Ensure that unnecessary packages are not installed in the container

보통레벨 1수동 검토docker

설명

Containers should have as small a footprint as possible, and should not contain unnecessary software packages which could increase their attack surface. Unnecessary software should not be installed into containers, as doing so increases their attack surface. Only packages strictly necessary for the correct operation of the application being deployed should be installed. Reported as a manual review item: the audit needs a site-specific judgement.

점검 방법

감사 방식: 수동 검토

이 권장 사항은 자동으로 점검할 수 없습니다. --include-manual 옵션을 전달하면 스캔 결과에 이 지침과 함께 표시됩니다.

List all the running instances of containers by executing the command below: docker ps --quiet For each container instance, execute the relevant command for listing all installed packages, e.g.: docker exec $INSTANCE_ID rpm -qa The command above lists the packages installed. You should review the list and ensure that everything installed is actually required.

조치 방법

조치 방식: 가이드 또는 인프라 패치

You should not install anything within the container that is not required. You should consider using a minimal base image rather than the standard CentOS, Debian, or Red Hat images if you can. Some of the options available include BusyBox and Alpine. Not only can this trim your image size considerably, but there would also be fewer pieces of software which could contain vectors for attack.

속성

운영 체제: 모두
태그: dockermanual
참고 자료: CIS Docker Benchmark v1.9.0 - 4.3 Ensure that unnecessary packages are not installed in the container