* Added support for iam_tags for AWS secret roles
This change allows iam_users generated by the secrets engine
to add custom tags in the form of key-value pairs to users
that are created.
Allows vault roles to be associated with IAM groups in the AWS
secrets engine, since IAM groups are a recommended way to manage
IAM user policies. IAM users generated against a vault role will
be added to the IAM Groups. For a credential type of
`assumed_role` or `federation_token`, the policies sent to the
corresponding AWS call (sts:AssumeRole or sts:GetFederation) will
be the policies from each group in `iam_groups` combined with the
`policy_document` and `policy_arns` parameters.
Co-authored-by: Jim Kalafut <jkalafut@hashicorp.com>
* secrets/aws: Support permissions boundaries on iam_user creds
This allows configuring Vault to attach a permissions boundary policy to
IAM users that it creates, configured on a per-Vault-role basis.
* Fix indentation of policy in docs
Use spaces instead of tabs
* secret/aws: Pass policy ARNs to AssumedRole and FederationToken roles
AWS now allows you to pass policy ARNs as well as, and in addition to,
policy documents for AssumeRole and GetFederationToken (see
https://aws.amazon.com/about-aws/whats-new/2019/05/session-permissions/).
Vault already collects policy ARNs for iam_user credential types; now it
will allow policy ARNs for assumed_role and federation_token credential
types and plumb them through to the appropriate AWS calls.
This brings along a minor breaking change. Vault roles of the
federation_token credential type are now required to have either a
policy_document or a policy_arns specified. This was implicit
previously; a missing policy_document would result in a validation error
from the AWS SDK when retrieving credentials. However, it would still
allow creating a role that didn't have a policy_document specified and
then later specifying it, after which retrieving the AWS credentials
would work. Similar workflows in which the Vault role didn't have a
policy_document specified for some period of time, such as deleting the
policy_document and then later adding it back, would also have worked
previously but will now be broken.
The reason for this breaking change is because a credential_type of
federation_token without either a policy_document or policy_arns
specified will return credentials that have equivalent permissions to
the credentials the Vault server itself is using. This is quite
dangerous (e.g., it could allow Vault clients access to retrieve
credentials that could modify Vault's underlying storage) and so should
be discouraged. This scenario is still possible when passing in an
appropriate policy_document or policy_arns parameter, but clients should
be explicitly aware of what they are doing and opt in to it by passing
in the appropriate role parameters.
* Error out on dangerous federation token retrieval
The AWS secrets role code now disallows creation of a dangerous role
configuration; however, pre-existing roles could have existed that would
trigger this now-dangerous code path, so also adding a check for this
configuration at credential retrieval time.
* Run makefmt
* Fix tests
* Fix comments/docs
This refactors role validation for the AWS secrets engine to be in a
separate method. Previously, all validation was interspersed with the
parsing of parameters when creating/updating a role, which led to a high
degree of complexity. Now, all validation is centralized which makes it
easier to understand and also easier to test (and so a number of test
cases have been added).
* Added role-option max_sts_ttl to cap TTL for AWS STS credentials.
* Allow for setting max_sts_ttl to 0 after it has been set already.
* Fixed message in error response for default_sts_ttl > max_sts_ttl.
* Allow specifying role-default TTLs in AWS secret engine
* Add an acceptance test
* Add docs for AWS secret role-default TTLs
* Rename default_ttl to default_sts_ttl
* Return default_ttl as int64 instead of time.Duration
* Fix broken tests
The merge of #5383 broke the tests due to some changes in the test style
that didn't actually cause a git merge conflict. This updates the tests
to the new style.
* Make AWS credential types more explicit
The AWS secret engine had a lot of confusing overloading with role
paramemters and how they mapped to each of the three credential types
supported. This now adds parameters to remove the overloading while
maintaining backwards compatibility.
With the change, it also becomes easier to add other feature requests.
Attaching multiple managed policies to IAM users and adding a policy
document to STS AssumedRole credentials is now also supported.
Fixes#4229Fixes#3751Fixes#2817
* Add missing write action to STS endpoint
* Allow unsetting policy_document with empty string
This allows unsetting the policy_document by passing in an empty string.
Previously, it would fail because the empty string isn't a valid JSON
document.
* Respond to some PR feedback
* Refactor and simplify role reading/upgrading
This gets rid of the duplicated role upgrade code between both role
reading and role writing by handling the upgrade all in the role
reading.
* Eliminate duplicated AWS secret test code
The testAccStepReadUser and testAccStepReadSTS were virtually identical,
so they are consolidated into a single method with the path passed in.
* Switch to use AWS ARN parser
* Start work on passing context to backends
* More work on passing context
* Unindent logical system
* Unindent token store
* Unindent passthrough
* Unindent cubbyhole
* Fix tests
* use requestContext in rollback and expiration managers
