Scheduled CVE rescan #7
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| name: Scheduled CVE rescan | |
| # Re-scan the latest successfully-built `main` image for newly-disclosed CVEs. | |
| # Phase 2.6 FR-004~FR-007. | |
| on: | |
| schedule: | |
| - cron: "0 6 * * MON" | |
| workflow_dispatch: | |
| permissions: | |
| contents: read | |
| packages: read | |
| issues: write # to auto-open an issue when a new CVE shows up | |
| actions: read # required for `gh run list` to find the latest image build | |
| jobs: | |
| scan: | |
| runs-on: ubuntu-latest | |
| env: | |
| GH_TOKEN: ${{ secrets.GITHUB_TOKEN }} | |
| REPO: ${{ github.repository }} | |
| steps: | |
| - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 | |
| - name: Resolve latest successful build SHA | |
| id: resolve | |
| run: | | |
| # FR-005: pick the latest *successful* image build run on main. | |
| SHA=$(gh run list --workflow=image.yml --branch=main --status=success \ | |
| --limit=1 --json headSha --jq '.[0].headSha[0:7]') | |
| if [ -z "$SHA" ]; then | |
| echo "::error::no successful image build found on main"; exit 1 | |
| fi | |
| IMAGE="ghcr.io/${REPO}:sha-${SHA}" | |
| echo "image=$IMAGE" >> "$GITHUB_OUTPUT" | |
| echo "sha=$SHA" >> "$GITHUB_OUTPUT" | |
| echo "Will scan: $IMAGE" | |
| - uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0 | |
| with: | |
| registry: ghcr.io | |
| username: ${{ github.actor }} | |
| password: ${{ secrets.GITHUB_TOKEN }} | |
| # Always emit a JSON report (regardless of severity) so we can introspect. | |
| # We DO NOT fail the job on CVEs — the gate is "open an issue per new CVE". | |
| - name: Trivy scan (json) | |
| uses: aquasecurity/trivy-action@ed142fd0673e97e23eac54620cfb913e5ce36c25 # v0.36.0 | |
| with: | |
| version: v0.70.0 # FR-002 | |
| image-ref: ${{ steps.resolve.outputs.image }} | |
| severity: HIGH,CRITICAL | |
| exit-code: '0' # do not fail the job | |
| ignore-unfixed: true | |
| trivyignores: .trivyignore | |
| format: json | |
| output: trivy-report.json | |
| - name: Open issues for new CVEs (deduped by CVE id) | |
| run: | | |
| set -euo pipefail | |
| IMAGE="${{ steps.resolve.outputs.image }}" | |
| # Extract all unique CVE ids found (HIGH/CRITICAL only). | |
| CVES=$(jq -r ' | |
| [.Results[]?.Vulnerabilities[]? | |
| | select(.Severity == "HIGH" or .Severity == "CRITICAL") | |
| | .VulnerabilityID | |
| ] | unique | .[] | |
| ' trivy-report.json 2>/dev/null || true) | |
| if [ -z "$CVES" ]; then | |
| echo "::notice::clean — no HIGH/CRITICAL CVEs found in $IMAGE" | |
| exit 0 | |
| fi | |
| echo "Found CVEs:" | |
| echo "$CVES" | |
| for CVE in $CVES; do | |
| # FR-007: dedup by CVE id in title | |
| EXISTING=$(gh issue list --state open --search "[$CVE] in:title" \ | |
| --json number --jq '.[0].number // empty' || true) | |
| if [ -n "$EXISTING" ]; then | |
| echo "skip: issue #$EXISTING already tracks $CVE" | |
| continue | |
| fi | |
| DATE=$(date -u +%Y-%m-%d) | |
| SUMMARY=$(jq -r --arg cve "$CVE" ' | |
| [.Results[]?.Vulnerabilities[]? | |
| | select(.VulnerabilityID == $cve)][0] | |
| | "**Package**: \(.PkgName) \(.InstalledVersion)\n" + | |
| "**Fixed in**: \(.FixedVersion // "—")\n" + | |
| "**Severity**: \(.Severity)\n" + | |
| "**Title**: \(.Title // .Description // "")" | |
| ' trivy-report.json) | |
| BODY=$(printf '%s\n' \ | |
| "Scheduled rescan of \`$IMAGE\` on $DATE detected:" \ | |
| "" \ | |
| "$SUMMARY" \ | |
| "" \ | |
| "Detected by: \`.github/workflows/scheduled-scan.yml\`" \ | |
| "Run: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}" \ | |
| "" \ | |
| "To suppress (if not exploitable), add to \`.trivyignore\` with a reason and link this issue.") | |
| gh issue create \ | |
| --title "[$CVE] new HIGH/CRITICAL in image ($DATE)" \ | |
| --label cve,security \ | |
| --body "$BODY" | |
| done | |
| - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1 | |
| if: always() | |
| with: | |
| name: trivy-report-${{ steps.resolve.outputs.sha }} | |
| path: trivy-report.json | |
| retention-days: 30 |