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fix: update record_mac_edit.sh to use apparmor instead of selinux (#262)

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Update record_mac_edit.sh to be compliant with debian11 and debian12 CIS recommendations.

fix issue #195

Co-authored-by: Damien Cavagnini <damien.cavagnini@corp.ovh.com>
This commit is contained in:
damcav35
2025-07-03 09:27:09 +02:00
committed by GitHub
parent 99e6694261
commit 6123a56653
3 changed files with 27 additions and 44 deletions
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64
bin/hardening/record_mac_edit.sh
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@ -17,64 +17,48 @@ HARDENING_LEVEL=4
# shellcheck disable=2034
DESCRIPTION="Record events that modify the system's mandatory access controls (MAC)."
AUDIT_PARAMS='-w /etc/selinux/ -p wa -k MAC-policy'
FILES_TO_SEARCH='/etc/audit/audit.rules /etc/audit/rules.d/audit.rules'
FILE='/etc/audit/rules.d/audit.rules'
AUDIT_PARAMS=("-w /etc/apparmor/ -p wa -k MAC-policy" "-w /etc/apparmor.d/ -p wa -k MAC-policy")
AUDIT_FILE='/etc/audit/audit.rules'
ADDITIONAL_PATH="/etc/audit/rules.d"
FILE_TO_WRITE='/etc/audit/rules.d/audit.rules'
# This function will be called if the script status is on enabled / audit mode
audit() {
# define custom IFS and save default one
d_IFS=$IFS
c_IFS=$'\n'
IFS=$c_IFS
for AUDIT_VALUE in $AUDIT_PARAMS; do
debug "$AUDIT_VALUE should be in file $FILES_TO_SEARCH"
IFS=$d_IFS
MISSING_PARAMS=()
index=0
# use find here in order to simplify test usage with sudo using secaudit user
FILES_TO_SEARCH="$(sudo_wrapper find $ADDITIONAL_PATH -name '*.rules' | paste -s) $AUDIT_FILE"
for i in "${!AUDIT_PARAMS[@]}"; do
debug "${AUDIT_PARAMS[i]} should be in file $FILES_TO_SEARCH"
SEARCH_RES=0
for FILE_SEARCHED in $FILES_TO_SEARCH; do
does_pattern_exist_in_file "$FILE_SEARCHED" "$AUDIT_VALUE"
IFS=$c_IFS
does_pattern_exist_in_file "$FILE_SEARCHED" "${AUDIT_PARAMS[i]}"
if [ "$FNRET" != 0 ]; then
debug "$AUDIT_VALUE is not in file $FILE_SEARCHED"
debug "${AUDIT_PARAMS[i]} is not in file $FILE_SEARCHED"
else
ok "$AUDIT_VALUE is present in $FILE_SEARCHED"
ok "${AUDIT_PARAMS[i]} is present in $FILE_SEARCHED"
SEARCH_RES=1
fi
done
if [ "$SEARCH_RES" = 0 ]; then
crit "$AUDIT_VALUE is not present in $FILES_TO_SEARCH"
crit "${AUDIT_PARAMS[i]} is not present in $FILES_TO_SEARCH"
MISSING_PARAMS[i]="${AUDIT_PARAMS[i]}"
index=$((index + 1))
fi
done
IFS=$d_IFS
}
# This function will be called if the script status is on enabled mode
apply() {
# define custom IFS and save default one
d_IFS=$IFS
c_IFS=$'\n'
IFS=$c_IFS
for AUDIT_VALUE in $AUDIT_PARAMS; do
debug "$AUDIT_VALUE should be in file $FILES_TO_SEARCH"
IFS=$d_IFS
SEARCH_RES=0
for FILE_SEARCHED in $FILES_TO_SEARCH; do
does_pattern_exist_in_file "$FILE_SEARCHED" "$AUDIT_VALUE"
IFS=$c_IFS
if [ "$FNRET" != 0 ]; then
debug "$AUDIT_VALUE is not in file $FILE_SEARCHED"
else
ok "$AUDIT_VALUE is present in $FILE_SEARCHED"
SEARCH_RES=1
fi
done
if [ "$SEARCH_RES" = 0 ]; then
warn "$AUDIT_VALUE is not present in $FILES_TO_SEARCH, adding it to $FILE"
add_end_of_file "$FILE" "$AUDIT_VALUE"
eval "$(pkill -HUP -P 1 auditd)"
fi
audit
changes=0
for i in "${!MISSING_PARAMS[@]}"; do
info "${MISSING_PARAMS[i]} is not present in $FILES_TO_SEARCH, adding it"
add_end_of_file "$FILE_TO_WRITE" "${MISSING_PARAMS[i]}"
changes=1
done
IFS=$d_IFS
[ "$changes" -eq 0 ] || eval "$(pkill -HUP -P 1 auditd)"
}
# This function will check config parameters required