Trivy Scan for Critical Vulnerabilities #204
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| name: Trivy Scan for Critical Vulnerabilities | |
| on: | |
| workflow_dispatch: | |
| inputs: | |
| registries: | |
| description: "List of image registries to scan" | |
| required: false | |
| default: | | |
| - us-docker.pkg.dev/runwhen-nonprod-shared/public-images/robot-runtime-base-image:latest | |
| schedule: | |
| - cron: "0 19 * * *" # Runs every day at 2 PM EST (7 PM UTC) | |
| pull_request: | |
| types: [opened, synchronize] # Triggers on PR open and when commits are pushed to the PR | |
| jobs: | |
| trivy-scan: | |
| runs-on: ubuntu-latest | |
| steps: | |
| - name: Checkout code | |
| uses: actions/checkout@v3 | |
| - name: Install Helm | |
| run: | | |
| curl https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3 | bash | |
| - name: Render Helm Chart to YAML | |
| id: render-helm | |
| run: | | |
| cd charts/runwhen-local | |
| # Parse the Chart.yaml file to extract repositories | |
| yq eval '.dependencies[] | .repository' Chart.yaml | while read -r repo; do | |
| name=$(echo $repo | sed 's|https://||' | sed 's|http://||' | awk -F'/' '{print $1}') | |
| echo "Adding Helm repository $name with URL $repo" | |
| helm repo add $name $repo || true | |
| done | |
| # Update the Helm repo index | |
| helm repo update | |
| # Build dependencies and render the Helm chart to YAML | |
| helm dependency build | |
| helm template . --set runner.enabled=true > ../../rendered_chart.yaml | |
| echo "Rendered Helm chart to YAML in ../../rendered_chart.yaml." | |
| - name: Verify Rendered YAML File | |
| run: | | |
| if [ -f "rendered_chart.yaml" ]; then | |
| echo "Rendered YAML file exists." | |
| else | |
| echo "Rendered YAML file does not exist!" | |
| exit 1 | |
| fi | |
| - name: Extract Images from Rendered YAML | |
| id: extract-images | |
| run: | | |
| # Extract image lines and remove leading/trailing quotes or unnecessary text | |
| grep -E "image:|\"image:" rendered_chart.yaml | sed -e 's/.*image: *//' -e 's/^"//' -e 's/"$//' > registries.txt | |
| sort -u registries.txt -o registries.txt | |
| echo "Images extracted from Helm chart:" | |
| cat registries.txt | |
| echo "Total images found: $(wc -l < registries.txt)" | |
| - name: Add Workflow Input Registries | |
| id: add-input-registries | |
| run: | | |
| # Add additional registries specified in workflow inputs | |
| echo "${{ github.event.inputs.registries }}" | sed 's/- /\n/g' | sed 's/^ *//;s/ *$//' >> registries.txt | |
| sort -u registries.txt -o registries.txt | |
| echo "Combined list of registries:" | |
| cat registries.txt | |
| echo "Total registries found: $(wc -l < registries.txt)" | |
| - name: Install latest Trivy | |
| run: | | |
| TRIVY_VERSION=$(curl -s https://api.github.com/repos/aquasecurity/trivy/releases/latest | jq -r .tag_name) | |
| STRIPPED_VERSION=${TRIVY_VERSION#v} | |
| wget https://github.com/aquasecurity/trivy/releases/download/${TRIVY_VERSION}/trivy_${STRIPPED_VERSION}_Linux-64bit.deb | |
| sudo dpkg -i trivy_${STRIPPED_VERSION}_Linux-64bit.deb | |
| - name: Verify registry entries and file reading | |
| run: | | |
| echo "Reading registries from registries.txt:" | |
| while IFS= read -r registry || [[ -n "$registry" ]]; do | |
| echo "Registry: '$registry'" | |
| done < registries.txt | |
| - name: Scan each registry and aggregate results | |
| id: trivy-scan | |
| run: | | |
| # Initialize an empty JSON array for aggregated results | |
| echo '{"Vulnerabilities": []}' > aggregated_results.json | |
| while IFS= read -r registry || [[ -n "$registry" ]]; do | |
| echo "Scanning registry: '$registry'..." | |
| if [[ -z "$registry" ]]; then | |
| echo "Error: Empty registry value detected. Skipping..." | |
| continue | |
| fi | |
| # Run Trivy scan and log output | |
| trivy image --severity CRITICAL --ignore-unfixed --scanners vuln --format json "$registry" > trivy_result.json | |
| echo "Trivy scan result for '$registry':" | |
| # Check if Trivy output was generated and contains vulnerabilities | |
| if [[ ! -s trivy_result.json ]]; then | |
| echo "Error: Trivy scan failed for '$registry'. Skipping..." | |
| continue | |
| fi | |
| # Safely handle null values in the Trivy output and log intermediate JSON | |
| jq --arg registry "$registry" '.Results[]?.Vulnerabilities? // [] | .[] |= . + {"Registry": $registry}' trivy_result.json > vulnerabilities.json | |
| echo "Processed vulnerabilities for '$registry':" | |
| cat vulnerabilities.json | |
| # Merge the current results with the aggregated results, ensuring a flat array | |
| jq '.Vulnerabilities += input' aggregated_results.json vulnerabilities.json > temp.json | |
| mv temp.json aggregated_results.json | |
| # Log the aggregated results so far | |
| echo "Aggregated results after processing '$registry':" | |
| done < registries.txt | |
| - name: Calculate aggregated metric | |
| id: calculate-metrics | |
| run: | | |
| echo "Calculating total Critical vulnerabilities..." | |
| critical_count=$(jq '.Vulnerabilities | map(select(.Severity == "CRITICAL")) | length' aggregated_results.json) | |
| echo "Total Critical vulnerabilities: $critical_count" | |
| echo "critical_count=$critical_count" >> $GITHUB_ENV | |
| - name: Upload aggregated results | |
| uses: actions/upload-artifact@v3 | |
| with: | |
| name: trivy_aggregated_results | |
| path: aggregated_results.json | |
| - name: Display total critical vulnerabilities | |
| run: | | |
| echo "Total Critical vulnerabilities: ${{ env.critical_count }}" | |
| - name: Generate summary report in table format | |
| id: generate-summary | |
| run: | | |
| # Generate a summary report in table format | |
| jq -r 'def group_vulns: | |
| reduce .Vulnerabilities[] as $v ({}; | |
| .[$v.VulnerabilityID + "@" + $v.InstalledVersion + "@" + $v.FixedVersion] += [{ | |
| "Registry": $v.Registry, | |
| "VulnerabilityID": $v.VulnerabilityID, | |
| "InstalledVersion": $v.InstalledVersion, | |
| "FixedVersion": $v.FixedVersion, | |
| "Severity": $v.Severity | |
| }] | |
| ); | |
| group_vulns | | |
| to_entries | map(.value) | flatten | | |
| unique_by(.VulnerabilityID, .InstalledVersion, .FixedVersion) | | |
| sort_by(.Registry) | | |
| (["Registry", "Vulnerability ID", "Installed Version", "Fixed Version", "Severity"] | (., map(length*"-"))), | |
| (.[] | [.Registry, .VulnerabilityID, .InstalledVersion, .FixedVersion, .Severity]) | | |
| @tsv' aggregated_results.json | column -t -s $'\t' |