mirror of
https://github.com/docker/docker-bench-security.git
synced 2025-01-19 00:32:34 +01:00
683 lines
19 KiB
Bash
683 lines
19 KiB
Bash
#!/bin/sh
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logit "\n"
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info "5 - Container Runtime"
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# If containers is empty, there are no running containers
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if [ -z "$containers" ]; then
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info " * No containers running, skipping Section 5"
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else
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# Make the loop separator be a new-line in POSIX compliant fashion
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set -f; IFS=$'
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'
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# 5.1
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check_5_1="5.1 - Verify AppArmor Profile, if applicable"
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fail=0
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for c in $containers; do
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policy=$(docker inspect --format 'AppArmorProfile={{ .AppArmorProfile }}' "$c")
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if [ "$policy" = "AppArmorProfile=" -o "$policy" = "AppArmorProfile=[]" -o "$policy" = "AppArmorProfile=<no value>" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_1"
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warn " * No AppArmorProfile Found: $c"
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fail=1
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else
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warn " * No AppArmorProfile Found: $c"
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fi
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fi
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done
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# We went through all the containers and found none without AppArmor
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if [ $fail -eq 0 ]; then
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pass "$check_5_1"
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fi
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# 5.2
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check_5_2="5.2 - Verify SELinux security options, if applicable"
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fail=0
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for c in $containers; do
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policy=$(docker inspect --format 'SecurityOpt={{ .HostConfig.SecurityOpt }}' "$c")
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if [ "$policy" = "SecurityOpt=" -o "$policy" = "SecurityOpt=[]" -o "$policy" = "SecurityOpt=<no value>" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_2"
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warn " * No SecurityOptions Found: $c"
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fail=1
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else
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warn " * No SecurityOptions Found: $c"
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fi
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fi
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done
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# We went through all the containers and found none without SELinux
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if [ $fail -eq 0 ]; then
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pass "$check_5_2"
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fi
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# 5.3
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check_5_3="5.3 - Restrict Linux Kernel Capabilities within containers"
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fail=0
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for c in $containers; do
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caps=$(docker inspect --format 'CapAdd={{ .HostConfig.CapAdd}}' "$c")
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if [ "$caps" != 'CapAdd=' -a "$caps" != 'CapAdd=[]' -a "$caps" != 'CapAdd=<no value>' -a "$caps" != 'CapAdd=<nil>' ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_3"
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warn " * Capabilities added: $caps to $c"
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fail=1
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else
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warn " * Capabilities added: $caps to $c"
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fi
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fi
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done
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# We went through all the containers and found none with extra capabilities
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if [ $fail -eq 0 ]; then
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pass "$check_5_3"
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fi
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# 5.4
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check_5_4="5.4 - Do not use privileged containers"
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fail=0
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for c in $containers; do
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privileged=$(docker inspect --format '{{ .HostConfig.Privileged }}' "$c")
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if [ "$privileged" = "true" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_4"
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warn " * Container running in Privileged mode: $c"
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fail=1
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else
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warn " * Container running in Privileged mode: $c"
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fi
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fi
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done
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# We went through all the containers and found no privileged containers
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if [ $fail -eq 0 ]; then
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pass "$check_5_4"
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fi
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# 5.5
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check_5_5="5.5 - Do not mount sensitive host system directories on containers"
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# List of sensitive directories to test for. Script uses new-lines as a separator.
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# Note the lack of identation. It needs it for the substring comparison.
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sensitive_dirs='/boot
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/dev
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/etc
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/lib
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/proc
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/sys
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/usr'
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fail=0
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for c in $containers; do
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docker inspect --format '{{ .VolumesRW }}' "$c" 2>/dev/null 1>&2
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if [ $? -eq 0 ]; then
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volumes=$(docker inspect --format '{{ .VolumesRW }}' "$c")
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else
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volumes=$(docker inspect --format '{{ .Mounts }}' "$c")
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fi
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# Go over each directory in sensitive dir and see if they exist in the volumes
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for v in $sensitive_dirs; do
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sensitive=0
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contains "$volumes" "$v:" && sensitive=1
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if [ $sensitive -eq 1 ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_5"
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warn " * Sensitive directory $v mounted in: $c"
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fail=1
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else
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warn " * Sensitive directory $v mounted in: $c"
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fi
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fi
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done
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done
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# We went through all the containers and found none with sensitive mounts
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if [ $fail -eq 0 ]; then
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pass "$check_5_5"
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fi
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# 5.6
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check_5_6="5.6 - Do not run ssh within containers"
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fail=0
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printcheck=0
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for c in $containers; do
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processes=$(docker exec "$c" ps -el 2>/dev/null | grep -c sshd | awk '{print $1}')
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if [ "$processes" -ge 1 ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_6"
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warn " * Container running sshd: $c"
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fail=1
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printcheck=1
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else
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warn " * Container running sshd: $c"
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fi
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fi
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exec_check=$(docker exec "$c" ps -el 2>/dev/null)
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if [ $? -eq 255 ]; then
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if [ $printcheck -eq 0 ]; then
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warn "$check_5_6"
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printcheck=1
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fi
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warn " * Docker exec fails: $c"
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fail=1
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fi
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done
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# We went through all the containers and found none with sshd
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if [ $fail -eq 0 ]; then
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pass "$check_5_6"
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fi
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# 5.7
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check_5_7="5.7 - Do not map privileged ports within containers"
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fail=0
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for c in $containers; do
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# Port format is private port -> ip: public port
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ports=$(docker port "$c" | awk '{print $0}' | cut -d ':' -f2)
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# iterate through port range (line delimited)
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for port in $ports; do
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if [ ! -z "$port" ] && [ "0$port" -lt 1024 ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_7"
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warn " * Privileged Port in use: $port in $c"
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fail=1
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else
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warn " * Privileged Port in use: $port in $c"
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fi
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fi
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done
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done
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# We went through all the containers and found no privileged ports
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if [ $fail -eq 0 ]; then
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pass "$check_5_7"
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fi
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# 5.9
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check_5_9="5.9 - Do not share the host's network namespace"
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fail=0
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for c in $containers; do
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mode=$(docker inspect --format 'NetworkMode={{ .HostConfig.NetworkMode }}' "$c")
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if [ "$mode" = "NetworkMode=host" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_9"
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warn " * Container running with networking mode 'host': $c"
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fail=1
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else
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warn " * Container running with networking mode 'host': $c"
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fi
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fi
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done
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# We went through all the containers and found no Network Mode host
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if [ $fail -eq 0 ]; then
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pass "$check_5_9"
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fi
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# 5.10
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check_5_10="5.10 - Limit memory usage for container"
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fail=0
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for c in $containers; do
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docker inspect --format '{{ .Config.Memory }}' "$c" 2> /dev/null 1>&2
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if [ "$?" -eq 0 ]; then
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memory=$(docker inspect --format '{{ .Config.Memory }}' "$c")
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else
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memory=$(docker inspect --format '{{ .HostConfig.Memory }}' "$c")
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fi
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if [ "$memory" = "0" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_10"
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warn " * Container running without memory restrictions: $c"
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fail=1
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else
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warn " * Container running without memory restrictions: $c"
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fi
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fi
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done
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# We went through all the containers and found no lack of Memory restrictions
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if [ $fail -eq 0 ]; then
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pass "$check_5_10"
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fi
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# 5.11
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check_5_11="5.11 - Set container CPU priority appropriately"
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fail=0
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for c in $containers; do
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docker inspect --format '{{ .Config.CpuShares }}' "$c" 2> /dev/null 1>&2
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if [ "$?" -eq 0 ]; then
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shares=$(docker inspect --format '{{ .Config.CpuShares }}' "$c")
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else
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shares=$(docker inspect --format '{{ .HostConfig.CpuShares }}' "$c")
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fi
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if [ "$shares" = "0" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_11"
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warn " * Container running without CPU restrictions: $c"
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fail=1
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else
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warn " * Container running without CPU restrictions: $c"
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fi
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fi
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done
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# We went through all the containers and found no lack of CPUShare restrictions
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if [ $fail -eq 0 ]; then
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pass "$check_5_11"
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fi
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# 5.12
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check_5_12="5.12 - Mount container's root filesystem as read only"
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fail=0
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for c in $containers; do
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read_status=$(docker inspect --format '{{ .HostConfig.ReadonlyRootfs }}' "$c")
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if [ "$read_status" = "false" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_12"
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warn " * Container running with root FS mounted R/W: $c"
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fail=1
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else
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warn " * Container running with root FS mounted R/W: $c"
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fi
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fi
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done
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# We went through all the containers and found no R/W FS mounts
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if [ $fail -eq 0 ]; then
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pass "$check_5_12"
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fi
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# 5.13
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check_5_13="5.13 - Bind incoming container traffic to a specific host interface"
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fail=0
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for c in $containers; do
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for ip in $(docker port "$c" | awk '{print $3}' | cut -d ':' -f1); do
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if [ "$ip" = "0.0.0.0" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_13"
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warn " * Port being bound to wildcard IP: $ip in $c"
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fail=1
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else
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warn " * Port being bound to wildcard IP: $ip in $c"
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fi
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fi
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done
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done
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# We went through all the containers and found no ports bound to 0.0.0.0
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if [ $fail -eq 0 ]; then
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pass "$check_5_13"
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fi
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# 5.14
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check_5_14="5.14 - Set the 'on-failure' container restart policy to 5"
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fail=0
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for c in $containers; do
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policy=$(docker inspect --format MaximumRetryCount='{{ .HostConfig.RestartPolicy.MaximumRetryCount }}' "$c")
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if [ "$policy" != "MaximumRetryCount=5" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_14"
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warn " * MaximumRetryCount is not set to 5: $c"
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fail=1
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else
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warn " * MaximumRetryCount is not set to 5: $c"
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fi
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fi
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done
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# We went through all the containers and they all had MaximumRetryCount=5
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if [ $fail -eq 0 ]; then
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pass "$check_5_14"
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fi
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# 5.15
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check_5_15="5.15 - Do not share the host's process namespace"
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fail=0
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for c in $containers; do
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mode=$(docker inspect --format 'PidMode={{.HostConfig.PidMode }}' "$c")
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if [ "$mode" = "PidMode=host" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_15"
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warn " * Host PID namespace being shared with: $c"
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fail=1
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else
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warn " * Host PID namespace being shared with: $c"
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fi
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fi
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done
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# We went through all the containers and found none with PidMode as host
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if [ $fail -eq 0 ]; then
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pass "$check_5_15"
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fi
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# 5.16
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check_5_16="5.16 - Do not share the host's IPC namespace"
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fail=0
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for c in $containers; do
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mode=$(docker inspect --format 'IpcMode={{.HostConfig.IpcMode }}' "$c")
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if [ "$mode" = "IpcMode=host" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_16"
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warn " * Host IPC namespace being shared with: $c"
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fail=1
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else
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warn " * Host IPC namespace being shared with: $c"
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fi
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fi
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done
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# We went through all the containers and found none with IPCMode as host
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if [ $fail -eq 0 ]; then
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pass "$check_5_16"
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fi
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# 5.17
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check_5_17="5.17 - Do not directly expose host devices to containers"
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fail=0
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for c in $containers; do
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devices=$(docker inspect --format 'Devices={{ .HostConfig.Devices }}' "$c")
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if [ "$devices" != "Devices=" -a "$devices" != "Devices=[]" -a "$devices" != "Devices=<no value>" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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info "$check_5_17"
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info " * Container has devices exposed directly: $c"
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fail=1
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else
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info " * Container has devices exposed directly: $c"
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fi
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fi
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done
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# We went through all the containers and found none with devices
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if [ $fail -eq 0 ]; then
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pass "$check_5_17"
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fi
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# 5.18
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check_5_18="5.18 - Override default ulimit at runtime only if needed"
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# List all the running containers, ouput their ID and host devices
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fail=0
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for c in $containers; do
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ulimits=$(docker inspect --format 'Ulimits={{ .HostConfig.Ulimits }}' "$c")
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if [ "$ulimits" = "Ulimits=" -o "$ulimits" = "Ulimits=[]" -o "$ulimits" = "Ulimits=<no value>" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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info "$check_5_18"
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info " * Container no default ulimit override: $c"
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fail=1
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else
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info " * Container no default ulimit override: $c"
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fi
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fi
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done
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# We went through all the containers and found none without Ulimits
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if [ $fail -eq 0 ]; then
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pass "$check_5_18"
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fi
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# 5.19
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check_5_19="5.19 - Do not set mount propagation mode to shared"
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fail=0
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for c in $containers; do
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mode=$(docker inspect --format 'Propagation={{range $mnt := .Mounts}} {{json $mnt.Propagation}} {{end}}' "$c")
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if [ "$mode" = "Propagation=shared" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_19"
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warn " * Mount propagation mode is shared: $c"
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fail=1
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else
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warn " * Mount propagation mode is shared: $c"
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fi
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fi
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done
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# We went through all the containers and found none with shared propagation mode
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if [ $fail -eq 0 ]; then
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pass "$check_5_19"
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fi
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# 5.20
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check_5_20="5.20 - Do not share the host's UTS namespace"
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fail=0
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for c in $containers; do
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mode=$(docker inspect --format 'UTSMode={{.HostConfig.UTSMode }}' "$c")
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if [ "$mode" = "UTSMode=host" ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_20"
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warn " * Host UTS namespace being shared with: $c"
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fail=1
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else
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warn " * Host UTS namespace being shared with: $c"
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fi
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fi
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done
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# We went through all the containers and found none with UTSMode as host
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if [ $fail -eq 0 ]; then
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pass "$check_5_20"
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fi
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# 5.21
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check_5_21="5.21 - Do not disable default seccomp profile"
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fail=0
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for c in $containers; do
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docker inspect --format 'SecurityOpt={{.HostConfig.SecurityOpt }}' "$c" | grep 'seccomp:unconfined' 2>/dev/null 1>&2
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if [ $? -eq 0 ]; then
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# If it's the first container, fail the test
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if [ $fail -eq 0 ]; then
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warn "$check_5_21"
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warn " * Default seccomp profile disabled: $c"
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fail=1
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else
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warn " * Default seccomp profile disabled: $c"
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fi
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fi
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done
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# We went through all the containers and found none with default secomp profile disabled
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if [ $fail -eq 0 ]; then
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pass "$check_5_21"
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fi
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# 5.24
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check_5_24="5.24 - Confirm cgroup usage"
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fail=0
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for c in $containers; do
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mode=$(docker inspect --format 'CgroupParent={{.HostConfig.CgroupParent }}x' "$c")
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if [ "$mode" != "CgroupParent=x" ]; then
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# If it's the first container, fail the test
|
|
if [ $fail -eq 0 ]; then
|
|
info "$check_5_24"
|
|
info " * Confirm cgroup usage: $c"
|
|
fail=1
|
|
else
|
|
info " * Confirm cgroup usage: $c"
|
|
fi
|
|
fi
|
|
done
|
|
# We went through all the containers and found none with UTSMode as host
|
|
if [ $fail -eq 0 ]; then
|
|
pass "$check_5_24"
|
|
fi
|
|
|
|
# 5.25
|
|
check_5_25="5.25 - Restrict container from acquiring additional privileges"
|
|
|
|
fail=0
|
|
for c in $containers; do
|
|
docker inspect --format 'SecurityOpt={{.HostConfig.SecurityOpt }}' "$c" | grep 'no-new-privileges' 2>/dev/null 1>&2
|
|
|
|
if [ $? -ne 0 ]; then
|
|
# If it's the first container, fail the test
|
|
if [ $fail -eq 0 ]; then
|
|
warn "$check_5_25"
|
|
warn " * Privileges not restricted: $c"
|
|
fail=1
|
|
else
|
|
warn " * Privileges not restricted: $c"
|
|
fi
|
|
fi
|
|
done
|
|
# We went through all the containers and found none with capability to acquire additional privileges
|
|
if [ $fail -eq 0 ]; then
|
|
pass "$check_5_25"
|
|
fi
|
|
|
|
# 5.26
|
|
check_5_26="5.26 - Check container health at runtime"
|
|
|
|
fail=0
|
|
for c in $containers; do
|
|
docker inspect --format '{{ .Id }}: Health={{ .State.Health.Status }}' "$c" 2>/dev/null 1>&2
|
|
if [ $? -ne 0 ]; then
|
|
if [ $fail -eq 0 ]; then
|
|
warn "$check_5_26"
|
|
warn " * Health check not set for $c"
|
|
fail=1
|
|
else
|
|
warn " * Health check not set for $c"
|
|
fi
|
|
fi
|
|
done
|
|
if [ $fail -eq 0 ]; then
|
|
pass "$check_5_26"
|
|
fi
|
|
|
|
# 5.28
|
|
check_5_28="5.28 - Use PIDs cgroup limit"
|
|
|
|
fail=0
|
|
for c in $containers; do
|
|
pidslimit=`docker inspect --format '{{.HostConfig.PidsLimit }}' "$c"`
|
|
|
|
if [ $pidslimit -le 0 ]; then
|
|
# If it's the first container, fail the test
|
|
if [ $fail -eq 0 ]; then
|
|
warn "$check_5_28"
|
|
warn " * pidslimit not set: $c"
|
|
fail=1
|
|
else
|
|
warn " * pidslimit not set: $c"
|
|
fi
|
|
fi
|
|
done
|
|
# We went through all the containers and found all with PIDs limit
|
|
if [ $fail -eq 0 ]; then
|
|
pass "$check_5_28"
|
|
fi
|
|
|
|
# 5.29
|
|
check_5_29="5.29 - Do not use Docker's default bridge docker0"
|
|
|
|
fail=0
|
|
networks=`docker network ls -q 2>/dev/null`
|
|
for net in $networks; do
|
|
docker network inspect --format '{{ .Options }}' "$net" 2>/dev/null | grep "com.docker.network.bridge.name:docker0" >/dev/null 2>&1
|
|
|
|
if [ $? -eq 0 ]; then
|
|
docker0Containers=`docker network inspect --format='{{ range $k, $v := .Containers }} {{ $k }} {{ end }}' "$net" 2>/dev/null`
|
|
if [ -n "$docker0Containers" ]; then
|
|
if [ $fail -eq 0 ]; then
|
|
warn "$check_5_29"
|
|
fail=1
|
|
fi
|
|
for c in $docker0Containers; do
|
|
warn " * Container in docker0 network: $c"
|
|
done
|
|
fi
|
|
fi
|
|
done
|
|
# We went through all the containers and found none in docker0 network
|
|
if [ $fail -eq 0 ]; then
|
|
pass "$check_5_29"
|
|
fi
|
|
|
|
# 5.30
|
|
check_5_30="5.30 - Do not share the host's user namespaces"
|
|
|
|
fail=0
|
|
for c in $containers; do
|
|
docker inspect --format '{{ .HostConfig.UsernsMode }}' "$c" 2>/dev/null | grep -i 'host' >/dev/null 2>&1
|
|
|
|
if [ $? -eq 0 ]; then
|
|
# If it's the first container, fail the test
|
|
if [ $fail -eq 0 ]; then
|
|
warn "$check_5_30"
|
|
warn " * Namespace shared: $c"
|
|
fail=1
|
|
else
|
|
warn " * Namespace shared: $c"
|
|
fi
|
|
fi
|
|
done
|
|
# We went through all the containers and found none with host's user namespace shared
|
|
if [ $fail -eq 0 ]; then
|
|
pass "$check_5_30"
|
|
fi
|
|
|
|
# 5.31
|
|
check_5_31="5.31 - Do not mount the Docker socket inside any containers"
|
|
|
|
fail=0
|
|
for c in $containers; do
|
|
docker inspect --format '{{ .Mounts }}' "$c" 2>/dev/null | grep 'docker.sock' >/dev/null 2>&1
|
|
|
|
if [ $? -eq 0 ]; then
|
|
# If it's the first container, fail the test
|
|
if [ $fail -eq 0 ]; then
|
|
warn "$check_5_31"
|
|
warn " * Docker socket shared: $c"
|
|
fail=1
|
|
else
|
|
warn " * Docker socket shared: $c"
|
|
fi
|
|
fi
|
|
done
|
|
# We went through all the containers and found none with docker.sock shared
|
|
if [ $fail -eq 0 ]; then
|
|
pass "$check_5_31"
|
|
fi
|
|
fi
|