Magpie

Open Raven's Open Source Cloud Security Framework

What is Magpie?
Overview
- Magpie Architecture
Building Magpie
- Clone and build Magpie
Running Magpie

What is Magpie?

Magpie is a free, open-source framework and a collection of community developed plugins that can be used to build complete end-to-end security tools such as a CSPM or Cloud Security Posture Manager. The project was originally created and is maintained by Open Raven. We build commercial cloud native data security tools and in doing so have learned a great deal about how to discover AWS assets and their security settings at scale.

We also heard that many people were frustrated with their existing security tools that couldn't be extended and couldn't work well with their other systems, so decided to create this Magpie framework and refactor and sync our core AWS commercial discovery code as the first plugin.

We plan to actively contribute additional modules to make Magpie a credible free open source alternative to commercial CSPM’s and welcome the community to join us in adding to the framework and building plugins.

Overview

Magpie Architecture

Magpie relies on plugins for all its integration capabilities. They are the core of the framework and key to integration with both cloud providers and downstream processing and storage.

Magpie is essentially a series of layers separated by FIFOs.

Depending on the configuration, these FIFOs are either 1) Java queues (in the default configuration) or 2) Kafka queues. Using Kafka queues allows Magpie to run in a distributed and highly scalable fashion where each layer may exist on separate compute instances.

Building Magpie

Clone and build Magpie

git clone [email protected]:openraven/magpie.git
cd magpie
mvn clean package install && mvn --projects magpie-cli assembly:single

The distribution zip file will be located in magpie-cli/target/magpie-<version>.zip

Alternatively you can download the latest snapshot build by going to Action->(choose latest) and click the magpie-cli artifact, which will download a zip distribution.

Running Magpie

Java 11 is a prerequisite and must be installed to run Magpie.

Out of the box Magpie supports AWS for the cloud provider and outputs discovery data to stdout in JSON format. The AWS plugin utilizes the AWS Java SDK and will search for credentials as described in Using Credentials.

Assuming you have read credentials set up, you can start discovery by running:

./magpie

Configuration

Magpie allows for complex configurations to be enabled via the YAML-based config file. This file has 3 primary sections:

Layers: each of which contain 1 or more plugins and are surrounded by at least 1 FIFO
FIFOs: which are either local (in-process Java queues) or Kafka queues
Plugins: Each running plugin must be explictly. A plugin-specific configuration object may reside in the config subsection.

The simplest Magpie configuration is shown below. This configuration enables AWS discovery with a JSON output to stdout. To write to a file simply redirect the output:

./magpie > output.json

Log messages are printed to stderr and will still show up as console output.

The simplest configuration:

layers:
  enumerate:
    type: origin
    queue: default
    plugins:
      - magpie.aws.discovery
  output:
    type: terminal
    dequeue: default
    plugins:
      - magpie.json
fifos:
  default:
    type: local
plugins:
  magpie.aws.discovery:
    enabled: true
    config:
  magpie.json:
    enabled: true
    config:
  magpie.persist:
    enabled: false
    config:
      hostname: localhost
      port: 5432
      databaseName: db_name
      user: postgres
      password: postgres

Overriding config.yaml

It is possible to override most configuration values via environmental variables. This is most useful as an easy way to script a Magpie instance on a one-per-aws-service basis. To override configuration values, set an environmental variable named MAGPIE_CONFIG and with a specially formed JSON object or array. For example, to perform an S3 only scan using with the default configuration:

> MAGPIE_CONFIG="{'/plugins/magpie.aws.discovery/config/services': ['s3']}" ./magpie

The value of MAGPIE_CONFIG must be a JSON object where the key is a JSON Pointer and the value is legal JSON which should be inserted into the location referenced by the pointer.

In the case where multiple overrides are required you may instead use an array of the above formatted objects as such:

> MAGPIE_CONFIG="[{'/plugins/magpie.aws.discovery/enabled', false }, {'/plugins/magpie.aws.discovery/config/services': ['s3']}]" ./magpie

Multiple Overrides

If you have multiple values to set it may be easier to set multiple override variables instead of attempting to fit it in a single env var. Magpie will accept any and all environmental variables that match the regex MAGPIE_CONFIG.*. They will be applied in Java's natural String ordering (lexicographic). For example:

> export MAGPIE_CONFIG_1="[...]"
> export MAGPIE_CONFIG_2="[...]"
> ./magpie

Both variables will be applied, if any duplicate JSON Pointers are provided the last one applied will win.

Running via Docker

Builds on the main branch are automatically uploaded to quay.io under the latest tag. See https://quay.io/repository/openraven/magpie for all available tags. Once a stable public release is made this will also be available there. The Docker image uses the default config and provides no AWS credentials.

Credentials can be added at runtime via volume mapping or passing environmental variables into the container.
Configuration overrides can be done via environmental variable.

For example: to pass environmental variables for both credentials and configuration:

docker run -a stdout -a stderr \
--env MAGPIE_CONFIG="{'/plugins/magpie.aws.discovery/config/services': ['s3']}" \
-e AWS_ACCESS_KEY_ID -e AWS_SECRET_ACCESS_KEY -e AWS_SESSION_TOKEN \
quay.io/openraven/magpie:latest

The two -a arguments map both stdout and stderr to your local terminals, so you can redirect output as you would with a local Mapgie execution.

Plugins

Community Contributed Plugins

If you've written a plugin you'd like listed please create a Pull Request with it listed here.

Cloud Provider Status

AWS

Magpie supports AWS as a core plugin out of the box. Checked boxes are complete and available today, the unchecked are on the roadmap for completion. We have already built the code for all services in the list, but need to port them over from a previous framework.

Per region discovery

By default the Magpie AWS Plugin will run discovery in all regions. To narrow down discovery to a subset of regions edit the plugins.magpie.aws.discovery.config.regions value to an array of desired region names, for example:

plugins:
  magpie.aws.discovery:
    enabled: true
    config:
      regions:
        - us-east-2
        - us-east-1

Saving data to PostgreSQL

By default, Magpie prints all discovered resources to standard out in JSON format. It's possible to modify this behaviour by changing the default configuration. The Magpie Peristence plugin comes bundled with Magpie but is in the disabled state by default. To enable it look at the following lines in the config file (config.yaml). set enabled: true and then modify the login credentials as needed. Magpie will create all required tables at startup.

magpie.persist:
    enabled: false
    config:
        hostname: localhost
        port: 5432
        databaseName: db_name
        user: postgres
        password: postgres

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