debian-cis/bin/hardening/5.3.4_acc_pam_sha512.sh
2020-12-22 14:42:45 +01:00

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#!/bin/bash
# run-shellcheck
#
# OVH Security audit
#
#
# 5.3.4 Ensure password hashing algorithm is SHA-512 (Scored)
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Check that any password that may exist in /etc/shadow is SHA512 hashed and salted"
CONF_FILE="/etc/pam.d/common-password"
CONF_LINE="^\s*password\s.+\s+pam_unix\.so\s+.*sha512"
# This function will be called if the script status is on enabled / audit mode
audit() {
# Check conf file for default SHA512 hash
if $SUDO_CMD [ ! -r "$CONF_FILE" ]; then
crit "$CONF_FILE is not readable"
else
# shellcheck disable=SC2001
does_pattern_exist_in_file "$CONF_FILE" "$(sed 's/ /[[:space:]]+/g' <<<"$CONF_LINE")"
if [ "$FNRET" = 0 ]; then
ok "$CONF_LINE is present in $CONF_FILE"
else
crit "$CONF_LINE is not present in $CONF_FILE"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply() {
if $SUDO_CMD [ ! -r "$CONF_FILE" ]; then
crit "$CONF_FILE is not readable"
else
# shellcheck disable=SC2001
does_pattern_exist_in_file "$CONF_FILE" "$(sed 's/ /[[:space:]]+/g' <<<"$CONF_LINE")"
if [ "$FNRET" = 0 ]; then
ok "$CONF_LINE is present in $CONF_FILE"
else
warn "$CONF_LINE is not present in $CONF_FILE"
add_line_file_before_pattern "$CONF_FILE" "password [success=1 default=ignore] pam_unix.so sha512" "# pam-auth-update(8) for details."
fi
fi
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
# shellcheck source=../../debian/default
. /etc/default/cis-hardening
fi
if [ -z "$CIS_ROOT_DIR" ]; then
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
echo "Cannot source CIS_ROOT_DIR variable, aborting."
exit 128
fi
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
# shellcheck source=../../lib/main.sh
. "$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