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Merge pull request #860 from topimiettinen/harden-mount-options 

Harden mount options for /var, check also /dev and /run
This commit is contained in:
Michael Boelen 2020-03-24 13:27:50 +01:00 committed by GitHub
parent dbfadc5446 72e8f572bf
commit f83025a283
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1 changed files with 10 additions and 3 deletions
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13
include/tests_filesystems
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@ -555,16 +555,18 @@
# ---------------------------------------------------------
# Mount point nodev noexec nosuid
# /boot v v v
# /dev v v
# /dev/shm v v v
# /home v v
# /run v v
# /tmp v v v
# /var v
# /var v v
# /var/log v v v
# /var/log/audit v v v
# /var/tmp v v v
# ---------------------------------------------------------
FILESYSTEMS_TO_CHECK="/boot:nodev,noexec,nosuid /dev/shm:nosuid,nodev,noexec /home:nodev,nosuid /tmp:nodev,noexec,nosuid /var:nosuid /var/log:nodev,noexec,nosuid /var/log/audit:nodev,noexec,nosuid /var/tmp:nodev,noexec,nosuid"
FILESYSTEMS_TO_CHECK="/boot:nodev,noexec,nosuid /dev:noexec,nosuid /dev/shm:nosuid,nodev,noexec /home:nodev,nosuid /run:nodev,nosuid /tmp:nodev,noexec,nosuid /var:nodev,nosuid /var/log:nodev,noexec,nosuid /var/log/audit:nodev,noexec,nosuid /var/tmp:nodev,noexec,nosuid"
Register --test-no FILE-6374 --os Linux --weight L --network NO --category security --description "Linux mount options"
if [ ${SKIPTEST} -eq 0 ]; then
if [ -f ${ROOTDIR}etc/fstab ]; then
@ -578,9 +580,14 @@
FS_FSTAB=""
fi
fi
if [ -z "${FS_FSTAB}" ]; then # not found in fstab, check if mounted otherwise
FS_FSTAB=$(mount | ${AWKBINARY} -v fs=${FILESYSTEM} '{ if ($3==fs) { print $6 } }')
FOUND_FLAGS=$(mount | ${AWKBINARY} -v fs=${FILESYSTEM} '{ if ($1~"[^#]" && $3==fs) { print $6 } }' | ${SEDBINARY} 's/,/ /g' | ${TRBINARY} '\n' ' ')
else
FOUND_FLAGS=$(${AWKBINARY} -v fs=${FILESYSTEM} '{ if ($1~"[^#]" && $2==fs) { print $4 } }' ${ROOTDIR}etc/fstab | ${SEDBINARY} 's/,/ /g' | ${TRBINARY} '\n' ' ')
fi
if [ -n "${FS_FSTAB}" ]; then
# In awk using caret/circumflex as first character between brackets, means 'not' (instead of beginning of line)
FOUND_FLAGS=$(${AWKBINARY} -v fs=${FILESYSTEM} '{ if ($1~"[^#]" && $2==fs) { print $4 } }' ${ROOTDIR}etc/fstab | ${SEDBINARY} 's/,/ /g' | ${TRBINARY} '\n' ' ')
LogText "File system: ${FILESYSTEM}"
LogText "Expected flags: ${EXPECTED_FLAGS}"
LogText "Found flags: ${FOUND_FLAGS}"