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Simple Code Scanning Pipeline (SCSP)

Current Tools


  • bandit
  • cfnNag
  • checkov (for Terraform)
  • shellcheck (removed due to licensing issues)
  • gitleaks
  • trivy
  • tfsec
  • semgrep
  • cdknag (for CDK)
  • cdknag (for CFT)
  • jshint

Style-specific tools:

  • flake8
  • sqlfluff


  • rdk unit test runner


The pipeline can be deployed as a CloudFormation template in any account (Isengard as well as Customer account) using this link (just open the AWS Console and choose the region where you intend to deploy the stack):

Parameter descriptions should provide sufficient guidance to set up the pipeline. If they don't, raise an Issue in this repo!

After the pipeline is created, you can upload your code using git to be scanned.

Clone the repository using the HTTPS (GRC) link, not HTTPS. GRC allows you to access the repository using your local AWS credentials. HTTPS without GRC will prompt for username/password credentials that you should not provide. Alternatively, you can adapt this code snippet to configure and clone your repo:

# Set these to your preferred values
# Boilerplate
pip3 install git-remote-codecommit
aws sso login --profile security
git clone codecommit::${region}://${repo_name} # this codecommit prefixed URL is equivalent to copying the HTTPS (GRC) link from CodeCommit
cd ${repo_name}
git defender --setup # one-time task to set up Git Defender, required for all internal git usage

Adding code

Certain tools are too specific to run against the entire repo. Specific directories are required so that specific tools aren't run on general files. For example, we don't want a settings.json file to be scanned by cfn_nag. You will need to upload specific types of code to specific directories in order to get scan results:

  • Cloudformation templates (default directory: cfn_templates)
  • Terraform code (default directory: terraform_files)
  • RDK Config rules (default directory: config_rules)

The default values can be changed using CloudFormation parameters.

These are the typical commands used to push code from your local repository to the remote repository:

git add . # tells git to include all changed files in the commit (alternatively, instead of . you can specify file/directory names)
git commit -m "summary of the changes you're making"
git push # sends the commit to the remote repository

Known issues

  • “Project-level concurrent build limit cannot exceed the account-level concurrent build limit of 1”

    • Try re-running the pipeline using the Release Change button in the CodePipeline console. This is a known issue that seems to be most common during the first few executions of the pipeline.
  • S3 upload times out

    • This is likely due to a security tool failing to upload its results to S3. Submit an issue with details to this repository.
  • Other issues?

    • Submit an Issue!


The Simple Code Scanning Pipeline project creates a pipeline that AWS users can use to automatically scan a wide variety of code for security and syntax issues.

This project enables consultants to stand up a review of their deliverables without installing individual scanning tools.

This artifact sets up a ready-to-use development environment integrated with a CI pipeline with security and DevOps best practices. Upon successful deployment, you will have:

  • An AWS CodeCommit Git repository (by default called scsp-repo with default branch main) where you can add code to be scanned. You can also bring your own CodeCommit repo by specifying the repo ARN and branch.
  • A multi-stage CI pipeline integrated with the code repository
  • Pipeline integration for the following tools:
    • Bandit for finding common security issues in Python code
    • Flake8 for ensuring well-formatted Python code.
    • cfn_nag for CloudFormation template linting and security checks
    • Checkov for Terraform linting
    • Gitleaks for secret detection
    • Shellcheck for Shell script linting (removed due to licensing issues)
    • SqlFluff for SQL linting
    • Unit testing of RDK Custom Config rules


If there's an additional feature you would like to add, you can either create an Issue in this repository or create a fork.

If updating the CDK source code. The StandardizedCodeBuildProject class makes it straightforward to add actions. Just provide the name, description, and install/build commands and the class will create the CodeBuild Project using sensible default values.

Tool output standards

  • New Action classes should be added into the /lib/actions folder, and an object built from that class should be added to the scanActions list in the main Stack file (scsp-pipeline-stack.ts).

  • Build Actions should FAIL (exit non-zero) if there are problems detected by the scanning tool (or if the scanning tool fails to run). Build Actions should PASS (exit 0) if there are no problems detected by the scanning tool. StandardizedCodeBuildProject creates a variable

  • Test using both known-good and known-bad inputs -- some tools may return successful exit statuses despite finding issues! If you are developing a tool for a new language, add known-good and known-bad test files to the initial_repos folder.

  • Each tool must write one file (named <projectName>.log) with any actionable findings to the root directory where the Action is running. A log file should be created even if the scan is clean. This will allow the default post_build steps to upload that single file to S3. Tools must also write their actionable output to CodeBuild logs. This can be accomplished by piping tool output to | tee -a <projectName>.log or by using a tool's built-in options to save to a file (and then cat that file in the post-build steps so that it outputs to CodeBuild logs).

  • If a tool has automatic fix options, the Action should print information on how to automatically fix the codebase. If a tool has options to suppress false positives, those should also be listed (with an emphasis on clearly documenting the reason for the suppression)

Developer testing commands

Deploy with a set of known-good files

cdk deploy --context starting-files=good # --require-approval never

Deploy with a set of known-bad files

cdk deploy --context starting-files=bad # --require-approval never


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