Linux Integrity Measurement Architecture (IMA) Helpers

README.md

IMA Helper Scripts

ima-duplicates.sh

#!/bin/bash

set -euo pipefail

cat /sys/kernel/security/ima/ascii_runtime_measurements | awk '{print $5}' | sort | uniq -c | sort -n -r

ima-policy.sh

#!/bin/bash

set -euo pipefail

cat << EOF
dont_measure fsmagic=0x9fa0
dont_measure fsmagic=0x62656572
dont_measure fsmagic=0x64626720
dont_measure fsmagic=0x1021994
dont_measure fsmagic=0x1cd1
dont_measure fsmagic=0x42494e4d
dont_measure fsmagic=0x73636673
dont_measure fsmagic=0xf97cff8c
dont_measure fsmagic=0x43415d53
dont_measure fsmagic=0x27e0eb
dont_measure fsmagic=0x63677270
dont_measure fsmagic=0x6e736673
EOF

cat << EOF
dont_measure obj_type=container_share_t
dont_measure obj_type=container_var_lib_t
EOF

cat << EOF
measure func=MMAP_CHECK mask=MAY_EXEC
measure func=BPRM_CHECK mask=MAY_EXEC
measure func=FILE_CHECK euid=0 mask=MAY_EXEC
measure func=FILE_CHECK uid=0 mask=MAY_EXEC
measure func=MODULE_CHECK
measure func=FIRMWARE_CHECK
measure func=POLICY_CHECK
EOF

cat /etc/selinux/targeted/contexts/files/file_contexts | grep [A-Za-z0-9_]*unit_file_t --only-matching | sort | uniq | while read CONTEXT; do
    echo "measure obj_type=${CONTEXT}"
done

cat /etc/selinux/targeted/contexts/files/file_contexts | grep [A-Za-z0-9_]*config_t --only-matching | sort | uniq | while read CONTEXT; do
    echo "measure obj_type=${CONTEXT}"
done

cat /etc/selinux/targeted/contexts/files/file_contexts | grep [A-Za-z0-9_]*conf_t --only-matching | sort | uniq | while read CONTEXT; do
    echo "measure obj_type=${CONTEXT}"
done

cat /etc/selinux/targeted/contexts/files/file_contexts | grep [A-Za-z0-9_]*cert_t --only-matching | sort | uniq | while read CONTEXT; do
    echo "measure obj_type=${CONTEXT}"
done

cat /etc/selinux/targeted/contexts/files/file_contexts | grep [A-Za-z0-9_]*key_t --only-matching | sort | uniq | while read CONTEXT; do
    echo "measure obj_type=${CONTEXT}"
done

cat /etc/selinux/targeted/contexts/files/file_contexts | grep [A-Za-z0-9_]*secret_t --only-matching | sort | uniq | while read CONTEXT; do
    echo "measure obj_type=${CONTEXT}"
done

ima-volatile.sh

#!/bin/bash

set -euo pipefail

cat /sys/kernel/security/ima/ascii_runtime_measurements | awk '{print $5}' | sort | uniq | while read FILE; do
    if [ ! -f ${FILE} ]; then echo ${FILE}; fi
done