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geointel/scripts/scan_container_image.sh
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Jens faeb58ef6d
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Initial public release
2026-08-31 21:56:53 +02:00

117 lines
3.7 KiB
Bash

#!/usr/bin/env bash
set -euo pipefail
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
TARGET_IMAGE="${1:-geointel-ci:local}"
OUTPUT="${2:-artifacts/geointel-container-vulnerabilities.json}"
IMAGE_ARCHIVE="${GEOINTEL_IMAGE_ARCHIVE:-artifacts/geointel-image.tar}"
ARCHIVE_ID_FILE="${IMAGE_ARCHIVE}.image-id"
KEEP_ARCHIVE="${GEOINTEL_KEEP_IMAGE_ARCHIVE:-false}"
TRIVY_IMAGE="aquasec/trivy:0.70.0@sha256:be1190afcb28352bfddc4ddeb71470835d16462af68d310f9f4bca710961a41e"
CACHE_DIR="${GEOINTEL_TRIVY_CACHE:-$ROOT/.cache/trivy}"
PYTHON_CMD="${PYTHON_BIN:-python3}"
IGNORE_FILE="$CACHE_DIR/geointel-trivy-ignore.txt"
ARCHIVE_CREATED=false
PARTIAL_ARCHIVE=""
cleanup() {
rm -f -- "$IGNORE_FILE"
if [ -n "$PARTIAL_ARCHIVE" ]; then
rm -f -- "$PARTIAL_ARCHIVE"
fi
if [ "$ARCHIVE_CREATED" = true ] && [ "$KEEP_ARCHIVE" != true ]; then
rm -f -- "$ROOT/$IMAGE_ARCHIVE" "$ROOT/$ARCHIVE_ID_FILE"
fi
}
trap cleanup EXIT
for candidate in "$OUTPUT" "$IMAGE_ARCHIVE"; do
case "$candidate" in
/*|*..*)
echo "Scan paths must be repository-relative and may not contain '..'." >&2
exit 1
;;
esac
done
IMAGE_ID="$(docker image inspect --format '{{.Id}}' "$TARGET_IMAGE")"
test -n "$IMAGE_ID"
case "$CACHE_DIR" in
"$ROOT"/*) CACHE_RELATIVE="${CACHE_DIR#"$ROOT/"}" ;;
*)
echo "Trivy cache must remain inside the repository workspace." >&2
exit 1
;;
esac
case "$CACHE_RELATIVE" in
*..*)
echo "Trivy cache may not contain '..'." >&2
exit 1
;;
esac
mkdir -p "$ROOT/$(dirname "$OUTPUT")" "$ROOT/$(dirname "$IMAGE_ARCHIVE")" "$CACHE_DIR"
ARCHIVE_ID=""
if [ -s "$ROOT/$ARCHIVE_ID_FILE" ]; then
ARCHIVE_ID="$(tr -d '[:space:]' < "$ROOT/$ARCHIVE_ID_FILE")"
fi
if [ ! -s "$ROOT/$IMAGE_ARCHIVE" ] || [ "$ARCHIVE_ID" != "$IMAGE_ID" ]; then
rm -f -- "$ROOT/$IMAGE_ARCHIVE" "$ROOT/$ARCHIVE_ID_FILE"
PARTIAL_ARCHIVE="$ROOT/${IMAGE_ARCHIVE}.partial.$$"
docker save "$IMAGE_ID" --output "$PARTIAL_ARCHIVE"
mv "$PARTIAL_ARCHIVE" "$ROOT/$IMAGE_ARCHIVE"
PARTIAL_ARCHIVE=""
printf '%s\n' "$IMAGE_ID" > "$ROOT/$ARCHIVE_ID_FILE"
ARCHIVE_CREATED=true
fi
WORKDIR="/workspace"
WORKSPACE_ARGS=(-v "$ROOT:/workspace")
if [[ -n "${HOSTNAME:-}" ]] && docker inspect --type container "$HOSTNAME" >/dev/null 2>&1; then
WORKDIR="$ROOT"
WORKSPACE_ARGS=(--volumes-from "$HOSTNAME")
fi
CONTAINER_CACHE_DIR="$WORKDIR/$CACHE_RELATIVE"
CONTAINER_IGNORE_FILE="$CONTAINER_CACHE_DIR/geointel-trivy-ignore.txt"
"$PYTHON_CMD" "$ROOT/scripts/verify_security_exceptions.py"
"$PYTHON_CMD" "$ROOT/scripts/verify_security_exceptions.py" \
--print-container-ids | tr -d '\r' > "$IGNORE_FILE"
# Keep the complete report, including vulnerabilities without an available fix.
docker run --rm \
--user 0:0 \
"${WORKSPACE_ARGS[@]}" \
"$TRIVY_IMAGE" \
image \
--input "$WORKDIR/$IMAGE_ARCHIVE" \
--scanners vuln \
--timeout 20m \
--skip-version-check \
--format json \
--cache-dir "$CONTAINER_CACHE_DIR" \
--output "$WORKDIR/$OUTPUT"
# Release policy: fixed HIGH/CRITICAL findings block the build. Unfixed findings
# remain visible in the full report and must be reviewed before release. The
# postgres base image's Go gosu binary remains discoverable in a lower layer,
# but the final filesystem replaces it with the audited setpriv shell wrapper.
docker run --rm \
--user 0:0 \
"${WORKSPACE_ARGS[@]}" \
"$TRIVY_IMAGE" \
image \
--input "$WORKDIR/$IMAGE_ARCHIVE" \
--scanners vuln \
--timeout 20m \
--skip-version-check \
--ignore-unfixed \
--cache-dir "$CONTAINER_CACHE_DIR" \
--ignorefile "$CONTAINER_IGNORE_FILE" \
--skip-files /usr/local/bin/gosu \
--severity HIGH,CRITICAL \
--exit-code 1
test -s "$ROOT/$OUTPUT"
echo "Container vulnerability report written to $OUTPUT for $IMAGE_ID"