117 lines
3.5 KiB
Bash
Executable File
117 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
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#
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# harbian-audit for Debian GNU/Linux 7/8/9 Hardening
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#
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#
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# 9.3.21 Set SSHD MACs to hmac-sha2-256,hmac-sha2-512 (Scored)
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# Author : Samson wen, Samson <sccxboy@gmail.com>
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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HARDENING_LEVEL=2
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PACKAGE='openssh-server'
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OPTIONS='MACs=hmac-sha2-256,hmac-sha2-512'
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FILE='/etc/ssh/sshd_config'
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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is_pkg_installed $PACKAGE
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if [ $FNRET != 0 ]; then
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crit "$PACKAGE is not installed!"
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FNRET=5
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else
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SSH_PARAM=$(echo $OPTIONS | cut -d= -f 1)
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SSH_VALUES=$(echo $OPTIONS | cut -d= -f 2)
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VALUES_CHECK=$(echo $SSH_VALUES | sed 's@,@ @g')
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VALUES_RUNTIME=$(sshd -T | grep -i $SSH_PARAM | awk '{print $2}')
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SET_VALUES_TMP=""
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for VALUE in $VALUES_CHECK; do
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if [ $(echo $VALUES_RUNTIME | grep -wc $VALUE) -eq 1 ]; then
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ok "$VALUE has set in the runtime configuration."
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else
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SET_VALUES_TMP+="$VALUE"
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crit "$VALUE is not set in the runtime configuration."
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fi
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done
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SET_VALUES=$(echo ${SET_VALUES_TMP%?})
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if [ "${SET_VALUES}Harbian" = "Harbian" ]; then
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FNRET=0
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else
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crit "Need to add set values ${SET_VALUES} to sshd_config."
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FNRET=1
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fi
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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SSH_PARAM=$(echo $OPTIONS | cut -d= -f 1)
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SSH_VALUES=$(echo $OPTIONS | cut -d= -f 2)
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case $FNRET in
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0) ok "The value of keyword $SSH_PARAM has set to $SSH_VALUES, it's correct."
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;;
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1) VALUES_CHECK=$(echo $SSH_VALUES | sed 's@,@ @g')
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VALUES_RUNTIME=$(sshd -T | grep -i $SSH_PARAM | awk '{print $2}')
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SET_VALUES_TMP=""
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for VALUE in $VALUES_CHECK; do
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if [ $(echo $VALUES_RUNTIME | grep -wc $VALUE) -eq 1 ]; then
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debug "$VALUE has set in the runtime configuration."
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else
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debug "$VALUE is not set in the runtime configuration."
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SET_VALUES_TMP+="$VALUE,"
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fi
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done
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SET_VALUES=$(echo ${SET_VALUES_TMP%?})
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if [ "${SET_VALUES}Harbian" = "Harbian" ]; then
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:
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else
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warn "Need to add set values ${SET_VALUES} to sshd_config."
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PATTERN="^$SSH_PARAM[[:space:]]*"
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does_pattern_exist_in_file $FILE "$PATTERN"
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SET_VALUES_NOW="${VALUES_RUNTIME},${SET_VALUES}"
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if [ $FNRET = 0 ]; then
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warn "$SSH_PARAM has exist $FILE, replace new values $SET_VALUES_NOW to $FILE, fixing and reload"
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replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SET_VALUES_NOW"
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/etc/init.d/ssh reload > /dev/null 2>&1
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else
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warn "$SSH_PARAM is not present in $FILE, need add to sshd_config and reload"
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add_end_of_file $FILE "$SSH_PARAM $SET_VALUES_NOW"
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/etc/init.d/ssh reload > /dev/null 2>&1
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fi
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fi
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;;
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5) warn "$PACKAGE is absent, installing it"
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install_package $PACKAGE
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;;
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*) ;;
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esac
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_ROOT_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_ROOT_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then
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. $CIS_ROOT_DIR/lib/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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