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glsec SARIF in GitHub code scanning, example
Signed-off-by: Nicolai Ehrhardt <245527909+predictor2718@users.noreply.github.com>
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‎.github/workflows/glsec.yml‎

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name: glsec
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# Scans bad-pipeline.yml with glsec and uploads the SARIF report to GitHub
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# code scanning, which shows the findings as alerts and as annotations on the
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# lines a pull request changes.
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on:
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push:
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branches: [main]
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pull_request:
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workflow_dispatch:
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permissions: {}
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env:
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GLSEC_VERSION: "1.24.0"
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jobs:
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scan:
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name: Scan
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runs-on: ubuntu-latest
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permissions:
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contents: read
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security-events: write # upload the SARIF report
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steps:
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- uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
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with:
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persist-credentials: false
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# The archive is checked against checksums.txt and against the
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# provenance of glsec's release workflow before it runs.
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- name: Install glsec
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env:
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GH_TOKEN: ${{ github.token }}
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run: |
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set -euo pipefail
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archive="glsec_${GLSEC_VERSION}_linux_amd64.tar.gz"
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base="https://github.com/glsec/glsec/releases/download/v${GLSEC_VERSION}"
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curl -sSfLO "$base/$archive"
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curl -sSfLO "$base/checksums.txt"
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grep " $archive\$" checksums.txt | sha256sum -c -
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gh attestation verify "$archive" --repo glsec/glsec \
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--signer-workflow glsec/glsec/.github/workflows/build-release.yml
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tar xzf "$archive" glsec
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# glsec exits 1 when it finds something; only 2 (a parse error) fails
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# the job, so the report is uploaded either way.
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- name: Scan
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run: |
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rc=0
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./glsec --format sarif bad-pipeline.yml > glsec.sarif || rc=$?
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[ "$rc" -le 1 ]
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- uses: github/codeql-action/upload-sarif@e58424170fb0262c8d7ed60a2e84b9bffe205c67 # codeql-bundle-v2.26.1
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with:
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sarif_file: glsec.sarif
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category: glsec

‎LICENSE‎

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‎README.md‎

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# glsec example: GitHub code scanning
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[![CI/CD security: glsec](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/glsec/glsec/main/assets/badge/v1.json)](https://github.com/glsec/glsec)
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[glsec](https://github.com/glsec/glsec) scans GitLab CI/CD pipelines. Its SARIF output (`--format sarif`) works with GitHub code scanning, for a GitLab pipeline file that lives in a GitHub repository, or a mirror of a GitLab project. Each finding becomes a code scanning alert, and on a pull request it shows up as an annotation on the changed line. Each rule links to its page on [glsec.github.io](https://glsec.github.io/rules/).
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The demo pull request [#1](../../pull/1) changes `bad-pipeline.yml` from a clean pipeline into one with the kind of mistakes glsec reports. It stays open on purpose.
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## The workflow
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[`.github/workflows/glsec.yml`](.github/workflows/glsec.yml):
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1. downloads the glsec release and checks it against `checksums.txt` and against the provenance of glsec's release workflow (`gh attestation verify`)
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2. runs `glsec --format sarif bad-pipeline.yml > glsec.sarif`. glsec exits 1 when it finds something, so only exit code 2 (a file it can't parse) fails the job
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3. uploads `glsec.sarif` with `github/codeql-action/upload-sarif`, with `security-events: write` and nothing else
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For your own repository, change the file name in the scan step, or pass several files or a glob.
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## See also
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- [Example reports](https://glsec.github.io/reports/): what every output format looks like for the same file
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- GitLab examples: [Catalog component](https://gitlab.com/glsec-io/examples/component), [Code Quality](https://gitlab.com/glsec-io/examples/component-code-quality), [Docker image](https://gitlab.com/glsec-io/examples/docker), [binary](https://gitlab.com/glsec-io/examples/binary)

‎bad-pipeline.yml‎

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# The same service before the changes in the demo pull request: no findings.
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workflow:
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rules:
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- if: $CI_PIPELINE_SOURCE == "merge_request_event"
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- if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
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test:
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image: node:22.11.0
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script:
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- npm ci
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- npm test

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