Add 9.2.14 to check nullok option of auth pam_unix
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Samson-W
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#!/bin/bash
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#
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# harbian audit 7/8/9 Hardening
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#
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#
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# 9.2.14 Configure password without blank or null passwords (Scored)
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# Authors : 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=3
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PACKAGE='libpam-modules'
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PATTERN='^auth.*pam_unix.so'
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FILE='/etc/pam.d/common-auth'
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KEYWORD='pam_unix.so'
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OPTIONNAME1='nullok'
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OPTIONNAME2='nullok_secure'
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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=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_auth_option_nullok_by_pam $KEYWORD $OPTIONNAME1 $OPTIONNAME2
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if [ $FNRET = 0 ]; then
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ok "$OPTIONNAME1 is not configured"
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elif [ $FNRET = 4 ]; then
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crit "$OPTIONNAME1 is configured"
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elif [ $FNRET = 5 ]; then
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crit "$OPTIONNAME2 is configured"
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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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# This function will be called if the script status is on enabled mode
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apply () {
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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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apt_install $PACKAGE
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elif [ $FNRET = 2 ]; then
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ok "$PATTERN is not present in $FILE, not need add"
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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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info "Delete option $OPTIONNAME1 from $FILE"
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sed -ie "s/$OPTIONNAME1//" $FILE
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elif [ $FNRET = 5 ]; then
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info "Delete option $OPTIONNAME2 from $FILE"
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sed -ie "s/$OPTIONNAME2//" $FILE
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fi
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$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 $CIS_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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37
lib/utils.sh
37
lib/utils.sh
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@ -545,3 +545,40 @@ reset_option_to_password_check()
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# password requisite pam_cracklib.so minlen=8 difok=3 retry=3
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# password requisite pam_cracklib.so minlen=8 difok=3 retry=3
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sed -ie "s/${OPTIONNAME}=./${OPTIONNAME}=${OPTIONVAL}/" $PAMPWDFILE
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sed -ie "s/${OPTIONNAME}=./${OPTIONNAME}=${OPTIONVAL}/" $PAMPWDFILE
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}
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}
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# Only check option name
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check_auth_option_nullok_by_pam()
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{
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KEYWORD=$1
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OPTION1=$2
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OPTION2=$3
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LOCATION="/etc/pam.d/common-auth"
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#Example:
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#KEYWORD="pam_unix.so"
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#OPTION1="nullok"
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#OPTION2="nullok_secure"
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if [ -f "$LOCATION" ];then
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RESULT=$(sed -e '/^#/d' -e '/^[ \t][ \t]*#/d' -e 's/#.*$//' -e '/^$/d' $LOCATION | grep "$KEYWORD.*$OPTION2" | wc -l)
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if [ "$RESULT" -eq 1 ]; then
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debug "$KEYWORD $OPTION2 is conf, that is error conf"
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FNRET=5
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else
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debug "$KEYWORD $OPTION2 is not conf, that is ok"
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RESULT=$(sed -e '/^#/d' -e '/^[ \t][ \t]*#/d' -e 's/#.*$//' -e '/^$/d' $LOCATION | grep "$KEYWORD.*$OPTION1" | wc -l)
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if [ "$RESULT" -eq 1 ]; then
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debug "$KEYWORD $OPTION1 is conf, that is error conf"
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FNRET=4
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else
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debug "$KEYWORD $OPTION1 is not conf, that is ok"
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FNRET=0
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fi
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fi
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else
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debug "$LOCATION is not exist"
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FNRET=3
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fi
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}
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