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Fossa scanner reference for STO

You can ingest scan results from Fossa, a scanner that detects security vulnerabilities and other issues in open-source projects.

Important notes for running Fossa scans in STO​

Docker-in-Docker requirements​

The following use cases require a Docker-in-Docker background step in your pipeline:

  • Container image scans on Kubernetes and Docker build infrastructures
  • Security steps (not step palettes) on Kubernetes and Docker build infrastructures
    • Required for all target types and Orchestration/DataLoad modes

The following use cases do not require Docker-in-Docker:

Set up a Docker-in-Docker background step

  1. Go to the stage where you want to run the scan.

  2. In Overview, add the shared path /var/run.

  3. In Execution, do the following:

    1. Click Add Step and then choose Background.

    2. Configure the Background step as follows:

      1. Dependency Name = dind

      2. Container Registry = The Docker connector to download the DinD image. If you don't have one defined, go to Docker connector settings reference.

      3. Image = docker:dind

      4. Under Entry Point, add the following: dockerd

        In most cases, using dockerd is a faster and more secure way to set up the background step. For more information, go to the TLS section in the Docker quick reference.

      If the DinD service doesn't start with dockerd, clear the Entry Point field and then run the pipeline again. This starts the service with the default entry point.

      1. Under Optional Configuration, select the Privileged checkbox.
Configure the background step

Root access requirements​

You need to run the scan step with root access if either of the following apply:

note

You can set up your STO scan images and pipelines to run scans as non-root and establish trust for your own proxies using self-signed certificates. For more information, go to Configure STO to Download Images from a Private Registry.

For more information​

The following topics contain useful information for setting up scanner integrations in STO:

Fossa step settings for STO scans​

The recommended workflow is add a Fossa step to a Security Tests or CI Build stage and then configure it as described below.

Scan​

Scan Mode​

Scan Configuration​

The predefined configuration to use for the scan. All scan steps have at least one configuration.

Target​

Type​

The target type to scan for vulnerabilities.

  • Repository Scan a codebase repo.

    In most cases, you specify the codebase using a code repo connector that connects to the Git account or repository where your code is stored. For information, go to Configure codebase.

Name​

The identifier for the target, such as codebaseAlpha or jsmith/myalphaservice. Descriptive target names make it much easier to navigate your scan data in the STO UI.

It is good practice to specify a baseline for every target.

Variant​

The identifier for the specific variant to scan. This is usually the branch name, image tag, or product version. Harness maintains a historical trend for each variant.

Workspace (repository)​

The workspace path on the pod running the scan step. The workspace path is /harness by default.

You can override this if you want to scan only a subset of the workspace. For example, suppose the pipeline publishes artifacts to a subfolder /tmp/artifacts and you want to scan these artifacts only. In this case, you can specify the workspace path as /harness/tmp/artifacts.

Ingestion File​

The Fossa JSON results file to ingest.

Log Level, CLI flags, and Fail on Severity​

Log Level​

The minimum severity of the messages you want to include in your scan logs. You can specify one of the following:

  • DEBUG
  • INFO
  • WARNING
  • ERROR

Fail on Severity​

Every Security step has a Fail on Severity setting. If the scan finds any vulnerability with the specified severity level or higher, the pipeline fails automatically. You can specify one of the following:

  • CRITICAL
  • HIGH
  • MEDIUM
  • LOW
  • INFO
  • NONE — Do not fail on severity

The YAML definition looks like this: fail_on_severity : critical # | high | medium | low | info | none

Additional Configuration​

In the Additional Configuration settings, you can use the following options:

Advanced settings​

In the Advanced settings, you can use the following options:

YAML pipeline example​

This pipeline pulls a Fossa JSON data file from a GitHub repo and then ingests it.

pipeline:
  name: smp-fossa
  identifier: fossastp
  projectIdentifier: STO
  orgIdentifier: default
  tags: {}
  stages:
    - stage:
        name: fossa-test
        identifier: fossatest
        type: SecurityTests
        spec:
          cloneCodebase: false
          execution:
            steps:
              - step:
                  type: Run
                  name: Pull File
                  identifier: Pull_File
                  spec:
                    connectorRef: CONTAINER_IMAGE_REGISTRY_CONNECTOR
                    image: alpine/curl
                    shell: Sh
                    command: |-
                      curl https://github.com/myorg/fossa-scans/latest.json > /harness/latest.json
                      cat /harness/latest.json
              - step:
                  type: Fossa
                  name: Fossa_1
                  identifier: Fossa_1
                  spec:
                    imagePullPolicy: Always
                    mode: ingestion
                    config: default
                    target:
                      type: repository
                      name: test
                      variant: test
                    ingestion:
                      file: /harness/latest.json
          infrastructure:
            type: KubernetesDirect
            spec:
              connectorRef: K8S_DELEGATE_CONNECTOR
              namespace: harness-delegate-ng
              automountServiceAccountToken: true
              nodeSelector: {}
              os: Linux