This content originally appeared on DEV Community and was authored by Ederson Brilhante
Vilicus is an open-source tool that orchestrates security scans of container images(Docker/OCI) and centralizes all results into a database for further analysis and metrics.
Why scan for vulnerabilities?
A recent analysis of around 4 million Docker Hub images by cyber security firm Prevasio found that 51% of the images had exploitable vulnerabilities. A large number of these were cryptocurrency miners, both open and hidden, and 6,432 of the images had malware.
https://www.infoq.com/news/2020/12/dockerhub-image-vulnerabilities/
Image from https://prevasio.com/static/web/viewer.html?file=/static/Red_Kangaroo.pdf
Docker image security scanning is a process for finding security vulnerabilities within your Docker image files.
Typically, image scanning works by parsing through the packages or other dependencies that are defined in a container image file, then checking to see whether there are any known vulnerabilities in those packages or dependencies.
https://resources.whitesourcesoftware.com/blog-whitesource/docker-image-security-scanning
How does it work?
There are many tools to scan container images for vulnerabilities such as Anchore, Clair, and Trivy. But sometimes the results from the same image can be different. And this project comes to help the developers to improve the quality of their container images by finding vulnerabilities and thus addressing them with agnostic sight from vendors.
Some articles comparing the scanning tools:
Architecture
Cached Database
Vilicus updates daily the vendor databases with the latest changes in the vulns DBs.
Using a strategy to storage the database data in layers of docker images, the whole platform is ready to use in minutes instead of hours. Starting the sync feed with vulns from scratch can take at least 6 hours.
Check the strategy used in Anchore, Clair and Trivy
Local Registry
Vilicus provides a local registry, so you can build a local image and scanning it without pushing it to a remote repository.
docker build -t localhost:5000/local-image:my-tag .
curl -o docker-compose.yml https://raw.githubusercontent.com/edersonbrilhante/vilicus/main/deployments/docker-compose.yml
docker-compose up -d
IMAGE=localregistry.vilicus.svc:5000/local-image:my-tag
docker run -v ${PWD}/artifacts:/artifacts \
--network container:vilicus \
vilicus/vilicus:latest \
sh -c "dockerize -wait http://vilicus:8080/healthz -wait-retry-interval 60s -timeout 2000s vilicus-client -p /opt/vilicus/configs/conf.yaml -i ${IMAGE} -t /opt/vilicus/contrib/sarif.tpl -o /artifacts/results.sarif"
GitHub Action
GitHub Actions makes it easy to automate all your software workflows, now with world-class CI/CD. Build, test, and deploy your code right from GitHub. Make code reviews, branch management, and issue triaging work the way you want.
https://github.com/features/actions
Vilicus provides a GitHub action to help you scanning container images in your CI/CD.
Container scanning
A scan can be done using a remote image and a local image. Using a remote repository such as docker.io the image will be docker.io/your-organization/image:tag:
- name: Scan image
uses: edersonbrilhante/vilicus-github-action@main
with:
image: "docker.io/myorganization/myimage:tag"
And to use a local image its need to tag as localhost:5000/image:tag:
- name: Scan image
uses: edersonbrilhante/vilicus-github-action@main
with:
image: "localhost:5000/myimage:tag"
Full example
Complete example with steps for cleaning space, building local image, Vilicus scanning, and uploading results to GitHub Security
name: Container Image CI
on: [push]
jobs:
build
runs-on: ubuntu-latest
steps:
- name: Maximize Build Space
uses: easimon/maximize-build-space@master
with:
root-reserve-mb: 512
swap-size-mb: 1024
remove-dotnet: 'true'
remove-android: 'true'
remove-haskell: 'true'
- name: Checkout branch
uses: actions/checkout@v2
- name: Build the Container image
run: docker build -t localhost:5000/local-image:${GITHUB_SHA} .
- name: Vilicus Scan
uses: edersonbrilhante/vilicus-github-action@main
with:
image: localhost:5000/local-image:${{ github.sha }}
- name: Upload results to github security
uses: github/codeql-action/upload-sarif@v1
with:
sarif_file: artifacts/results.sarif
Results in GitHub Security
Check an example using Vilicus GitHub Action
Pipeline example
List with all vulns found
Vuln details
Source Code
That’s it!
In case you have any questions, please leave a comment here or ping me on ? LinkedIn.
This content originally appeared on DEV Community and was authored by Ederson Brilhante
Ederson Brilhante | Sciencx (2021-03-31T20:19:18+00:00) Vilicus — A overseer for security scanning of container images. Retrieved from https://www.scien.cx/2021/03/31/vilicus-a-overseer-for-security-scanning-of-container-images/
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