sign _all_ outgoing SAML messages if a signing
key has been configured.
If you wish to use *PEM formatted* keys and certificates for signing, then
you should configure the following settings on the SAML realm:
`signing.certificate`::
The path to the PEM formatted certificate file. e.g. `saml/saml-sign.crt`
`signing.key`::
The path to the PEM formatted key file. e.g. `saml/saml-sign.key`
`signing.secure_key_passphrase`::
The passphrase for the key, if the file is encypted. This is a
{ref}/secure-settings.html[secure setting] that must be set with the
`elasticsearch-keystore` tool.
If you wish to use *PKCS#12 formatted* files or a *Java Keystore* for
signing, then you should configure the following settings on the SAML realm:
`signing.keystore.path`::
The path to the PKCS#12 or JKS keystore. e.g. `saml/saml-sign.p12`
`signing.keystore.alias`::
The alias of the key within the keystore. e.g. `signing-key`
`signing.keystore.secure_password`::
The passphrase for the keystore, if the file is encypted. This is a
{ref}/secure-settings.html[secure setting] that must be set with the
`elasticsearch-keystore` tool.
If you wish to sign some, but not all outgoing *SAML messages*, then you
should configure the following setting on the SAML realm:
`signing.saml_messages`::
A list of message types to sign. A message type is identified by the
_local name_ of the XML element used for the message. Supported values
are: `AuthnRequest`, `LogoutRequest` and `LogoutResponse`.
===== Configuring {es} for Encrypted Messages
{security} supports a single key for message decryption. If a key is
configured, then {security} will attempt to use it to decrypt
`EncryptedAssertion` and `EncryptedAttribute` elements in Authentication
responses, and `EncryptedID` elements in Logout requests.
{security} will reject any SAML message that contains an `EncryptedAssertion`
that cannot be decrypted.
If an `Assertion` contains both encrypted and plain-text attributes, then
failure to decrypt the encrypted attributes will not cause an automatic
rejection. Rather, {security} will process the available plain-text attributes
(and any `EncryptedAttributes` that could be decrypted).
If you wish to use *PEM formatted* keys and certificates for SAML encryption,
then you should configure the following settings on the SAML realm:
`encryption.certificate`::
The path to the PEM formatted certificate file. e.g. `saml/saml-crypt.crt`
`encryption.key`::
The path to the PEM formatted key file. e.g. `saml/saml-crypt.key`
`encryption.secure_key_passphrase`::
The passphrase for the key, if the file is encypted. This is a
{ref}/secure-settings.html[secure setting] that must be set with the
`elasticsearch-keystore` tool.
If you wish to use *PKCS#12 formatted* files or a *Java Keystore* for SAML
encryption, then you should configure the following settings on the SAML realm:
`encryption.keystore.path`::
The path to the PKCS#12 or JKS keystore. e.g. `saml/saml-crypt.p12`
`encryption.keystore.alias`::
The alias of the key within the keystore. e.g. `encryption-key`
`encryption.keystore.secure_password`::
The passphrase for the keystore, if the file is encypted. This is a
{ref}/secure-settings.html[secure setting] that must be set with the
`elasticsearch-keystore` tool.
=== Generating SP metadata
Some Identity Providers support importing a metadata file from the Service
Provider. This will automatically configure many of the integration options
between the IdP and the SP.
The Elastic Stack supports generating such a metadata file using the
`bin/x-pack/saml-metadata` command in your {es} directory.
The {ref}/saml-metadata.html[documentation for the saml-metadata utility]
describes how to run it, and the available command line options.
[[saml-role-mapping]]
=== Configuring Role Mappings
When a user authenticates using SAML, they are identified to the Elastic Stack,
but this does not automatically grant them access to perform any actions or
access any data.
Your SAML users cannot do anything until they are mapped to X-Pack Security
roles. This mapping is performed through the
{ref}/security-api-role-mapping.html[role-mapping API]
This is an example of a simple role mapping that grants the `kibana_user` role
to any user who authenticates against the `saml1` realm:
[source,js]
--------------------------------------------------
PUT /_xpack/security/role_mapping/saml-kibana
{
"roles": [ "kibana_user" ],
"enabled": true,
"rules": {
"field": { "realm.name": "saml1" }
}
}
--------------------------------------------------
// CONSOLE
// TEST
The attributes that are mapped via the realm configuration are used to process
role mapping rules, and these rules determine which roles a user is granted.
The <<mapping-roles-rule-field, user fields>> that are provided to the role
mapping are derived from the SAML attributes as follows:
- `username`: The `principal` attribute
- `dn`: The `dn` attribute
- `groups`: The `groups` attribute
- `metadata`: See <<saml-user-metadata>>
If your IdP has the ability to provide groups or roles to Service Providers,
then you should map this SAML attribute to the `attributes.groups` setting in
the {es} realm, and then make use of it in a role mapping as per the example
below.
This mapping grants the {es} `finance_data` role, to any users who authenticate
via the `saml1` realm with the `finance-team` group.
[source,js]
--------------------------------------------------
PUT /_xpack/security/role_mapping/saml-finance
{
"roles": [ "finance_data" ],
"enabled": true,
"rules": { "all": [
{ "field": { "realm.name": "saml1" } },
{ "field": { "groups": "finance-team" } }
] }
}
--------------------------------------------------
// CONSOLE
// TEST
[[saml-user-metadata]]
=== User Metadata
By default users who authenticate via SAML will have some additional metadata
fields.
- `saml_nameid` will be set to the value of the `NameID` element in the SAML
authentication response
- `saml_nameid_format` will be set to the full URI of the NameID's `format`
attribute
- Every SAML Attribute that is provided in the authentication response
(regardless of whether it is mapped to an {es} user property), will be added
as the metadata field `saml(name)` where "name" is the full URI name of the
attribute. For example `saml(urn:oid:0.9.2342.19200300.100.1.3)`.
- For every SAML Attribute that has a _friendlyName_, will also be added as the
metadata field `saml_friendlyName` where "name" is the full URI name of the
attribute. For example `saml_mail`.
This behaviour can be disabled by adding `populate_user_metadata: false` to as
a setting in the saml realm.
[[saml-kibana]]
=== Configuring {kib}
SAML authentication in {kib} requires a small number of additional settings
in addition to the standard {kib} security configuration. The
{kibana-ref}/using-kibana-with-security.html[{kib} security documentation]
provides details on the available configuration options that you can apply.
In particular, since your {es} nodes have been configured to use TLS on the HTTP
interface, you must configure {kib} to use a `https` URL to connect to {es}, and
you may need to configure `elasticsearch.ssl.certificateAuthorities` to trust
the certificates that {es} has been configured to use.
SAML authentication in {kib} is also subject to the
`xpack.security.sessionTimeout` setting that is described in the {kib} security
documentation, and you may wish to adjst this timeout to meet your local needs.
The two additional settings that are required for SAML support are shown below:
[source, yaml]
------------------------------------------------------------
xpack.security.authProviders: [saml]
server.xsrf.whitelist: [/api/security/v1/saml]
------------------------------------------------------------
The configuration values used in the example above are:
`xpack.security.authProviders`::
Set this to `[ saml ]` to instruct {kib} to use SAML SSO as the authentication
method.
`server.xsrf.whitelist`::
{kib} has in-built protection against _Cross Site Request Forgery_ attacks which
are designed to prevent the {kib} server from processing requests that
originated from outside the {kib} application.
In order to support SAML authentication messages that originate from your
Identity Provider, we need to explicitly _whitelist_ the SAML authentication URL
within {kib}, so that the {kib} server will not reject these external messages.
If your {kib} instance is behind a proxy, you may also need to add configuration
to tell {kib} how to form its public URL. This is needed because all SAML
messages are exchanged via the user's web browser, so {kib} needs to know what
URLs are used within the browser. In this case, the following settings should be
added to your `kibana.yml` configuration file:
[source, yaml]
------------------------------------------------------------
xpack.security.public:
protocol: https
hostname: kibana.proxy.com
port: 443
------------------------------------------------------------
`xpack.security.public.protocol`::
This is the protocol that the user's web browser uses to connect to the proxy.
Must be one of `http` or `https`. It is strongly recommended that you use the
`https` protocol for all access to {kib}.
`xpack.security.public.hostname`::
The fully qualified hostname that your users use to connect to the proxy server.
`xpack.security.public.port`::
The port number that your users use to connect to the proxy server (e.g. `80`
for `http` or `443` for `https`).
These values must be aligned with the URLs used in the {es} configuration for
`sp.acs` and `sp.logout`.
==== Supporting SAML and Basic authentication in {kib}
The SAML support in {kib} is designed on the expectation that it will be the
primary (or sole) authentication method for users of that {kib} instance.
However, it is possible to support both SAML and Basic authentication within a
single {kib} instance by setting `xpack.security.authProviders` as per the
example below:
[source, yaml]
------------------------------------------------------------
xpack.security.authProviders: [saml, basic]
------------------------------------------------------------
The order is important - this will _initiate_ SAML authentication for
unauthenticated users, but will _accept_ basic authentication.
If {kib} is configured in this way, then users who wish to login with a
username and password, can do so by directly accessing the `/login` page in
{kib}. This login will not use SAML credentials, and will rely on one of the
other security realms within {es}. Only users who have a username and password
for a configured {es} authentication realm will be able to login via this page.
Alternatively, when the `basic` authentication provider is enabled, you can
place a reverse proxy in front of {kib}, and configure it to send a basic
authentication header (`Authorization: Basic ....`) for each request.
If this header is present and valid, {kib} will not initiate the SAML
authentication process.
==== Operating multiple {kib} instances
If you wish to have multiple {kib} instances that authenticate against the same
{es} cluster, then each {kib} instance that is configured for SAML authentication,
requires its own SAML realm.
Each SAML realm must have its own unique Entity ID (`sp.entity_id`), and its own
_Assertion Consumer Service_ (`sp.acs`). Each {kib} instance will be mapped to
the correct realm by looking up the matching `sp.acs` value.
These realms may use the same Identity Provider, but are not required to.
The following is example of having 3 difference {kib} instances, 2 of which
use the same internal IdP, and another which uses a different IdP.
[source, yaml]
------------------------------------------------------------
xpack.security.authc.realms.saml_finance:
type: saml
order: 2
idp.metadata.path: saml/idp-metadata.xml
idp.entity_id: "https://sso.example.com/"
sp.entity_id: "https://kibana.finance.example.com/"
sp.acs: "https://kibana.finance.example.com/api/security/v1/saml"
sp.logout: "https://kibana.finance.example.com/logout"
attributes.principal: "urn:oid:0.9.2342.19200300.100.1.1"
attributes.groups: "urn:oid:1.3.6.1.4.1.5923.1.5.1."
xpack.security.authc.realms.saml_sales:
type: saml
order: 3
idp.metadata.path: saml/idp-metadata.xml
idp.entity_id: "https://sso.example.com/"
sp.entity_id: "https://kibana.sales.example.com/"
sp.acs: "https://kibana.sales.example.com/api/security/v1/saml"
sp.logout: "https://kibana.sales.example.com/logout"
attributes.principal: "urn:oid:0.9.2342.19200300.100.1.1"
attributes.groups: "urn:oid:1.3.6.1.4.1.5923.1.5.1."
xpack.security.authc.realms.saml_eng:
type: saml
order: 4
idp.metadata.path: saml/idp-external.xml
idp.entity_id: "https://engineering.sso.example.net/"
sp.entity_id: "https://kibana.engineering.example.com/"
sp.acs: "https://kibana.engineering.example.com/api/security/v1/saml"
sp.logout: "https://kibana.engineering.example.com/logout"
attributes.principal: "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn"
------------------------------------------------------------
It is possible to have one or more {kib} instances that use SAML, while other
instances use basic authentication against another realm type (e.g.
<<native-realm, Native>> or <<ldap-realm, LDAP>>).

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[[saml-realm]]
=== SAML Authentication
{security} supports user authentication using SAML Single Sign On.
{security} provides this support using the Web Browser SSO profile of the SAML
2.0 protocol.
This protocol is specifically designed to support authentication via an
interactive web browser, so it does not operate as a standard authentication
realm. Instead, {security} provides features in {kib} and {es} that work
together to enable interactive SAML sessions.
This means that the SAML realm is not suitable for use by standard REST clients.
If you configure a SAML realm for use in {kib}, you should also configure
another realm, such as the <<native-realm, native realm>> in your authentication
chain.
In order to simplify the process of configuring SAML authentication within the
Elastic Stack, there is a step-by-step guide to
<<saml-guide, Configuring Elasticsearch and Kibana to use SAML Single-Sign-On>>.
The remainder of this document will describe {es} specific configuration options
for SAML realms.
[[saml-settings]]
==== SAML Realm Settings
[cols="4,^3,10"]
|=======================
| Setting | Required | Description
| `type` | yes | Indicates the realm type. Must be set to `saml`.
| `order` | no | Indicates the priority of this realm within the realm chain.
Realms with a lower order are consulted first. Although not
required, we recommend explicitly setting this value when
you configure multiple realms. Defaults to `Integer.MAX_VALUE`.
| `enabled` | no | Indicates whether this realm is enabled or disabled. Enables
you to disable a realm without removing its configuration.
Defaults to `true`.
| `idp.entity_id` | yes | The Entity ID of the SAML Identity Provider
| `idp.metadata.path` | yes | The path (_recommended_) or URL to a SAML 2.0 metadata file
describing the capabilities and configuration of the Identity
Provider.
If a path is provided, then it is resolved relative to the
{es} config directory.
If a URL is provided, then it must be either a `file` URL or
a `https` URL.
{security} will automatically poll this metadata resource and
will reload the IdP configuration when changes are detected.
File based resources are polled at a frequency determined by
the global {es} `resource.reload.interval.high` setting, which
defaults to 5 seconds.
HTTPS resources are polled at a frequency determined by
the realm's `idp.metadata.http.refresh` setting.
| `idp.metadata.http.refresh` | no | Controls the frequency with which `https` metadata is checked
for changes. Defaults to 1 hour.
| `idp.use_single_logout` | no | Indicates whether to utilise the Identity Provider's Single
Logout service (if one exists in the IdP metadata file).
Defaults to `true`.
| `sp.entity_id` | yes | The Entity ID to use for this SAML Service Provider.
This should be entered as a URI. We recommend that you use the
base URL of your {kib} instance,
e.g. `https://kibana.example.com/`
| `sp.acs` | yes | The URL of the Assertion Consumer Service within {kib}.
Typically this will be the "api/security/v1/saml" endpoint of
your {kib} server,
e.g. `https://kibana.example.com/api/security/v1/saml`
| `sp.logout` | no | The URL of the Single Logout service within {kib}.
Typically this will be the "logout" endpoint of
your {kib} server,
e.g. `https://kibana.example.com/logout`
| `attributes.principal` | yes | The Name of the SAML attribute that should be used as the
{security} user's principal (username)
| `attributes.groups` | no | The Name of the SAML attribute that should be used to populate
{security} user's groups
| `attributes.name` | no | The Name of the SAML attribute that should be used to populate
{security} user's full name
| `attributes.mail` | no | The Name of the SAML attribute that should be used to populate
{security} user's email address
| `attributes.dn` | no | The Name of the SAML attribute that should be used to populate
{security} user's X.500 _Distinguished Name_
| `attribute_patterns.principal` | no | A java regular expression that is matched against the SAML attribute
specified by `attributes.pattern` before it is applied to the user's
_principal_ property.
The attribute value must match the pattern, and the value of the
first _capturing group_ is used as the principal.
e.g. `^([^@]+)@example.com$` matches email addresses from the
"example.com" domain and uses the local-part as the principal.
| `attribute_patterns.groups` | no | As per `attribute_patterns.principal`, but for the _group_ property.
| `attribute_patterns.name` | no | As per `attribute_patterns.principal`, but for the _name_ property.
| `attribute_patterns.mail` | no | As per `attribute_patterns.principal`, but for the _mail_ property.
| `attribute_patterns.dn` | no | As per `attribute_patterns.principal`, but for the _dn_ property.
| `nameid_format` | no | The NameID format that should be requested when asking the IdP
to authenticate the current user.
Defaults to requesting _transient_ names
(`urn:oasis:names:tc:SAML:2.0:nameid-format:transient`)
| `force_authn` | no | Whether to set the `ForceAuthn` attribute when requesting that the
IdP authenticate the current user. If this is set to `true`, the
IdP will be required to freshly establish the user's identity,
irrespective of any exiting sessions they may have.
Defaults to `false`.
| `populate_user_metadata` | no | Whether to populate the {es} user's metadata with the values that
are provided by the SAML attributes. Defaults to `true`.
| `allowed_clock_skew` | no | The maximum amount of skew that can be tolerated between the
IdP's clock and the {es} node's clock. Defaults to 3 minutes.
|=======================
===== SAML Realm Signing Settings
If a signing key is configured (i.e. is one of `signing.key` or `signing.keystore.path` has been set), then
{security} will sign outgoing SAML messages. Signing can be configured using the following settings.
|=======================
| Setting | Required | Description
| `signing.saml_messages` | no | A list of SAML message types that should be signed, or `*` to
sign all messages. Each element in the list should be the
local name of a SAML XML Element. Supported element types are
`AuthnRequest`, `LogoutRequest` and `LogoutResponse`.
Defaults to `*`.
| `signing.key` | no | Specifies the path to the PEM encoded private key to use for
SAML message signing.
`signing.key` and `signing.keystore.path` may not be used at
the same time.
| `signing.secure_key_passphrase` | no | ({ref}/secure-settings.html[Secure])
Specifies the passphrase to decrypt the PEM encoded private key if
it is encrypted.
| `signing.certificate` | no | Specifies the path to the PEM encoded certificate (or certificate
chain) that corresponds to the `signing.key`. This certificate
must also be included in the Service Provider metadata, or
manually configured within the IdP to allow for signature
validation.
May only be used if `signing.key` is set.
| `signing.keystore.path` | no | The path to the keystore that contains a private key and
certificate.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`signing.key` and `signing.keystore.path` may not be used at the
same time.
| `signing.keystore.type` | no | The type of the keystore. Must be one of "jks" or "PKCS12".
Defaults to "PKCS12" if the keystore path ends in ".p12", ".pfx" or
"pkcs12", otherwise uses "jks"
| `signing.keystore.alias` | no | Specifies the alias of the key within the keystore that should be
used for SAML message signing. Defaults to `key`.
| `signing.keystore.secure_password` | no | ({ref}/secure-settings.html[Secure]) The password to the keystore.
| `signing.keystore.secure_key_password` | no | ({ref}/secure-settings.html[Secure])
The password for the key in the keystore.
Defaults to the keystore password.
|=======================
===== SAML Realm Encryption Settings
If an encryption key is configured (i.e. is one of `encryption.key` or
`encryption.keystore.path` has been set), then {security} will publish
an encryption certificate when generating metadata, and will attempt to
decrypt incoming SAML content.
Encryption can be configured using the following settings.
|=======================
| Setting | Required | Description
| `encryption.key` | no | Specifies the path to the PEM encoded private key to use for
SAML message descryption.
`encryption.key` and `encryption.keystore.path` may not be used at
the same time.
| `encryption.secure_key_passphrase` | no | ({ref}/secure-settings.html[Secure])
Specifies the passphrase to decrypt the PEM encoded private key if
it is encrypted.
| `encryption.certificate` | no | Specifies the path to the PEM encoded certificate (or certificate
chain) that is associated with the `encryption.key`. This
certificate must also be included in the Service Provider metadata,
or manually configured within the IdP to enable message encryption.
May only be used if `encryption.key` is set.
| `encryption.keystore.path` | no | The path to the keystore that contains a private key and
certificate.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`encryption.key` and `encryption.keystore.path` may not be used at
the same time.
| `encryption.keystore.type` | no | The type of the keystore. Must be one of "jks" or "PKCS12".
Defaults to "PKCS12" if the keystore path ends in ".p12", ".pfx" or
"pkcs12", otherwise uses "jks"
| `encryption.keystore.alias` | no | Specifies the alias of the key within the keystore that should be
used for SAML message encryption. Defaults to `key`.
| `encryption.keystore.secure_password` | no | ({ref}/secure-settings.html[Secure]) The password to the keystore.
| `encryption.keystore.secure_key_password` | no | ({ref}/secure-settings.html[Secure])
The password for the key in the keystore.
|=======================
===== SAML Realm SSL Settings
If you are loading the IdP metadata over SSL/TLS (that is, `idp.metadata.path` is a URL using the `https` protocol)
Then the following settings may be used to configure SSL. If these are not specified, then the {xpack}
{ref}/security-settings.html#ssl-tls-settings[default SSL settings] are used.
These settings are not used for any purpose other than loading metadata over https.
|=======================
| Setting | Required | Description
| `ssl.key` | no | Specifies the path to the PEM encoded private key to use for http
client authentication.
`ssl.key` and `ssl.keystore.path` may not be used at the same time.
| `ssl.key_passphrase` | no | Specifies the passphrase to decrypt the PEM encoded private key if
it is encrypted. May not be used with `ssl.secure_key_passphrase`
| `ssl.secure_key_passphrase` | no | ({ref}/secure-settings.html[Secure])
Specifies the passphrase to decrypt the PEM encoded private key if
it is encrypted. May not be used with `ssl.key_passphrase`
| `ssl.certificate` | no | Specifies the path to the PEM encoded certificate (or certificate
chain) that goes with the key. May only be used if `ssl.key` is set.
| `ssl.certificate_authorities` | no | Specifies the paths to the PEM encoded certificate authority
certificates that should be trusted.
`ssl.certificate_authorities` and `ssl.truststore.path` may not be
used at the same time.
| `ssl.keystore.path` | no | The path to the keystore that contains a private key and
certificate.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`ssl.key` and `ssl.keystore.path` may not be used at the same time.
| `ssl.keystore.type` | no | The type of the keystore. Must be one of "jks" or "PKCS12".
Defaults to "PKCS12" if the keystore path ends in ".p12", ".pfx" or
"pkcs12", otherwise uses "jks"
| `ssl.keystore.password` | no | The password to the keystore.
May not be used with `ssl.keystore.secure_password`.
| `ssl.keystore.secure_password` | no | ({ref}/secure-settings.html[Secure]) The password to the keystore.
May not be used with `ssl.keystore.password`.
| `ssl.keystore.key_password` | no | The password for the key in the keystore.
Defaults to the keystore password.
May not be used with `ssl.keystore.secure_key_password`.
| `ssl.keystore.secure_key_password` | no | ({ref}/secure-settings.html[Secure])
The password for the key in the keystore.
Defaults to the keystore password.
May not be used with `ssl.keystore.key_password`.
| `ssl.truststore.path` | no | The path to the keystore that contains the certificates to trust.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`ssl.certificate_authorities` and `ssl.truststore.path` may not be
used at the same time.
| `ssl.truststore.type` | no | The type of the truststore. Must be one of "jks" or "PKCS12".
Defaults to "PKCS12" if the keystore path ends in ".p12", ".pfx" or
"pkcs12", otherwise uses "jks"
| `ssl.truststore.password` | no | The password to the truststore.
May not be used with `ssl.truststore.secure_password`.
| `ssl.truststore.secure_password` | no | ({ref}/secure-settings.html[Secure]) The password to the truststore.
May not be used with `ssl.truststore.password`.
| `ssl.verification_mode` | no | One of `full` (verify the hostname and the certicate path),
`certificate` (verify the certificate path, but not the hostname)
or `none` (perform no verification). Defaults to `full`.
| `ssl.supported_protocols` | no | Specifies the supported protocols for TLS/SSL.
| `ssl.cipher_suites` | no | Specifies the cipher suites that should be supported.
|=======================

3
docs/en/security/how-security-works.asciidoc
View File

@ -49,6 +49,9 @@ _realms_. {security} provides the following built-in realms:
With this realm, users are authenticated by usernames
and passwords. The users are managed via dedicated
tools that are provided by {xpack} on installation.
| `saml` | | | A realm that uses SAML 2.0 Web SSO. This realm is
designed to be used with {kib}.
|======
If none of the built-in realms meets your needs, you can also build your own

257
docs/en/settings/security-settings.asciidoc
View File

@ -622,6 +622,263 @@ Specifies the {xpack-ref}/security-files.html[location] of the
{xpack-ref}/mapping-roles.html[YAML role mapping configuration file].
Defaults to `CONFIG_DIR/x-pack/role_mapping.yml`.
[[ref-saml-settings]]
[float]
===== SAML Realm Settings
`idp.entity_id`::
The Entity ID of the SAML Identity Provider
`idp.metadata.path`::
The path _(recommended)_ or URL to a SAML 2.0 metadata file describing the
capabilities and configuration of the Identity Provider.
If a path is provided, then it is resolved relative to the {es} config
directory.
If a URL is provided, then it must be either a `file` URL or a `https` URL.
{security} will automatically poll this metadata resource and will reload
the IdP configuration when changes are detected.
File based resources are polled at a frequency determined by the global {es}
`resource.reload.interval.high` setting, which defaults to 5 seconds.
HTTPS resources are polled at a frequency determined by the realm's
`idp.metadata.http.refresh` setting.
`idp.metadata.http.refresh`::
Controls the frequency with which `https` metadata is checked for changes.
Defaults to `1h` (1 hour).
`idp.use_single_logout`::
Indicates whether to utilise the Identity Provider's Single Logout service
(if one exists in the IdP metadata file).
Defaults to `true`.
`sp.entity_id`::
The Entity ID to use for this SAML Service Provider, entered as a URI.
`sp.acs`::
The URL of the Assertion Consumer Service within {kib}.
`sp.logout`::
The URL of the Single Logout service within {kib}.
`attributes.principal`::
The Name of the SAML attribute that should be used as the {security} user's
principal (username)
`attributes.groups`::
The Name of the SAML attribute that should be used to populate {security}
user's groups
`attributes.name`::
The Name of the SAML attribute that should be used to populate {security}
user's full name
`attributes.mail`::
The Name of the SAML attribute that should be used to populate {security}
user's email address
`attributes.dn`::
The Name of the SAML attribute that should be used to populate {security}
user's X.500 _Distinguished Name_
`attribute_patterns.principal`::
A java regular expression that is matched against the SAML attribute specified
by `attributes.pattern` before it is applied to the user's _principal_ property.
The attribute value must match the pattern, and the value of the first
_capturing group_ is used as the principal.
`attribute_patterns.groups`::
As per `attribute_patterns.principal`, but for the _group_ property.
`attribute_patterns.name`::
As per `attribute_patterns.principal`, but for the _name_ property.
`attribute_patterns.mail`::
As per `attribute_patterns.principal`, but for the _mail_ property.
`attribute_patterns.dn`::
As per `attribute_patterns.principal`, but for the _dn_ property.
`nameid_format`::
The NameID format that should be requested when asking the IdP to authenticate
the current user.
Defaults to `urn:oasis:names:tc:SAML:2.0:nameid-format:transient`
`force_authn`::
Whether to set the `ForceAuthn` attribute when requesting that the IdP
authenticate the current user.
Defaults to `false`.
`populate_user_metadata`::
Whether to populate the {es} user's metadata with the values that are provided
by the SAML attributes.
Defaults to `true`.
`allowed_clock_skew`::
The maximum amount of skew that can be tolerated between the IdP's clock and the
{es} node's clock.
Defaults to `3m` (3 minutes).
`signing.saml_messages`::
A list of SAML message types that should be signed, or `*` to sign all messages.
Each element in the list should be the local name of a SAML XML Element.
Supported element types are `AuthnRequest`, `LogoutRequest` and `LogoutResponse`.
Only valid if `signing.key` or `signing.keystore.path` is also specified.
Defaults to `*`.
`signing.key`::
Specifies the path to the PEM encoded private key to use for SAML message signing.
`signing.key` and `signing.keystore.path` may not be used at the same time.
`signing.secure_key_passphrase` (<<secure-settings,Secure>>)::
Specifies the passphrase to decrypt the PEM encoded private key (`signing.key`)
if it is encrypted.
`signing.certificate`::
Specifies the path to the PEM encoded certificate that corresponds to the
`signing.key`. May only be used if `signing.key` is set.
`signing.keystore.path`::
The path to the keystore that contains a private key and certificate.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`signing.key` and `signing.keystore.path` may not be used at the same time.
`signing.keystore.type`::
The type of the keystore (`signing.keystore.path`).
Must be one of "jks" or "PKCS12". Defaults to "PKCS12" if the keystore path
ends in ".p12", ".pfx" or "pkcs12", otherwise uses "jks".
`signing.keystore.alias`::
Specifies the alias of the key within the keystore that should be
used for SAML message signing. Defaults to `key`.
`signing.keystore.secure_password` (<<secure-settings,Secure>>)::
The password to the keystore (`signing.keystore.path`).
`signing.keystore.secure_key_password` (<<secure-settings,Secure>>)::
The password for the key in the keystore (`signing.keystore.path`).
Defaults to the keystore password.
`encryption.key`::
Specifies the path to the PEM encoded private key to use for SAML message
decryption.
`encryption.key` and `encryption.keystore.path` may not be used at the same time.
`encryption.secure_key_passphrase` (<<secure-settings,Secure>>)::
Specifies the passphrase to decrypt the PEM encoded private key
(`encryption.key`) if it is encrypted.
`encryption.certificate`::
Specifies the path to the PEM encoded certificate chain that is associated with
the `encryption.key`. May only be used if `encryption.key` is set.
`encryption.keystore.path`::
The path to the keystore that contains a private key and certificate.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`encryption.key` and `encryption.keystore.path` may not be used at the same time.
`encryption.keystore.type`::
The type of the keystore (`encryption.keystore.path`).
Must be one of "jks" or "PKCS12". Defaults to "PKCS12" if the keystore path
ends in ".p12", ".pfx" or "pkcs12", otherwise uses "jks".
`encryption.keystore.alias`::
Specifies the alias of the key within the keystore (`encryption.keystore.path`)
that should be used for SAML message decryption. Defaults to `key`.
`encryption.keystore.secure_password` (<<secure-settings,Secure>>)::
The password to the keystore (`encryption.keystore.path`).
`encryption.keystore.secure_key_password` (<<secure-settings,Secure>>)::
The password for the key in the keystore (`encryption.keystore.path`) .
`ssl.key`::
If retrieving IDP metadata via https (see `idp.metadata.path`), specifies the
path to the PEM encoded private key to use for http client authentication (if
required). `ssl.key` and `ssl.keystore.path` may not be used at the same time.
`ssl.key_passphrase`::
If retrieving IDP metadata via https (see `idp.metadata.path`), specifies the
passphrase to decrypt the PEM encoded private key (`ssl.key`) if it is
encrypted. May not be used with `ssl.secure_key_passphrase`
`ssl.secure_key_passphrase` (<<secure-settings,Secure>>)::
If retrieving IDP metadata via https (see `idp.metadata.path`), specifies the
passphrase to decrypt the PEM encoded private key (`ssl.key`) if it is
encrypted. May not be used with `ssl.key_passphrase`
`ssl.certificate`::
If retrieving IDP metadata via https (see `idp.metadata.path`), specifies the
path to the PEM encoded certificate (or certificate chain) that is associated
with the key (`ssl.key`). May only be used if `ssl.key` is set.
`ssl.certificate_authorities`::
If retrieving IDP metadata via https (see `idp.metadata.path`), specifies the
paths to the PEM encoded certificate authority certificates that should be
trusted. `ssl.certificate_authorities` and `ssl.truststore.path` may not be
used at the same time.
`ssl.keystore.path`::
If retrieving IDP metadata via https (see `idp.metadata.path`), the path to
the keystore that contains a private key and certificate.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`ssl.key` and `ssl.keystore.path` may not be used at the same time.
`ssl.keystore.type`::
The type of the keystore (`ssl.keystore.path`). Must be one of "jks" or "PKCS12".
Defaults to "PKCS12" if the keystore path ends in ".p12", ".pfx" or "pkcs12",
otherwise uses "jks"
`ssl.keystore.password`::
The password to the keystore (`ssl.keystore.path`).
May not be used with `ssl.keystore.secure_password`.
`ssl.keystore.secure_password` (<<secure-settings,Secure>>)::
The password to the keystore (`ssl.keystore.path`).
May not be used with `ssl.keystore.password`.
`ssl.keystore.key_password`::
The password for the key in the keystore (`ssl.keystore.path`).
Defaults to the keystore password.
May not be used with `ssl.keystore.secure_key_password`.
`ssl.keystore.secure_key_password` (<<secure-settings,Secure>>)::
The password for the key in the keystore (`ssl.keystore.path`).
Defaults to the keystore password.
May not be used with `ssl.keystore.key_password`.
`ssl.truststore.path`::
If retrieving IDP metadata via https (see `idp.metadata.path`), the path to the
keystore that contains the certificates to trust.
Must be either a Java Keystore (jks) or a PKCS#12 file.
`ssl.certificate_authorities` and `ssl.truststore.path` may not be used at the
same time.
`ssl.truststore.type`::
The type of the truststore (`ssl.truststore.path`). Must be one of "jks" or "PKCS12".
Defaults to "PKCS12" if the keystore path ends in ".p12", ".pfx" or "pkcs12",
otherwise uses "jks"
`ssl.truststore.password`::
The password to the truststore (`ssl.truststore.path`).
May not be used with `ssl.truststore.secure_password`.
`ssl.truststore.secure_password` (<<secure-settings,Secure>>)::
The password to the truststore (`ssl.truststore.path`).
May not be used with `ssl.truststore.password`.
`ssl.verification_mode`::
If retrieving IDP metadata via https (see `idp.metadata.path`), one of `full`
(verify the hostname and the certicate path), `certificate` (verify the
certificate path, but not the hostname) or `none` (perform no verification).
Defaults to `full`.
`ssl.supported_protocols`::
If retrieving IDP metadata via https (see `idp.metadata.path`), specifies the
supported protocols for TLS/SSL.
`ssl.cipher_suites`::
If retrieving IDP metadata via https (see `idp.metadata.path`), specifies the
cipher suites that should be supported.
[float]
[[ssl-tls-settings]]
==== Default TLS/SSL Settings

2
docs/en/setup/docker.asciidoc
View File

@ -269,7 +269,7 @@ accomplished with the parameter:
--------------------------------------------
IMPORTANT: The container **runs {es} as user `elasticsearch` using
uid:gid `1000:1000`**. Bind mounted host directories and files, such as
`custom_elasticsearch.yml` above, **need to be accessible by this user**. For the https://www.elastic.co/guide/en/elasticsearch/reference/current/important-settings.html#path-settings[data and log dirs],
`custom_elasticsearch.yml` above, **need to be accessible by this user**. For the <<path-settings, data and log dirs>>,
such as `/usr/share/elasticsearch/data`, write access is required as well.
Also see note 1 below.

4
plugin/ml/src/test/java/org/elasticsearch/xpack/ml/integration/MlDistributedFailureIT.java
View File

@ -12,6 +12,7 @@ import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.common.CheckedRunnable;
import org.elasticsearch.common.bytes.BytesReference;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.DeprecationHandler;
import org.elasticsearch.common.xcontent.NamedXContentRegistry;
import org.elasticsearch.common.xcontent.XContentHelper;
import org.elasticsearch.common.xcontent.XContentParser;
@ -247,7 +248,8 @@ public class MlDistributedFailureIT extends BaseMlIntegTestCase {
}
BytesReference source = searchResponse.getHits().getHits()[0].getSourceRef();
try (XContentParser parser = XContentHelper.createParser(NamedXContentRegistry.EMPTY, source, XContentType.JSON)) {
try (XContentParser parser = XContentHelper.createParser(NamedXContentRegistry.EMPTY,
DeprecationHandler.THROW_UNSUPPORTED_OPERATION, source, XContentType.JSON)) {
return DataCounts.PARSER.apply(parser, null);
} catch (IOException e) {
throw new RuntimeException(e);

19
plugin/security/src/main/java/org/elasticsearch/xpack/security/authc/support/UserRoleMapper.java
View File

@ -7,9 +7,13 @@ package org.elasticsearch.xpack.security.authc.support;
import com.unboundid.ldap.sdk.DN;
import com.unboundid.ldap.sdk.LDAPException;
import com.unboundid.util.LDAPSDKUsageException;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.message.ParameterizedMessage;
import org.apache.lucene.util.automaton.CharacterRunAutomaton;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.xpack.core.security.authc.RealmConfig;
import org.elasticsearch.xpack.core.security.authc.support.mapper.expressiondsl.ExpressionModel;
import org.elasticsearch.xpack.core.security.authc.support.mapper.expressiondsl.FieldExpression;
@ -78,7 +82,7 @@ public interface UserRoleMapper {
model.defineField("dn", dn, new DistinguishedNamePredicate(dn));
model.defineField("groups", groups, groups.stream()
.<Predicate<FieldExpression.FieldValue>>map(DistinguishedNamePredicate::new)
.reduce((a, b) -> a.or(b))
.reduce(Predicate::or)
.orElse(fieldValue -> false)
);
metadata.keySet().forEach(k -> model.defineField("metadata." + k, metadata.get(k)));
@ -155,6 +159,8 @@ public interface UserRoleMapper {
*
*/
class DistinguishedNamePredicate implements Predicate<FieldExpression.FieldValue> {
private static final Logger LOGGER = Loggers.getLogger(DistinguishedNamePredicate.class);
private final String string;
private final DN dn;
@ -164,12 +170,19 @@ public interface UserRoleMapper {
}
private static DN parseDn(String string) {
if (string == null) {
return null;
} else {
try {
return new DN(string);
} catch (LDAPException e) {
} catch (LDAPException | LDAPSDKUsageException e) {
if (LOGGER.isTraceEnabled()) {
LOGGER.trace(new ParameterizedMessage("failed to parse [{}] as a DN", string), e);
}
return null;
}
}
}
@Override
public String toString() {
@ -227,7 +240,7 @@ public interface UserRoleMapper {
}
return testString.equalsIgnoreCase(dn.toNormalizedString());
}
return false;
return string == null && fieldValue.getValue() == null;
}
}
}

24
plugin/security/src/test/java/org/elasticsearch/xpack/security/authc/support/DistinguishedNamePredicateTests.java
View File

@ -48,6 +48,30 @@ public class DistinguishedNamePredicateTests extends ESTestCase {
assertPredicate(predicate, null, false);
}
public void testParsingMalformedInput() {
Predicate<FieldValue> predicate = new UserRoleMapper.DistinguishedNamePredicate(null);
assertPredicate(predicate, null, true);
assertPredicate(predicate, "", false);
assertPredicate(predicate, randomAlphaOfLengthBetween(1, 8), false);
predicate = new UserRoleMapper.DistinguishedNamePredicate("");
assertPredicate(predicate, null, false);
assertPredicate(predicate, "", true);
assertPredicate(predicate, randomAlphaOfLengthBetween(1, 8), false);
predicate = new UserRoleMapper.DistinguishedNamePredicate("foo=");
assertPredicate(predicate, null, false);
assertPredicate(predicate, "foo", false);
assertPredicate(predicate, "foo=", true);
assertPredicate(predicate, randomAlphaOfLengthBetween(5, 12), false);
predicate = new UserRoleMapper.DistinguishedNamePredicate("=bar");
assertPredicate(predicate, null, false);
assertPredicate(predicate, "bar", false);
assertPredicate(predicate, "=bar", true);
assertPredicate(predicate, randomAlphaOfLengthBetween(5, 12), false);
}
private void assertPredicate(Predicate<FieldValue> predicate, Object value, boolean expected) {
assertThat("Predicate [" + predicate + "] match [" + value + "]", predicate.test(new FieldValue(value)), equalTo(expected));
}