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89 lines
2.6 KiB
Bash
Executable File
89 lines
2.6 KiB
Bash
Executable File
#!/bin/bash
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#
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# CIS Debian 7 Hardening
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#
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#
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# 9.3.14 Set SSH Banner (Scored)
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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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PACKAGE='openssh-server'
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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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OPTIONS="Banner=$BANNER_FILE"
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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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else
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ok "$PACKAGE is installed"
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for SSH_OPTION in $OPTIONS; do
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SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
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PATTERN="^$SSH_PARAM[[:space:]]*"
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does_pattern_exists_in_file $FILE "$PATTERN"
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if [ $FNRET = 0 ]; then
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ok "$PATTERN is present in $FILE"
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else
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crit "$PATTERN is not present in $FILE"
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fi
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done
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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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is_pkg_installed $PACKAGE
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if [ $FNRET = 0 ]; then
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ok "$PACKAGE is installed"
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else
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crit "$PACKAGE is absent, installing it"
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apt_install $PACKAGE
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fi
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for SSH_OPTION in $OPTIONS; do
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SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
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SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
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PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
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does_pattern_exists_in_file $FILE "$PATTERN"
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if [ $FNRET = 0 ]; then
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ok "$PATTERN is present in $FILE"
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else
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warn "$PATTERN not present in $FILE, adding it"
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does_pattern_exists_in_file $FILE "^$SSH_PARAM"
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if [ $FNRET != 0 ]; then
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add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
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else
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info "Parameter $SSH_PARAM is present and activated"
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fi
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/etc/init.d/ssh reload
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fi
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done
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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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if [ -z $BANNER_FILE ]; then
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info "BANNER_FILE is not set, defaults to wildcard"
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BANNER_FILE='/etc/issue.net'
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fi
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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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echo "There is no /etc/default/cis-hardening file, cannot source CIS_ROOT_DIR variable, aborting"
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exit 128
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else
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. /etc/default/cis-hardening
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if [ -z $CIS_ROOT_DIR ]; then
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echo "No CIS_ROOT_DIR variable, aborting"
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exit 128
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fi
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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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[ -r $CIS_ROOT_DIR/lib/main.sh ] && . $CIS_ROOT_DIR/lib/main.sh
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