debian-cis/bin/hardening/8.1.1.3_keep_all_audit_logs.sh

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#!/bin/bash
#
# CIS Debian 7 Hardening
#
#
# 8.1.1.3 Keep All Auditing Information (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
FILE='/etc/audit/auditd.conf'
OPTIONS='max_log_file_action=keep_logs'
# 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 AUDIT_OPTION in $OPTIONS; do
AUDIT_PARAM=$(echo $AUDIT_OPTION | cut -d= -f 1)
AUDIT_VALUE=$(echo $AUDIT_OPTION | cut -d= -f 2)
PATTERN="^$AUDIT_PARAM[[:space:]]*=[[:space:]]*$AUDIT_VALUE"
debug "$AUDIT_PARAM should be set to $AUDIT_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 AUDIT_OPTION in $OPTIONS; do
AUDIT_PARAM=$(echo $AUDIT_OPTION | cut -d= -f 1)
AUDIT_VALUE=$(echo $AUDIT_OPTION | cut -d= -f 2)
debug "$AUDIT_PARAM should be set to $AUDIT_VALUE"
PATTERN="^$AUDIT_PARAM[[:space:]]*=[[:space:]]*$AUDIT_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 $FILE "^$AUDIT_PARAM"
if [ $FNRET != 0 ]; then
info "Parameter $AUDIT_PARAM seems absent from $FILE, adding at the end"
add_end_of_file $FILE "$AUDIT_PARAM = $AUDIT_VALUE"
else
info "Parameter $AUDIT_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$AUDIT_PARAM[[:space:]]*=.*" "$AUDIT_PARAM = $AUDIT_VALUE"
fi
else
ok "$PATTERN is present in $FILE"
fi
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ ! -r /etc/default/cis-hardening ]; then
echo "There is no /etc/default/cis-hardening file, cannot source CIS_ROOT_DIR variable, aborting"
exit 128
else
. /etc/default/cis-hardening
if [ -z ${CIS_ROOT_DIR:-} ]; then
echo "No CIS_ROOT_DIR variable, aborting"
exit 128
fi
fi
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
. $CIS_ROOT_DIR/lib/main.sh
else
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
exit 128
fi