- etc_shadow_fields_not_empty.sh -> 7.2.2

Author: damien cavagnini

bin/hardening/passwd_accounts_use_shadow.sh renamed to bin/hardening/etc_passwd_accounts_use_shadow.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+
+# run-shellcheck
+#
+# CIS Debian Hardening
+#
+
+#
+# Ensure /etc/shadow password fields are not empty (Automated)
+#
+
+set -e # One error, it's over
+set -u # One variable unset, it's over
+
+# shellcheck disable=2034
+HARDENING_LEVEL=1
+# shellcheck disable=2034
+DESCRIPTION="Ensure /etc/shadow password fields are not empty"
+EXCEPTIONS=""
+
+# This function will be called if the script status is on enabled / audit mode
+audit() {
+    INVALID_USERS=""
+
+    local tmp_invalid_users=""
+    tmp_invalid_users=$($SUDO_CMD cat /etc/shadow | awk -F: '($2 == "" ) { print $1 }')
+
+    if [ -n "$tmp_invalid_users" ]; then
+        for user in $tmp_invalid_users; do
+            if [ -n "$EXCEPTIONS" ]; then
+                if ! grep -w "$user" <<<"$EXCEPTIONS" >/dev/null; then
+                    crit "$user does not have a password"
+                    INVALID_USERS="$INVALID_USERS $user"
+                fi
+            else
+                crit "$user does not have a password"
+                INVALID_USERS="$INVALID_USERS $user"
+            fi
+        done
+    fi
+
+}
+
+# This function will be called if the script status is on enabled mode
+apply() {
+
+    if [ -n "$INVALID_USERS" ]; then
+        for user in $INVALID_USERS; do
+            info "locking $user"
+            passwd -l "$user"
+        done
+    fi
+}
+
+# This function will check config parameters required
+check_config() {
+    :
+}
+
+# maybe someone is gonna have a legit use case....
+create_config() {
+    cat <<EOF
+# shellcheck disable=2034
+status=audit
+# Put here the accounts that should keep their non shadowed password
+EXCEPTIONS=''
+EOF
+}
+
+# Source Root Dir Parameter
+if [ -r /etc/default/cis-hardening ]; then
+    # shellcheck source=../../debian/default
+    . /etc/default/cis-hardening
+fi
+if [ -z "$CIS_LIB_DIR" ]; then
+    echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
+    echo "Cannot source CIS_LIB_DIR variable, aborting."
+    exit 128
+fi
+
+# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
+if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
+    # shellcheck source=../../lib/main.sh
+    . "${CIS_LIB_DIR}"/main.sh
+else
+    echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
+    exit 128
+fi

bin/hardening/etc_shadow_fields_not_empty.sh

@@ -0,0 +1,32 @@
+# shellcheck shell=bash
+# run-shellcheck
+test_audit() {
+    describe prepare test
+    useradd -M user_no_password
+    sed -i 's/user_no_password:!:/user_no_password::/' /etc/shadow
+
+    describe On purpose failing test
+    register_test retvalshouldbe 1
+    # shellcheck disable=2154
+    run failed "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe correcting situation using exceptions
+    sed -i 's/EXCEPTIONS=.*$/EXCEPTIONS=user_no_password/' "${CIS_CONF_DIR}/conf.d/${script}.cfg"
+
+    describe resolved test
+    register_test retvalshouldbe 0
+    run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe fix by locking user
+    sed -i 's/EXCEPTIONS=.*$/EXCEPTIONS=""/' "${CIS_CONF_DIR}/conf.d/${script}.cfg"
+    sed -i 's/audit/enabled/' "${CIS_CONF_DIR}/conf.d/${script}.cfg"
+    "${CIS_CHECKS_DIR}/${script}.sh" --apply || true
+
+    describe resolved test
+    register_test retvalshouldbe 0
+    run resolved "${CIS_CHECKS_DIR}/${script}.sh" --audit-all
+
+    describe clean test
+    userdel user_no_password
+
+}