Security for Elastic Stack (#196)

2019-07-08 14:02:19 +02:00
parent d98ab1b4f3
commit 065b5bb5cf
21 changed files with 956 additions and 211 deletions
@@ -0,0 +1,130 @@
+#!/bin/bash
+# Wazuh App Copyright (C) 2019 Wazuh Inc. (License GPLv2)
+
+set -e
+
+##############################################################################
+# Waiting for elasticsearch
+##############################################################################
+
+if [ "x${ELASTICSEARCH_URL}" = "x" ]; then
+  el_url="http://elasticsearch:9200"
+else
+  el_url="${ELASTICSEARCH_URL}"
+fi
+
+KIBANA_USER=""
+KIBANA_PASS=""
+
+if [[ "x${SECURITY_CREDENTIALS_FILE}" == "x" ]]; then
+  KIBANA_USER=${SECURITY_KIBANA_USER}
+  KIBANA_PASS=${SECURITY_KIBANA_PASS}
+else
+  input=${SECURITY_CREDENTIALS_FILE}
+  while IFS= read -r line
+  do
+    if [[ $line == *"KIBANA_PASSWORD"* ]]; then
+      arrIN=(${line//:/ })
+      KIBANA_PASS=${arrIN[1]}
+    elif [[ $line == *"KIBANA_USER"* ]]; then
+      arrIN=(${line//:/ })
+      KIBANA_USER=${arrIN[1]}
+    fi
+  done < "$input"
+ 
+fi
+
+
+if [ ${SECURITY_ENABLED} != "no" ]; then
+  auth="-u ${KIBANA_USER}:${KIBANA_PASS} -k"
+elif [ ${ENABLED_XPACK} != "true" || "x${ELASTICSEARCH_USERNAME}" = "x" || "x${ELASTICSEARCH_PASSWORD}" = "x" ]; then
+  auth=""
+else
+  auth="--user ${ELASTICSEARCH_USERNAME}:${ELASTICSEARCH_PASSWORD}"
+fi
+
+until curl -XGET $el_url ${auth}; do
+  >&2 echo "Elastic is unavailable - sleeping"
+  sleep 5
+done
+
+sleep 2
+
+>&2 echo "Elasticsearch is up."
+
+
+##############################################################################
+# Waiting for wazuh alerts template
+##############################################################################
+
+strlen=0
+
+while [[ $strlen -eq 0 ]]
+do
+  template=$(curl $auth $el_url/_cat/templates/wazuh -s)
+  strlen=${#template}
+  >&2 echo "Wazuh alerts template not loaded - sleeping."
+  sleep 2
+done
+
+sleep 2
+
+>&2 echo "Wazuh alerts template is loaded."
+
+
+##############################################################################
+# If Secure access to Kibana is enabled, we must set the credentials.
+# We must create the ssl certificate.
+##############################################################################
+
+if [[ $SECURITY_ENABLED == "yes" ]]; then
+
+
+  # Create keystore
+  /usr/share/kibana/bin/kibana-keystore create
+  
+  echo "Setting security Kibana configuiration options."
+
+  echo "
+# Elasticsearch from/to Kibana
+elasticsearch.ssl.certificateAuthorities: [\"/usr/share/kibana/config/$SECURITY_CA_PEM\"]
+
+server.ssl.enabled: true
+server.ssl.certificate: $SECURITY_KIBANA_SSL_CERT_PATH/kibana-access.pem
+server.ssl.key: $SECURITY_KIBANA_SSL_KEY_PATH/kibana-access.key
+" >> /usr/share/kibana/config/kibana.yml
+
+  echo "Create SSL directories."
+
+  mkdir -p $SECURITY_KIBANA_SSL_KEY_PATH $SECURITY_KIBANA_SSL_CERT_PATH
+  CA_PATH="/usr/share/kibana/config"
+
+  echo "Creating SSL certificates."
+  
+  pushd $CA_PATH
+
+  chown kibana: $CA_PATH/$SECURITY_CA_PEM
+  chmod 400 $CA_PATH/$SECURITY_CA_PEM
+  SECURITY_KEY_PASS=`openssl rand -base64 32`
+  openssl req -batch -x509 -days 18250 -newkey rsa:2048 -keyout $SECURITY_KIBANA_SSL_KEY_PATH/kibana-access.key -out $SECURITY_KIBANA_SSL_CERT_PATH/kibana-access.pem -passout pass:"$SECURITY_KEY_PASS" >/dev/null
+  chown -R kibana: $CA_PATH/ssl
+  chmod -R 770 $CA_PATH/ssl
+  chmod 440 $SECURITY_KIBANA_SSL_CERT_PATH/kibana-access.pem
+
+  popd
+  echo "SSL certificates created."
+
+  # Add keys to keystore
+  echo -e "$KIBANA_PASS" | /usr/share/kibana/bin/kibana-keystore add elasticsearch.password --stdin
+  echo -e "$SECURITY_KEY_PASS" | /usr/share/kibana/bin/kibana-keystore add server.ssl.keyPassphrase --stdin
+  echo -e "$KIBANA_USER" | /usr/share/kibana/bin/kibana-keystore add elasticsearch.username --stdin
+
+fi
+
+##############################################################################
+# Run more configuration scripts.
+##############################################################################
+
+bash /usr/share/kibana/kibana_settings.sh &
+
+/usr/local/bin/kibana-docker