147 lines
4.3 KiB
Bash
Executable File
147 lines
4.3 KiB
Bash
Executable File
#!/bin/bash
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#
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# harbian-audit for Debian GNU/Linux debian 9 or CentOS 8 Hardening
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#
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#
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# 10.1.8 Set FAIL_DELAY Parameters Using pam_faildelay (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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audit_debian () {
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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=1
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else
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ok "$PACKAGE is installed"
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does_pattern_exist_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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check_param_pair_by_pam $FILE $PAMLIBNAME $OPTIONNAME ge $CONDT_VAL
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if [ $FNRET = 0 ]; then
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ok "$OPTIONNAME set condition is $CONDT_VAL"
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else
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crit "$OPTIONNAME set condition is not equal or greater than $CONDT_VAL"
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fi
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else
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crit "$PATTERN is not present in $FILE"
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FNRET=2
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fi
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fi
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}
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audit_centos () {
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SSH_PARAM=$(echo $OPTION | cut -d= -f 1)
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SSH_VALUE=$(echo $OPTION | cut -d= -f 2)
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PATTERN="^$SSH_PARAM[[:space:]]*[[:digit:]]*"
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does_pattern_exist_in_file $FILE "$PATTERN"
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if [ $FNRET = 0 ]; then
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ok "$SSH_PARAM is present in $FILE"
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if [ $(grep $PATTERN $FILE | awk '{print $2}') -ge 4 ]; then
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ok "$SSH_PARAM is set least four seconds between logon prompts following a failed console logon attempt"
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FNRET=0
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else
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crit "$SSH_PARAM is not set least four seconds between logon prompts following a failed console logon attempt"
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FNRET=2
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fi
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else
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crit "$PATTERN is not present in $FILE"
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FNRET=1
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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 / audit mode
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audit () {
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if [ $OS_RELEASE -eq 2 ]; then
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audit_centos
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else
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audit_debian
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fi
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}
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apply_debian () {
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if [ $FNRET = 0 ]; then
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ok "$PACKAGE is installed"
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elif [ $FNRET = 1 ]; then
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crit "$PACKAGE is absent, installing it"
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install_package $PACKAGE
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elif [ $FNRET = 2 ]; then
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crit "$PATTERN is not present in $FILE, add default config to $FILE"
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add_line_file_before_pattern $FILE "auth optional pam_faildelay.so delay=4000000" "# Outputs an issue file prior to each login prompt (Replaces the"
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elif [ $FNRET = 3 ]; then
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crit "$FILE is not exist, please check"
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elif [ $FNRET = 4 ]; then
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crit "$OPTIONNAME is not conf"
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add_option_to_auth_check $FILE $PAMLIBNAME "$OPTIONNAME=$CONDT_VAL"
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elif [ $FNRET = 5 ]; then
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crit "$OPTIONNAME set is not match legally, reset it to $CONDT_VAL"
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reset_option_to_auth_check $FILE $PAMLIBNAME "$OPTIONNAME" "$CONDT_VAL"
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fi
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}
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apply_centos () {
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if [ $FNRET = 0 ]; then
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ok "$SSH_PARAM is set least four seconds between logon prompts following a failed console logon attempt"
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elif [ $FNRET = 1 ]; then
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warn "$PATTERN is not present in $FILE, adding it"
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add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
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elif [ $FNRET = 2 ]; then
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warn "Parameter $SSH_PARAM is present but less than $SSH_VALUE -- Fixing"
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replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
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else
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:
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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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if [ $OS_RELEASE -eq 2 ]; then
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apply_centos
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else
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apply_debian
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fi
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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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# CentOS
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if [ $OS_RELEASE -eq 2 ]; then
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OPTION='FAIL_DELAY=4'
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FILE='/etc/login.defs'
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# Debian
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else
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PACKAGE='libpam-modules'
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PAMLIBNAME='pam_faildelay.so'
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PATTERN='^auth.*pam_faildelay.so'
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FILE='/etc/pam.d/login'
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OPTIONNAME='delay'
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# condition (microseconds)
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CONDT_VAL=4000000
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fi
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$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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