diff --git a/bin/hardening/9.3.22_sshd_MACs.sh b/bin/hardening/9.3.22_sshd_MACs.sh new file mode 100755 index 0000000..6a812ac --- /dev/null +++ b/bin/hardening/9.3.22_sshd_MACs.sh @@ -0,0 +1,93 @@ +#!/bin/bash + +# +# harbian audit 7/8/9 Hardening +# + +# +# 9.3.21 Set SSHD Compression to no (Scored) +# Authors : Samson wen, Samson +# + +set -e # One error, it's over +set -u # One variable unset, it's over + +HARDENING_LEVEL=2 + +PACKAGE='openssh-server' +OPTIONS='MACs=hmac-sha2-256,hmac-sha2-512' +FILE='/etc/ssh/sshd_config' + +# This function will be called if the script status is on enabled / audit mode +audit () { + is_pkg_installed $PACKAGE + if [ $FNRET != 0 ]; then + crit "$PACKAGE is not installed!" + else + ok "$PACKAGE is installed" + for SSH_OPTION in $OPTIONS; do + SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1) + SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2) + PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE" + does_pattern_exist_in_file $FILE "$PATTERN" + if [ $FNRET = 0 ]; then + ok "$PATTERN is present in $FILE" + else + crit "$PATTERN is not present in $FILE" + fi + done + fi +} + +# This function will be called if the script status is on enabled mode +apply () { + is_pkg_installed $PACKAGE + if [ $FNRET = 0 ]; then + ok "$PACKAGE is installed" + else + crit "$PACKAGE is absent, installing it" + apt_install $PACKAGE + fi + for SSH_OPTION in $OPTIONS; do + SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1) + SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2) + PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE" + does_pattern_exist_in_file $FILE "$PATTERN" + if [ $FNRET = 0 ]; then + ok "$PATTERN is present in $FILE" + else + warn "$PATTERN is not present in $FILE, adding it" + does_pattern_exist_in_file $FILE "^$SSH_PARAM" + if [ $FNRET != 0 ]; then + add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE" + else + info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing" + replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE" + fi + /etc/init.d/ssh reload > /dev/null 2>&1 + fi + done +} + +# This function will check config parameters required +check_config() { + : +} + +# Source Root Dir Parameter +if [ -r /etc/default/cis-hardening ]; then + . /etc/default/cis-hardening +fi +if [ -z "$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 + . $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