setup-java/.github/workflows/zizmor.yml
Bruno Borges 5a9d84a2f1 Harden workflows with least-privilege permissions and zizmor
Apply GitHub Actions security best practices to the action's own
workflows and integrate zizmor to catch regressions.

- Add explicit least-privilege `permissions:` to every workflow
  (contents: read for read-only workflows; default-deny `{}` with
  job-scoped grants for codeql, publish-immutable-actions and
  update-config-files).
- Set `persist-credentials: false` on all checkout steps that don't
  need the GITHUB_TOKEN afterwards.
- Move `${{ ... }}` expansions out of `run:` blocks into `env:` vars
  to avoid template injection.
- Pin the alpine container image (alpine:latest -> alpine:3.21).
- Add a zizmor CI workflow that uploads SARIF to code scanning, plus a
  `.github/zizmor.yml` pinning policy (ref-pin for actions/* and
  github/*, hash-pin for third-party actions).

zizmor now reports no findings (offline and online).

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-06-22 14:57:44 -04:00

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1.0 KiB
YAML

name: Security analysis with zizmor
on:
push:
branches:
- main
- releases/*
paths-ignore:
- '**.md'
pull_request:
paths-ignore:
- '**.md'
workflow_dispatch:
permissions: {}
jobs:
zizmor:
name: Analyze workflows with zizmor
runs-on: ubuntu-latest
permissions:
contents: read
security-events: write # to upload SARIF results to code scanning
steps:
- name: Checkout repository
uses: actions/checkout@v6
with:
persist-credentials: false
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: '3.x'
- name: Install zizmor
run: pip install zizmor
- name: Run zizmor
run: zizmor --format sarif .github/workflows/ > zizmor.sarif
env:
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
- name: Upload SARIF results to code scanning
if: always()
uses: github/codeql-action/upload-sarif@v3
with:
sarif_file: zizmor.sarif
category: zizmor