Openid Connect In Action Pdf Download

This guide explains how to configure AWS to trust GitHub's OIDC as a federated identity, and includes a workflow example for the aws-actions/configure-aws-credentials that uses tokens to authenticate to AWS and access resources.

By default, the login action logs in with the Azure CLI and sets up the GitHub Actions runner environment for Azure CLI. You can use Azure PowerShell with enable-AzPSSession property of the Azure login action. This sets up the GitHub Actions runner environment with the Azure PowerShell module.

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You need to provide your application's Client ID, Tenant ID and Subscription ID to the login action. These values can either be provided directly in the workflow or can be stored in GitHub secrets and referenced in your workflow. Saving the values as GitHub secrets is the more secure option.

In this example, you'll use OpenID Connect Azure CLI to authenticate with Azure with the Azure login action. The example uses GitHub secrets for the client-id, tenant-id, and subscription-id values. You can also pass these values directly in the login action.

In this workflow, you authenticate using the Azure login action with the service principal details stored in secrets.AZURE_CREDENTIALS. Then, you run an Azure CLI action. For more information about referencing GitHub secrets in a workflow file, see Using encrypted secrets in a workflow in GitHub Docs.

To log in to one of the Azure Government clouds, set the optional parameter environment with supported cloud names AzureUSGovernment or AzureChinaCloud. If this parameter is not specified, it takes the default value AzureCloud and connects to the Azure Public Cloud.

To update your custom actions to authenticate using OIDC, you can use getIDToken() from the Actions toolkit to request a JWT from GitHub's OIDC provider. For more information, see "OIDC Token" in the npm package documentation.

When you use custom actions in your workflows, those actions may use the GitHub Actions Toolkit to enable you to supply a custom value for the audience claim. Some cloud providers also use this in their official login actions to enforce a default value for the audience claim. For example, the GitHub Action for Azure Login provides a default aud value of api://AzureADTokenExchange, or it allows you to set a custom aud value in your workflows. For more information on the GitHub Actions Toolkit, see the OIDC token section in the documentation.

If you do not want to use the default aud value offered by an action, you can provide a custom value for the audience claim. This allows you to set a condition that only workflows in a specific repository or organization can access the cloud role. If the action you are using supports this, you can use the with keyword in your workflow to pass a custom aud value to the action. For more information, see "Metadata syntax for GitHub Actions."

You can now update your YAML workflows to use OIDC access tokens instead of secrets. Popular cloud providers have published their official login actions that make it easy for you to get started with OIDC. For more information about updating your workflows, see the cloud-specific guides listed below in "Enabling OpenID Connect for your cloud provider."

The OctopusDeploy/login action provides a first-class way to use OIDC with Octopus in GitHub Actions, exchanging the GitHub ID token for an Octopus access token. Other Octopus actions (e.g. OctopusDeploy/create-release-action) within the same workflow job will be pre-configured to use this access token, including any use of the octopus cli in scripts.

It is recommended to use OIDC over API keys due to the benefits it provides, however the OctopusDeploy/login action also supports using an API key, for scenarios where using OIDC is not available. When using an API key the remainder of the workflow job will be configured to use the Server URL and API key automatically via environment variables, eliminating the need to supply these to any other Octopus actions or to the octopus cli.

Thanks for the great write up of this functionality. One thing I have discovered from my implementation is that when using an ECR policy (resource based policy) which permits the IAM Federated user (in this case github actions), other IAM restrictions do not apply, as outlined in the policy evaluation logic described here:

Prepare the policies for the role that the IdP-authenticated users will assume. As with any role, a role for a mobile app includes two policies. One is the trust policy that specifies who can assume the role. The other is the permissions policy that specifies the AWS actions and resources that the mobile app is allowed or denied access to.

If you want to create a role for GitHub Actions, you must start by adding the GitHub OIDC provider to IAM. After you've added the GitHub OIDC provider to IAM, choose token.actions.githubusercontent.com.

If you use GitHub as an OpenID Connect (OIDC) identity provider (IdP), best practice is to limit the entities that can assume the role associated with the IAM IdP. When you include a condition statement in the trust policy, you can limit the role to a specific GitHub organization, repository, or branch. You can use the condition key token.actions.githubusercontent.com:sub with string condition operators to limit access. We recommend that you limit the condition to a specific set of repositories or branches within your GitHub organization. For information about how to configure AWS to trust GitHub's OIDC as a federated identity, see GitHub Docs - Configuring OpenID Connect in Amazon Web Services. For information about limiting roles and customizing GitHub OIDC token claims, see GitHub Docs - About security hardening with OpenID Connect.

When GitHub's OIDC IdP is the trusted Principal for your role, IAM checks the role trust policy condition to verify that the condition key token.actions.githubusercontent.com:sub is present and that its value is not solely a wildcard character (* and ?) or null. IAM performs this check when the trust policy is created or updated. If the condition key token.actions.githubusercontent.com:sub is not present, or the key value doesn't satisfy the mentioned value criteria, the request will fail and return an error.

If you do not limit the condition key token.actions.githubusercontent.com:sub to a specific organization or repository, then GitHub Actions from organizations or repositories outside of your control are able to assume roles associated with the GitHub IAM IdP in your AWS account.

The following example trust policy limits access to the defined GitHub organization, repository, and branch. The condition key token.actions.githubusercontent.com:sub value in the following example is the default subject value format documented by GitHub.

The following example condition limits access to any repository or branch within the defined GitHub organization. We recommend that you limit the condition key token.actions.githubusercontent.com:sub to a specific value that limits access to GitHub Actions from within your GitHub organization.

You configure user authentication by creating an authenticate action for one or more listener rules. The authenticate-cognito and authenticate-oidc action types are supported only with HTTPS listeners. For descriptions of the corresponding fields, see AuthenticateCognitoActionConfig and AuthenticateOidcActionConfig in the Elastic Load Balancing API Reference version 2015-12-01.

For a load balancer supporting multiple applications that require independent client authentication, each listener rule with an authenticate action should have a unique cookie name. This ensures that clients are always authenticated with the IdP before being routed to the target group specified in the rule.

The following is an example of the actions.json file that specifies an authenticate-oidc action and a forward action. AuthenticationRequestExtraParams allows you to pass extra parameters to an IdP during authentication. Please follow documentation provided by your identity provider to determine the fields that are supported

User sends an HTTPS request to a website hosted behind an Application Load Balancer. When the conditions for a rule with an authenticate action are met, the load balancer checks for an authentication session cookie in the request headers.

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Any workflow in GitHub Actions can generate an OpenID Connect token that has a bunch of information about the workflow being run: the full repository name, the actor (aka user that initiated the action), the workflow type and name, etc.

If you are using an OIDC identity provider from Google, Facebook, or Amazon Cognito, you don't need to create a separate IAM identity provider. These OIDC identity providers are already built-in to AWS and are available for your use. Instead, you can move directly to creating new roles using your identity provider. To learn more, see Creating a role for web identity or OpenID connect federation in the IAM User Guide.

You must provide at least one thumbprint when creating an IAM OIDC provider. For example, assume that the OIDC provider is server.example.com and the provider stores its keys at -connect. In that case, the thumbprint string would be the hex-encoded SHA-1 hash value of the certificate used by

Recently, I had a request come up where I had to interact with AWS resources from GitHub Actions. In the past, I had done this using Azure Pipelines. I did that by: (a) storing the credentials (access_key and secret_key of the IAM user) as secure variables in the Azure DevOps Library variable group and (b) by allowing Azure Pipelines builder to access the secure variables in the variable group.

In the case of GitHub actions, I could use a similar approach: store the secrets securely (GitHub repo page -> Settings -> Security -> Secrets and variables -> Actions -> New repository secret) in the repository, which would enable the GitHub Actions builder to access to them. And although the credentials are stored as secrets, they can get accidentally exposed if someone gains access to the build runner machine. And to prevent long-lived access keys, one will have to create new security credentials (access and secret keys in Amazon Identity and Access Management (IAM)) and then update the same in GitHub Actions secrets regularly, which could become tedious. But there is a better option than that from a security and maintainability standpoint which I discuss here. ff782bc1db