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ADD(4.1.1.4): add new check

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This commit is contained in:
Thibault Ayanides 2021-01-04 09:03:44 +01:00
parent b6fff5b8b6
commit a5e1cb90cd
2 changed files with 58 additions and 8 deletions
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50
bin/hardening/4.1.1.4_audit_backlog_limit.sh
View File

@ -17,14 +17,60 @@ HARDENING_LEVEL=4
# shellcheck disable=2034
DESCRIPTION="Configure audit_backlog_limit to be sufficient."
FILE='/etc/default/grub'
OPTIONS='GRUB_CMDLINE_LINUX="audit_backlog_limit=8192"'
# This function will be called if the script status is on enabled / audit mode
audit() {
:
does_file_exist "$FILE"
if [ "$FNRET" != 0 ]; then
crit "$FILE does not exist"
else
ok "$FILE exists, checking configuration"
for GRUB_OPTION in $OPTIONS; do
GRUB_PARAM=$(echo "$GRUB_OPTION" | cut -d= -f 1)
GRUB_VALUE=$(echo "$GRUB_OPTION" | cut -d= -f 2,3)
PATTERN="^$GRUB_PARAM=$GRUB_VALUE"
debug "$GRUB_PARAM should be set to $GRUB_VALUE"
does_pattern_exist_in_file "$FILE" "$PATTERN"
if [ "$FNRET" != 0 ]; then
crit "$PATTERN is not present in $FILE"
else
ok "$PATTERN is present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply() {
:
does_file_exist "$FILE"
if [ "$FNRET" != 0 ]; then
warn "$FILE does not exist, creating it"
touch "$FILE"
else
ok "$FILE exists"
fi
for GRUB_OPTION in $OPTIONS; do
GRUB_PARAM=$(echo "$GRUB_OPTION" | cut -d= -f 1)
GRUB_VALUE=$(echo "$GRUB_OPTION" | cut -d= -f 2,3)
debug "$GRUB_PARAM should be set to $GRUB_VALUE"
PATTERN="^$GRUB_PARAM=$GRUB_VALUE"
does_pattern_exist_in_file "$FILE" "$PATTERN"
if [ "$FNRET" != 0 ]; then
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file "$FILE" "^$GRUB_PARAM"
if [ "$FNRET" != 0 ]; then
info "Parameter $GRUB_PARAM seems absent from $FILE, adding at the end"
add_end_of_file "$FILE" "$GRUB_PARAM = $GRUB_VALUE"
else
info "Parameter $GRUB_PARAM is present but with the wrong value -- Fixing"
replace_in_file "$FILE" "^$GRUB_PARAM=.*" "$GRUB_PARAM=$GRUB_VALUE"
fi
else
ok "$PATTERN is present in $FILE"
fi
done
}
# This function will check config parameters required

4
tests/hardening/4.1.1.4_audit_backlog_limit.sh
View File

@ -1,6 +1,9 @@
# shellcheck shell=bash
# run-shellcheck
test_audit() {
if [ -f "/.dockerenv" ]; then
skip "SKIPPED on docker"
else
describe Running on blank host
register_test retvalshouldbe 0
dismiss_count_for_test
@ -8,4 +11,5 @@ test_audit() {
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
# TODO fill comprehensive tests
fi
}