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Trivy

License Apache-2.0GitHub release (latest SemVer)OWASP Incubator ProjectArtifact HUBGitHub Repo starsTwitter Follower

What is Trivy?#

Trivy (tri pronounced like trigger, vy pronounced like envy) is a simple and comprehensive vulnerability scanner for containers and other artifacts. A software vulnerability is a glitch, flaw, or weakness present in the software or in an Operating System. Trivy detects vulnerabilities of OS packages (Alpine, RHEL, CentOS, etc.) and application dependencies (Bundler, Composer, npm, yarn, etc.). Trivy is easy to use. Just install the binary, and you're ready to scan. All you need to do for scanning is to specify a target such as an image name of the container.

To learn more about the Trivy scanner itself visit on Trivy's GitHub Repository.

Deployment#

The trivy chart can be deployed via helm:

# Install HelmChart (use -n to configure another namespace)helm upgrade --install trivy secureCodeBox/trivy

Scanner Configuration#

The following security scan configuration example are based on the [Trivy Documentation], please take a look at the original documentation for more configuration examples.

  • Filter the vulnerabilities by severities trivy image --severity HIGH,CRITICAL ruby:2.4.0
  • Filter the vulnerabilities by type (os or library) trivy image --vuln-type os ruby:2.4.0
  • Skip update of vulnerability DB: trivy image --skip-update python:3.4-alpine3.9
  • Ignore unfixed vulnerabilities:trivy image --ignore-unfixed ruby:2.4.0 By default, Trivy also detects unpatched/unfixed vulnerabilities. This means you can't fix these vulnerabilities even if you update all packages. If you would like to ignore them, use the --ignore-unfixed option.

Requirements#

Kubernetes: >=v1.11.0-0

Values#

KeyTypeDefaultDescription
cascadingRules.enabledboolfalseEnables or disables the installation of the default cascading rules for this scanner
parser.envlist[]Optional environment variables mapped into each parseJob (see: https://kubernetes.io/docs/tasks/inject-data-application/define-environment-variable-container/)
parser.image.pullPolicystring"IfNotPresent"Image pull policy. One of Always, Never, IfNotPresent. Defaults to Always if :latest tag is specified, or IfNotPresent otherwise. More info: https://kubernetes.io/docs/concepts/containers/images#updating-images
parser.image.repositorystring"docker.io/securecodebox/parser-trivy"Parser image repository
parser.image.tagstringdefaults to the charts versionParser image tag
parser.ttlSecondsAfterFinishedstringnilseconds after which the kubernetes job for the parser will be deleted. Requires the Kubernetes TTLAfterFinished controller: https://kubernetes.io/docs/concepts/workloads/controllers/ttlafterfinished/
scanner.activeDeadlineSecondsstringnilThere are situations where you want to fail a scan Job after some amount of time. To do so, set activeDeadlineSeconds to define an active deadline (in seconds) when considering a scan Job as failed. (see: https://kubernetes.io/docs/concepts/workloads/controllers/job/#job-termination-and-cleanup)
scanner.backoffLimitint3There are situations where you want to fail a scan Job after some amount of retries due to a logical error in configuration etc. To do so, set backoffLimit to specify the number of retries before considering a scan Job as failed. (see: https://kubernetes.io/docs/concepts/workloads/controllers/job/#pod-backoff-failure-policy)
scanner.envlist[]Optional environment variables mapped into each scanJob (see: https://kubernetes.io/docs/tasks/inject-data-application/define-environment-variable-container/)
scanner.extraContainerslist[]Optional additional Containers started with each scanJob (see: https://kubernetes.io/docs/concepts/workloads/pods/init-containers/)
scanner.extraVolumeMountslist[]Optional VolumeMounts mapped into each scanJob (see: https://kubernetes.io/docs/concepts/storage/volumes/)
scanner.extraVolumeslist[]Optional Volumes mapped into each scanJob (see: https://kubernetes.io/docs/concepts/storage/volumes/)
scanner.image.pullPolicystring"IfNotPresent"Image pull policy. One of Always, Never, IfNotPresent. Defaults to Always if :latest tag is specified, or IfNotPresent otherwise. More info: https://kubernetes.io/docs/concepts/containers/images#updating-images
scanner.image.repositorystring"docker.io/aquasec/trivy"Container Image to run the scan
scanner.image.tagstringnildefaults to the charts appVersion
scanner.nameAppendstringnilappend a string to the default scantype name.
scanner.resourcesobject{}CPU/memory resource requests/limits (see: https://kubernetes.io/docs/tasks/configure-pod-container/assign-memory-resource/, https://kubernetes.io/docs/tasks/configure-pod-container/assign-cpu-resource/)
scanner.securityContextobject{"allowPrivilegeEscalation":false,"capabilities":{"drop":["all"]},"privileged":false,"readOnlyRootFilesystem":false,"runAsNonRoot":false}Optional securityContext set on scanner container (see: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/)
scanner.securityContext.allowPrivilegeEscalationboolfalseEnsure that users privileges cannot be escalated
scanner.securityContext.capabilities.drop[0]string"all"This drops all linux privileges from the container.
scanner.securityContext.privilegedboolfalseEnsures that the scanner container is not run in privileged mode
scanner.securityContext.readOnlyRootFilesystemboolfalsePrevents write access to the containers file system
scanner.securityContext.runAsNonRootboolfalseEnforces that the scanner image is run as a non root user
scanner.ttlSecondsAfterFinishedstringnilseconds after which the kubernetes job for the scanner will be deleted. Requires the Kubernetes TTLAfterFinished controller: https://kubernetes.io/docs/concepts/workloads/controllers/ttlafterfinished/

License#

License

Code of secureCodeBox is licensed under the Apache License 2.0.

Examples#

juice-shop#

# SPDX-FileCopyrightText: 2021 iteratec GmbH## SPDX-License-Identifier: Apache-2.0
apiVersion: "execution.securecodebox.io/v1"kind: Scanmetadata:  name: "trivy-juiceshop"  labels:    organization: "OWASP"spec:  scanType: "trivy"  parameters:    - "bkimminich/juice-shop:v10.2.0"

mediawiki#

# SPDX-FileCopyrightText: 2021 iteratec GmbH## SPDX-License-Identifier: Apache-2.0
apiVersion: "execution.securecodebox.io/v1"kind: Scanmetadata:  name: "trivy-mediawiki"spec:  scanType: "trivy"  parameters:    - "mediawiki:stable"