supply-chain-security

name	supply-chain-security
description	SBOM generation, CVE scanning, supply chain attack detection, license compliance, dependency pinning, and artifact verification.

Supply Chain Security Principles

Guidelines for securing the software supply chain.

When to Invoke

• Auditing project dependencies
• Setting up CVE scanning in CI/CD
• License compliance review
• Responding to supply chain vulnerability disclosures

Dependency Security

CVE Scanning

Language	Tool	Command
Go	govulncheck	govulncheck ./...
Rust	cargo audit	cargo audit
Python	pip-audit	pip-audit
Node.js	npm audit	npm audit
Java	OWASP Dependency-Check	mvn dependency-check:check
.NET	Built-in	dotnet list package --vulnerable
Ruby	bundle audit	bundle audit check --update
PHP	composer audit	composer audit

Scanning Frequency

• Every CI run — fail build on critical/high CVEs
• Weekly scheduled scan — catch newly disclosed vulnerabilities
• On dependency update — verify new version is clean

SBOM (Software Bill of Materials)

Generation

# CycloneDX format (recommended)
# Go
cyclonedx-gomod mod -json -output sbom.json

# Node.js
npx @cyclonedx/cyclonedx-npm --output-file sbom.json

# Python
cyclonedx-py poetry --format json -o sbom.json

Usage

• Attach SBOM to releases
• Track all transitive dependencies
• Enable downstream vulnerability analysis

License Compliance

Risk Levels

License	Risk	Action
MIT, BSD, Apache 2.0	Low	Permissive — generally safe
LGPL	Medium	Review linking requirements
GPL	High	Copyleft — may require source disclosure
AGPL	Critical	Network copyleft — consult legal
No license	Critical	Cannot use — no rights granted

Automation

• Use license-checker (Node.js), pip-licenses (Python), cargo-license (Rust)
• Maintain allowlist/denylist of approved licenses
• Fail CI on disallowed licenses

Supply Chain Attack Prevention

1. Lock files committed — package-lock.json, go.sum, Cargo.lock, poetry.lock
2. Pin exact versions in production — no floating ranges
3. Verify checksums — lock files contain integrity hashes
4. Review new dependencies — check maintainer, downloads, last commit, open issues
5. Minimal dependencies — each dep = increased attack surface
6. Signed commits and releases — verify artifact provenance

Related

• Dependency Management Principles @.gemini/skills/dependency-management-principles/SKILL.md
• Security Principles GEMINI.md § Security Principles
• Security Mandate GEMINI.md § Security Mandate