It misses impact severity and security background as in other tools in our selection. Run docker run to run the tests in a docker container. Manual testing involves spot-checking infrastructure for functionality and has a high cost in time and effort. Often working simultaneously to improve the standards that, in turn, lead to increased quality. We didn't focus on additional testing of Kubernetes, Ansible or other IaC platforms. To ensure sufficient test coverage, write unit, contract, and integration tests for modules. To solve this problem, write two unit tests with HashiCorp Sentinel to check parameters in the configurations plan and automate the IP address verification. As a result, I usually write additional unit tests to parse the plan representation instead of the Terraform configuration. For example, use a custom validation rule to ensure that an AWS load balancers listener rule receives a valid integer range for its priority. Run terraform plan to create an execution plan. To check that the monitoring tool has system metrics, you can check if it contains data from your system in the last five minutes. The top half of the pyramid includes tests that require active infrastructure resources to run properly. Configure Terraform: If you haven't already done so, configure Terraform using one of the following options: Terraform-compliance tool: Install the Terraform compliance tool by running the following command: pip install terraform-compliance. If you use feature branching, merge your changes and apply them to a production environment. A module delivery pipeline starts with a terraform plan and then runs unit tests (and if applicable, contract tests) to verify the expected Terraform resources and configurations. Huge comparison of cloud providers for the gaming industry. This was done by installing the tools, experimenting with them, checking their websites, code repositories, documentation, command line help, outputs, etc. Ensure all data stored in the RDS is not publicly accessible, Ensure no hardcoded AWS access key and secret key exists in EC2 user data, Ensure no security groups allow ingress from 0.0.0.0:0 to port 22, Ensure no hardcoded AWS access key and secret key exists in lambda environment, S3 Bucket has an ACL defined, which allows public READ access. Fast-track to success with flexible on-demand cloud services. Ability to scan Terraform code defining AWS and GCP resources for security issues. Terraform providers include acceptance tests that resources properly create, update, and delete with the right configuration values. One test checks that the target group does not use the default node address, and the other verifies that the target_id matches a valid IP address. A resource group is created with a name following the pattern. Youll learn how infrastructure tests fit into your organizations development practices, the differences in testing modules versus configuration, and approaches to manage the cost of testing. Run terraform plan again to create a new execution plan. In production, run end-to-end tests against the system to confirm system availability. Coordinating infrastructure as code configuration best-practices across multiple engineering teams is difficult, not to mention that not every development squad has the right DevOps security skills. As a result, it provides confidence in the modules successful usage but not necessarily in applying module updates to live infrastructure environments. Another common example is creating virtual machines from a defined subset of images. In the same vein as RhinoLabs fantastic penetration testing training tool, CloudGoat, TerraGoat is a complementing resource for Terraform, the popular infrastructure-as-code framework from HashiCorp.
Run docker run again to test the configuration. For a full example of testing a module in Terraform Cloud, refer to a module built for Consul Terraform Sync. Your Terraform testing strategy does not need to be a perfect test pyramid. Sign up below to stay up to date with new projects and Bridgecrew announcements. Contract tests quickly catch misconfigurations to modules before applying them to live infrastructure resources. Are you puzzled from the wide range of choices of static analysis tools for Terraform? Of course, this is just an example which may or not be applicable The test will fail because - while the first rule requiring existence of tags succeeds - the second rule fails in that the. These can be considered more like warnings or good practice reminders than real security issues, but to be fair all the tools had such findings. Whether youve updated some HashiCorp Terraform configuration or a new version of a module, you want to catch errors quickly before you apply any changes to production infrastructure. Monitor feature of the Snyk agent is good for SCA but does not work on Terraform code well. Introducing TerraGoat, a vulnerable-by-design Terraform training project, Tutorial: Find, fix, and prevent Terraform misconfigurations with Bridgecrew, Tutorial: Scanning AWS CDK-generated templates at build-time with Bridgecrew, Announcing Checkov: Prevent cloud misconfigurations during build-time. Should you verify every parameter that Terraform configures on a resource? One more, a rather peculiar thing is that terrascan rule descriptions for GCP are pretty much identical to the ones used by Checkov. The report references the exact line, resource and attribute in Terraform, which we consider as perfect for speeding up the code review.
Many times, compliance testing is part of the continuous integration process and is used to ensure that user-defined policies are followed. If you need Software composition analysis, Kubernetes configuration scans etc., then it is a very good choice. With Lambda AWS container image support it starts to be very interesting for native DevSecOps serverless scanning. They should answer the question, Does my configuration or plan contain the correct metadata? Traditionally, unit tests should run independently, without external resources or API calls. Lower-level tests communicate system knowledge and expectations to teams that need to maintain and update Terraform configuration. These types of tests overlap with security testing done as part of policy as code because you check attributes in Terraform configuration for the correct values. Please do not create an GitHub issue for security concerns. terraform-compliance is a lightweight, security and compliance focused test framework against terraform to enable negative testing capability for your infrastructure-as-code. We apply best practices and focus on security to make sure we can maintain the trust of the community. Before we set out to choose the Terraform security scanning tool that will best suit our needs, we checked other posts concerning themselves with this topic. Another interesting thing to notice, is that all four tools were performing relatively similarly on the AWS files, and there were lots of issues that were found by three (7) or even all four tools (6), while in the GCP files there were only 4 issues on which three tools agreed and there was no issue which would be discover by all four tools. proving a component of code is performing properly. With Checkov you can scan the growing list of vulnerable resources that Terraform provisions into an AWS account. This section shows how to translate that example into a BDD Feature and Scenario. Ability to add and develop your own security rules, 8. Let's say one person works on a change and applies resources such as creating a VM in a test environment. Note: Consul Terraform Sync generates the services object outlined in the example. Using HTML report generator for snyk in code directory example: The harder part of this task was to fairly compare the selected tools based on the quality of the security findings. terraform-compliance mainly focuses on negative testing instead Integration tests can check that changes successfully run in a long-lived development environment, and end-to-end tests verify the environments initial functionality. The difference between development and production will affect the outcome of your tests, so be aware of which tests may be more important to flagging errors or disruptive to run. After running integration tests, destroy the resources and release a new module version. This also fixes the pro, Simplify support for running module directly (. Development Principles. Even if configuration tests have less accuracy in development, they can still catch a number of errors and help you practice applying and rolling back changes before production. If you are running dockerized pipeline you can run tfsec in docker, and not only tfsec.
In addition to the testing tools and approaches in this post, you can find other perspectives and examples in the references at the conclusion. Add them to the community forum! Getting started. If possible, avoid creating entire systems. If youre not familiar, Checkov is the open-source static analysis tool for infrastructure as code that we released earlier this year.
The tests cannot accurately represent the end state of brownfield (existing) resources because they do not test updates. You see the dashboard with errors by policy or failures by benchmark. I have also used both frameworks to provision virtual machines on AWS VPC networks and verify their connectivity as end-to-end tests for network configuration. Then the tedious manual work started - based on the location and issue description matching the issue findings from one tool to the others. We testedcheckov,snyk,terrascanandtfsec. What is needed here is oversight to ensure conformity to stated rules. You see a message indicating that the Terraform configuration is valid. Sentinel for Enterprise Products. Infrastructure as code (sometimes referred to as infrastructure code or abbreviated as IaC) is used, As companies look inward to discover where they can shore up cloud security shortcomings, the, Today we are introducing Checkov, a new open-source project for cloud infrastructure security. We found most of them either subjective, incomplete, not answering our questions or not meeting the needs we currently have. Claim a $50 credit for HCP Vault or HCP Consul, HashiCorp shares have begun trading on the Nasdaq, Discover our latest Webinars and Workshops. We hope that TerraGoat helps bridge the knowledge gap for those looking for ways to start down that path. terraform also provides the Although it may seem biased to use the testing repository of one of the compared tools as the dataset, we still went with it because it just meant that findings of checkov in terragoat will be the baseline and other tools can perform either better, the same or worse. To check that youve upgraded Nomad properly, you can deploy a sample application, test the endpoint, and delete it from the cluster. Updated the dict_merge and required functions that is dependening on it. The first policy could be written as a BDD feature scenario as follows: The following code shows a test for a specific tag: In this section, you download and test the example. Compliance testing is also known as conformance testing. Fortunately, Terraform is an abstraction layer for any API that creates, updates, or destroys cloud-infrastructure entities. Ill start at the bottom of the pyramid with unit tests and work my way up the pyramid to end-to-end tests. Huge comparison of cloud providers for the gaming industry. 2022 Bridgecrew inc. All Rights Reserved. Use Checkov pre-commit hooks or linters to identify errors before getting pushed into run-time, identify common missing arguments, and explore security layering concepts like security groups and IAM hardening. For larger, more complex configurations with many resources, you should not manually check individual parameters. PART 2: AWS, AZURE or GCP? After that we picked very simple metric - number of unique findings per tool: Its interesting to see in these results that Snyk performed exceptionally well on the AWS Terraform code, because it found more issues than checkov. Fortunately, terraform is a marvellous abstraction layer for any API Terrascan is also available as GitHub action. Since they run independently of infrastructure resources, unit tests have a virtually zero cost to run frequently. More about this topic, maybe, in one of our next posts. You can use a known host file to define the connectivity to GitLab or GitHub via ssh. For example, you might define geopolitical naming conventions for your Azure resources. The higher up the pyramid you go, the fewer tests you should have for that level of the pyramid. For additional test coverage, you can use any programming language or testing tool to parse the Terraform configuration in HCL or JSON and check for statically defined parameters, such as provider attributes with defaults or hard-coded values.
Instead of using a separate testing framework for contract tests, use a custom validation rule. For example, your Terraform configuration parses the IP address from an AWS instances DNS name and passes it to a target group for a load balancer. Some frameworks, such as Terratest or kitchen-terraform, orchestrate this sequence for you.
Run docker run again to test the configuration. For a full example of testing a module in Terraform Cloud, refer to a module built for Consul Terraform Sync. Your Terraform testing strategy does not need to be a perfect test pyramid. Sign up below to stay up to date with new projects and Bridgecrew announcements. Contract tests quickly catch misconfigurations to modules before applying them to live infrastructure resources. Are you puzzled from the wide range of choices of static analysis tools for Terraform? Of course, this is just an example which may or not be applicable The test will fail because - while the first rule requiring existence of tags succeeds - the second rule fails in that the. These can be considered more like warnings or good practice reminders than real security issues, but to be fair all the tools had such findings. Whether youve updated some HashiCorp Terraform configuration or a new version of a module, you want to catch errors quickly before you apply any changes to production infrastructure. Monitor feature of the Snyk agent is good for SCA but does not work on Terraform code well. Introducing TerraGoat, a vulnerable-by-design Terraform training project, Tutorial: Find, fix, and prevent Terraform misconfigurations with Bridgecrew, Tutorial: Scanning AWS CDK-generated templates at build-time with Bridgecrew, Announcing Checkov: Prevent cloud misconfigurations during build-time. Should you verify every parameter that Terraform configures on a resource? One more, a rather peculiar thing is that terrascan rule descriptions for GCP are pretty much identical to the ones used by Checkov. The report references the exact line, resource and attribute in Terraform, which we consider as perfect for speeding up the code review.
Many times, compliance testing is part of the continuous integration process and is used to ensure that user-defined policies are followed. If you need Software composition analysis, Kubernetes configuration scans etc., then it is a very good choice. With Lambda AWS container image support it starts to be very interesting for native DevSecOps serverless scanning. They should answer the question, Does my configuration or plan contain the correct metadata? Traditionally, unit tests should run independently, without external resources or API calls. Lower-level tests communicate system knowledge and expectations to teams that need to maintain and update Terraform configuration. These types of tests overlap with security testing done as part of policy as code because you check attributes in Terraform configuration for the correct values. Please do not create an GitHub issue for security concerns. terraform-compliance is a lightweight, security and compliance focused test framework against terraform to enable negative testing capability for your infrastructure-as-code. We apply best practices and focus on security to make sure we can maintain the trust of the community. Before we set out to choose the Terraform security scanning tool that will best suit our needs, we checked other posts concerning themselves with this topic. Another interesting thing to notice, is that all four tools were performing relatively similarly on the AWS files, and there were lots of issues that were found by three (7) or even all four tools (6), while in the GCP files there were only 4 issues on which three tools agreed and there was no issue which would be discover by all four tools. proving a component of code is performing properly. With Checkov you can scan the growing list of vulnerable resources that Terraform provisions into an AWS account. This section shows how to translate that example into a BDD Feature and Scenario. Ability to add and develop your own security rules, 8. Let's say one person works on a change and applies resources such as creating a VM in a test environment. Note: Consul Terraform Sync generates the services object outlined in the example. Using HTML report generator for snyk in code directory example: The harder part of this task was to fairly compare the selected tools based on the quality of the security findings. terraform-compliance mainly focuses on negative testing instead Integration tests can check that changes successfully run in a long-lived development environment, and end-to-end tests verify the environments initial functionality. The difference between development and production will affect the outcome of your tests, so be aware of which tests may be more important to flagging errors or disruptive to run. After running integration tests, destroy the resources and release a new module version. This also fixes the pro, Simplify support for running module directly (. Development Principles. Even if configuration tests have less accuracy in development, they can still catch a number of errors and help you practice applying and rolling back changes before production. If you are running dockerized pipeline you can run tfsec in docker, and not only tfsec.
In addition to the testing tools and approaches in this post, you can find other perspectives and examples in the references at the conclusion. Add them to the community forum! Getting started. If possible, avoid creating entire systems. If youre not familiar, Checkov is the open-source static analysis tool for infrastructure as code that we released earlier this year.
The tests cannot accurately represent the end state of brownfield (existing) resources because they do not test updates. You see the dashboard with errors by policy or failures by benchmark. I have also used both frameworks to provision virtual machines on AWS VPC networks and verify their connectivity as end-to-end tests for network configuration. Then the tedious manual work started - based on the location and issue description matching the issue findings from one tool to the others. We testedcheckov,snyk,terrascanandtfsec. What is needed here is oversight to ensure conformity to stated rules. You see a message indicating that the Terraform configuration is valid. Sentinel for Enterprise Products. Infrastructure as code (sometimes referred to as infrastructure code or abbreviated as IaC) is used, As companies look inward to discover where they can shore up cloud security shortcomings, the, Today we are introducing Checkov, a new open-source project for cloud infrastructure security. We found most of them either subjective, incomplete, not answering our questions or not meeting the needs we currently have. Claim a $50 credit for HCP Vault or HCP Consul, HashiCorp shares have begun trading on the Nasdaq, Discover our latest Webinars and Workshops. We hope that TerraGoat helps bridge the knowledge gap for those looking for ways to start down that path. terraform also provides the Although it may seem biased to use the testing repository of one of the compared tools as the dataset, we still went with it because it just meant that findings of checkov in terragoat will be the baseline and other tools can perform either better, the same or worse. To check that youve upgraded Nomad properly, you can deploy a sample application, test the endpoint, and delete it from the cluster. Updated the dict_merge and required functions that is dependening on it. The first policy could be written as a BDD feature scenario as follows: The following code shows a test for a specific tag: In this section, you download and test the example. Compliance testing is also known as conformance testing. Fortunately, Terraform is an abstraction layer for any API that creates, updates, or destroys cloud-infrastructure entities. Ill start at the bottom of the pyramid with unit tests and work my way up the pyramid to end-to-end tests. Huge comparison of cloud providers for the gaming industry. 2022 Bridgecrew inc. All Rights Reserved. Use Checkov pre-commit hooks or linters to identify errors before getting pushed into run-time, identify common missing arguments, and explore security layering concepts like security groups and IAM hardening. For larger, more complex configurations with many resources, you should not manually check individual parameters. PART 2: AWS, AZURE or GCP? After that we picked very simple metric - number of unique findings per tool: Its interesting to see in these results that Snyk performed exceptionally well on the AWS Terraform code, because it found more issues than checkov. Fortunately, terraform is a marvellous abstraction layer for any API Terrascan is also available as GitHub action. Since they run independently of infrastructure resources, unit tests have a virtually zero cost to run frequently. More about this topic, maybe, in one of our next posts. You can use a known host file to define the connectivity to GitLab or GitHub via ssh. For example, you might define geopolitical naming conventions for your Azure resources. The higher up the pyramid you go, the fewer tests you should have for that level of the pyramid. For additional test coverage, you can use any programming language or testing tool to parse the Terraform configuration in HCL or JSON and check for statically defined parameters, such as provider attributes with defaults or hard-coded values.
Instead of using a separate testing framework for contract tests, use a custom validation rule. For example, your Terraform configuration parses the IP address from an AWS instances DNS name and passes it to a target group for a load balancer. Some frameworks, such as Terratest or kitchen-terraform, orchestrate this sequence for you.