mirror of
https://github.com/pewdiepie-archdaemon/odysseus.git
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81 lines
2.8 KiB
YAML
81 lines
2.8 KiB
YAML
# Workflow security (CI that audits the CI)
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#
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# Purpose: the GitHub Actions workflows themselves are an attack surface. A
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# poorly written workflow can leak the repository token, run attacker-supplied
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# code from a pull request, or pull in a tampered third-party action. These two
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# tools check every workflow file in this repo for those mistakes:
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#
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# - actionlint: catches workflow syntax errors and shell-script bugs inside
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# `run:` steps before they reach main.
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# - zizmor: a security linter for Actions. Flags template-injection holes,
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# unpinned actions, credential persistence, and over-broad token
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# permissions -- exactly the patterns the rest of this CI is built to avoid.
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#
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# Add this early: it then audits every workflow added after it.
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name: Workflow security
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on:
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pull_request:
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push:
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branches: [main]
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workflow_dispatch:
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# Default-deny token; each job grants only read access to the code.
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permissions: {}
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concurrency:
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group: workflow-security-${{ github.workflow }}-${{ github.ref }}
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cancel-in-progress: true
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jobs:
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actionlint:
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name: actionlint
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runs-on: ubuntu-latest
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permissions:
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contents: read
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steps:
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- name: Checkout repository
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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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# Pinned version + checksum so a tampered binary cannot run here.
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- name: Run actionlint (pinned, checksum-verified)
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env:
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ACTIONLINT_VERSION: 1.7.12
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ACTIONLINT_SHA256: 8aca8db96f1b94770f1b0d72b6dddcb1ebb8123cb3712530b08cc387b349a3d8
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run: |
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set -euo pipefail
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TARBALL="actionlint_${ACTIONLINT_VERSION}_linux_amd64.tar.gz"
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curl -fsSL -o "${TARBALL}" \
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"https://github.com/rhysd/actionlint/releases/download/v${ACTIONLINT_VERSION}/${TARBALL}"
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echo "${ACTIONLINT_SHA256} ${TARBALL}" | sha256sum -c -
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tar -xzf "${TARBALL}" actionlint
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./actionlint -color
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zizmor:
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name: zizmor (Actions SAST)
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runs-on: ubuntu-latest
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permissions:
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contents: read
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steps:
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- name: Checkout repository
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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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- name: Set up Python
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uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
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with:
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python-version: '3.12'
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# Pinned zizmor release. --offline keeps the audit hermetic (no network
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# calls about the actions it inspects); --min-severity=low surfaces
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# everything so nothing slips through under the gate.
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- name: Run zizmor
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run: |
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set -euo pipefail
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pip install zizmor==1.25.2
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zizmor --offline --min-severity=low .github/workflows/
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