ci: pin actions & limit token permissions #133
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- following the [`tj-actions` supply chain attack](https://www.stepsecurity.io/blog/harden-runner-detection-tj-actions-changed-files-action-is-compromised), figured I should harden some of my small repos too - follow [OpenSSF Scorecard best practices](https://github.com/ossf/scorecard/blob/43d5832d25ccc597a9b94926b6ad43da25204085/docs/checks.md) - specifically "Pinned Dependencies" and "Token Permissions" - In the future, may add [`falco-actions`](https://github.com/falcosecurity/falco-actions) etc for anomaly detection - see also https://sysdig.com/blog/detecting-and-mitigating-the-tj-actions-changed-files-supply-chain-attack-cve-2025-30066/ - based off OSS Falco, more powerful than and without restrictions unlike [`harden-runner`](https://github.com/step-security/harden-runner), although it doesn't have proactive egress blocking via an allowlist as `harden-runner` does 😕 - right now, adding those actions could arguably add _more_ surface area given the small usage of the current actions (could be a premature optimization rn) Co-authored-by: StepSecurity Bot <[email protected]>
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- following the [`tj-actions` supply chain attack](https://www.stepsecurity.io/blog/harden-runner-detection-tj-actions-changed-files-action-is-compromised), figured I should harden some of my small repos too - follow [OpenSSF Scorecard best practices](https://github.com/ossf/scorecard/blob/43d5832d25ccc597a9b94926b6ad43da25204085/docs/checks.md) - specifically "Pinned Dependencies" and "Token Permissions" - In the future, may add [`falco-actions`](https://github.com/falcosecurity/falco-actions) etc for anomaly detection - see also https://sysdig.com/blog/detecting-and-mitigating-the-tj-actions-changed-files-supply-chain-attack-cve-2025-30066/ - based off OSS Falco, more powerful than and without restrictions unlike [`harden-runner`](https://github.com/step-security/harden-runner), although it doesn't have proactive egress blocking via an allowlist as `harden-runner` does 😕 - right now, adding those actions could arguably add _more_ surface area given the small usage of the current actions (could be a premature optimization rn) Co-authored-by: StepSecurity Bot <[email protected]>
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Motivation
Following the
tj-actions/changed-filessupply chain attack (tj-actions/changed-files#2463), figured I should harden some of my small repos tooSummary
Details
permissions: contents: readto limit GHA token permission to least privilegeactions/checkout,actions/setup-node, andcodecov/codecov-actionto SHAsCredit
With some automated help from Step Security: step-security-bot@579bdc4
Prior Art
Similar to my prior work in ryanrudolfoba/SteamOS-Waydroid-Installer#224, argoproj/argo-workflows#12031, argoproj/argo-workflows#12035, argoproj/argo-workflows#12619, etc
Future Work
falco-actionsetc for anomaly detectionharden-runner, although it doesn't have proactive egress blocking via an allowlist asharden-runnerdoes 😕