mirror of
https://github.com/docker/docker-bench-security.git
synced 2024-11-01 00:21:45 +01:00
60 lines
2.4 KiB
Bash
60 lines
2.4 KiB
Bash
#!/bin/bash
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check_6() {
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logit ""
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local id="6"
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local desc="Docker Security Operations"
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checkHeader="$id - $desc"
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info "$checkHeader"
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startsectionjson "$id" "$desc"
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}
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check_6_1() {
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local id="6.1"
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local desc="Ensure that image sprawl is avoided (Manual)"
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local remediation="You should keep only the images that you actually need and establish a workflow to remove old or stale images from the host. Additionally, you should use features such as pull-by-digest to get specific images from the registry."
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local remediationImpact="docker system prune -a removes all exited containers as well as all images and volumes that are not referenced by running containers, including for UCP and DTR."
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local check="$id - $desc"
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starttestjson "$id" "$desc"
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images=$(docker images -q | sort -u | wc -l | awk '{print $1}')
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active_images=0
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for c in $(docker inspect --format "{{.Image}}" $(docker ps -qa) 2>/dev/null); do
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if docker images --no-trunc -a | grep "$c" > /dev/null ; then
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active_images=$(( active_images += 1 ))
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fi
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done
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info -c "$check"
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info " * There are currently: $images images"
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if [ "$active_images" -lt "$((images / 2))" ]; then
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info " * Only $active_images out of $images are in use"
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fi
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logcheckresult "INFO" "$active_images active/$images in use"
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}
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check_6_2() {
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local id="6.2"
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local desc="Ensure that container sprawl is avoided (Manual)"
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local remediation="You should periodically check your container inventory on each host and clean up containers which are not in active use with the command: docker container prune"
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local remediationImpact="You should retain containers that are actively in use, and delete ones which are no longer needed."
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local check="$id - $desc"
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starttestjson "$id" "$desc"
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total_containers=$(docker info 2>/dev/null | grep "Containers" | awk '{print $2}')
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running_containers=$(docker ps -q | wc -l | awk '{print $1}')
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diff="$((total_containers - running_containers))"
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info -c "$check"
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if [ "$diff" -gt 25 ]; then
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info " * There are currently a total of $total_containers containers, with only $running_containers of them currently running"
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else
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info " * There are currently a total of $total_containers containers, with $running_containers of them currently running"
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fi
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logcheckresult "INFO" "$total_containers total/$running_containers running"
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}
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check_6_end() {
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endsectionjson
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}
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