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BUSINESS POSTURE

Camunda BPM is a platform for workflow and decision automation. It's used by businesses to automate core processes, improving efficiency and visibility. Based on the GitHub repository, here's a breakdown of the business posture:

Priorities and Goals:

  • Provide a robust and reliable platform for workflow and decision automation.
  • Offer a flexible and extensible platform that can be adapted to various business needs.
  • Enable developers to easily design, implement, and manage workflows and decisions.
  • Ensure scalability and performance to handle large volumes of transactions.
  • Provide tools for monitoring and analyzing workflow execution.
  • Maintain an active open-source community and ecosystem.

Business Risks:

  • Data breaches or unauthorized access to sensitive business process data.
  • System downtime or performance degradation impacting critical business operations.
  • Incorrect or flawed workflow definitions leading to business errors or compliance violations.
  • Lack of auditability and traceability of workflow executions.
  • Vulnerabilities in the platform or its dependencies that could be exploited by attackers.
  • Difficulty in integrating with existing enterprise systems.
  • Inability to scale to meet growing business demands.

SECURITY POSTURE

Existing Security Controls:

  • security control: Authentication mechanisms for users and API clients (e.g., HTTP Basic, OAuth 2.0). Described in Camunda documentation and implementation.
  • security control: Authorization framework to control access to resources and operations based on roles and permissions. Described in Camunda documentation and implementation.
  • security control: Encryption of data in transit using TLS/SSL. Described in Camunda documentation and implementation.
  • security control: Input validation to prevent injection attacks (e.g., Cross-Site Scripting, SQL Injection). Described in Camunda documentation and implementation.
  • security control: Audit logging to track user actions and system events. Described in Camunda documentation and implementation.
  • security control: Regular security updates and patches to address vulnerabilities. Described in Camunda documentation and implementation.
  • security control: Secure configuration guidelines and best practices. Described in Camunda documentation.
  • security control: Support for external identity providers (e.g., LDAP, Active Directory). Described in Camunda documentation and implementation.

Accepted Risks:

  • accepted risk: The platform relies on the security of the underlying infrastructure (e.g., operating system, database, network).
  • accepted risk: The security of custom scripts and extensions developed by users is the responsibility of the users.
  • accepted risk: The platform may be vulnerable to denial-of-service attacks if not properly configured and protected.

Recommended Security Controls:

  • Implement a robust secrets management solution to securely store and manage sensitive configuration data (e.g., API keys, passwords).
  • Integrate with a centralized security information and event management (SIEM) system for real-time threat detection and response.
  • Implement network segmentation to isolate the platform from other systems and limit the impact of potential breaches.
  • Conduct regular penetration testing and vulnerability assessments to identify and address security weaknesses.
  • Implement a web application firewall (WAF) to protect against common web-based attacks.

Security Requirements:

  • Authentication:
    • Support for multi-factor authentication (MFA).
    • Strong password policies and enforcement.
    • Secure session management with appropriate timeouts.
    • Protection against brute-force attacks.
  • Authorization:
    • Fine-grained access control based on roles and permissions.
    • Principle of least privilege.
    • Regular review and auditing of user permissions.
  • Input Validation:
    • Strict validation of all user inputs to prevent injection attacks.
    • Encoding of output data to prevent cross-site scripting (XSS).
    • Protection against other common web vulnerabilities (e.g., CSRF, SQL Injection).
  • Cryptography:
    • Use of strong, industry-standard cryptographic algorithms.
    • Secure key management practices.
    • Encryption of sensitive data at rest.
  • Auditing:
    • Comprehensive audit logging of all security-relevant events.
    • Secure storage and protection of audit logs.
    • Regular review and analysis of audit logs.

DESIGN

C4 CONTEXT

graph LR
    User("User")
    CamundaBPMPlatform("Camunda BPM Platform")
    ExternalSystems("External Systems")
    Databases("Databases")
    User -- "Uses" --> CamundaBPMPlatform
    CamundaBPMPlatform -- "Interacts with" --> ExternalSystems
    CamundaBPMPlatform -- "Reads/Writes" --> Databases
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Element Descriptions:

  • Element:

    • Name: User
    • Type: Person
    • Description: A human user who interacts with the Camunda BPM Platform.
    • Responsibilities: Designing, deploying, managing, and executing workflows and decisions.
    • Security controls: Authentication, Authorization, MFA.

  • Element:

    • Name: Camunda BPM Platform
    • Type: Software System
    • Description: The core system for workflow and decision automation.
    • Responsibilities: Executing workflows and decisions, managing process instances, providing APIs for interaction.
    • Security controls: Authentication, Authorization, Input Validation, Encryption, Audit Logging.

  • Element:

    • Name: External Systems
    • Type: Software System
    • Description: Other systems that the Camunda BPM Platform interacts with (e.g., CRM, ERP, microservices).
    • Responsibilities: Providing data or services to the Camunda BPM Platform, receiving data or requests from the Camunda BPM Platform.
    • Security controls: Secure communication channels (e.g., TLS/SSL), API authentication and authorization.

  • Element:

    • Name: Databases
    • Type: Software System
    • Description: Databases used by the Camunda BPM Platform to store process definitions, instance data, and other information.
    • Responsibilities: Persisting data for the Camunda BPM Platform.
    • Security controls: Database security best practices, encryption at rest, access control.

C4 CONTAINER

graph LR
    User("User")
    CamundaEngine("Camunda Engine")
    RESTAPI("REST API")
    WebApps("Web Apps\n(Cockpit, Tasklist, Admin)")
    ExternalSystems("External Systems")
    Databases("Databases")

    User -- "Uses" --> WebApps
    User -- "Uses" --> RESTAPI
    WebApps -- "Uses" --> RESTAPI
    RESTAPI -- "Uses" --> CamundaEngine
    CamundaEngine -- "Reads/Writes" --> Databases
    CamundaEngine -- "Interacts with" --> ExternalSystems
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Element Descriptions:

  • Element:

    • Name: User
    • Type: Person
    • Description: A human user who interacts with the Camunda BPM Platform.
    • Responsibilities: Designing, deploying, managing, and executing workflows and decisions.
    • Security controls: Authentication, Authorization, MFA.

  • Element:

    • Name: Camunda Engine
    • Type: Container
    • Description: The core component responsible for executing BPMN 2.0 workflows and DMN 1.3 decisions.
    • Responsibilities: Parsing process definitions, managing process instances, executing tasks, handling events.
    • Security controls: Input validation, secure execution of scripts and expressions.

  • Element:

    • Name: REST API
    • Type: Container
    • Description: Provides a RESTful interface for interacting with the Camunda Engine.
    • Responsibilities: Exposing engine functionality to external clients, handling API requests, managing authentication and authorization.
    • Security controls: Authentication, Authorization, Input Validation, Rate Limiting.

  • Element:

    • Name: Web Apps (Cockpit, Tasklist, Admin)
    • Type: Container
    • Description: Web-based applications for monitoring, managing, and interacting with workflows and tasks.
    • Responsibilities: Providing user interfaces for process monitoring, task management, and system administration.
    • Security controls: Authentication, Authorization, Input Validation, XSS Protection, CSRF Protection.

  • Element:

    • Name: External Systems
    • Type: Software System
    • Description: Other systems that the Camunda BPM Platform interacts with.
    • Responsibilities: Providing data or services, receiving data or requests.
    • Security controls: Secure communication channels, API authentication and authorization.

  • Element:

    • Name: Databases
    • Type: Container
    • Description: Databases used to store process definitions, instance data, and other information.
    • Responsibilities: Persisting data.
    • Security controls: Database security best practices, encryption at rest, access control.

DEPLOYMENT

Camunda BPM Platform can be deployed in various ways, including:

  1. Embedded Engine: The Camunda Engine can be embedded within a custom Java application.
  2. Standalone Server: The Camunda Engine can be deployed as a standalone server (e.g., using Tomcat, WildFly, or Spring Boot).
  3. Docker Container: The Camunda Engine can be deployed as a Docker container.
  4. Kubernetes: The Camunda Engine can be deployed to a Kubernetes cluster.

Chosen Deployment Solution (Kubernetes):

graph LR
    Internet("Internet")
    Ingress("Ingress Controller")
    Service("Camunda Service")
    Pod1("Camunda Pod 1")
    Pod2("Camunda Pod 2")
    Pod3("Camunda Pod 3")
    Database("Database")
    Internet -- "HTTPS" --> Ingress
    Ingress -- "HTTP" --> Service
    Service -- "Round Robin" --> Pod1
    Service -- "Round Robin" --> Pod2
    Service -- "Round Robin" --> Pod3
    Pod1 -- "JDBC" --> Database
    Pod2 -- "JDBC" --> Database
    Pod3 -- "JDBC" --> Database
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Element Descriptions:

  • Element:

    • Name: Internet
    • Type: Infrastructure Node
    • Description: The public internet.
    • Responsibilities: Providing access to the Camunda BPM Platform.
    • Security controls: Firewall, Intrusion Detection/Prevention System.

  • Element:

    • Name: Ingress Controller
    • Type: Infrastructure Node
    • Description: Manages external access to the services in the Kubernetes cluster.
    • Responsibilities: Routing incoming traffic to the appropriate services.
    • Security controls: TLS termination, SSL certificates, access control rules.

  • Element:

    • Name: Camunda Service
    • Type: Kubernetes Service
    • Description: A Kubernetes Service that exposes the Camunda BPM Platform pods.
    • Responsibilities: Providing a stable IP address and DNS name for accessing the Camunda BPM Platform.
    • Security controls: Network policies.

  • Element:

    • Name: Camunda Pod 1, Camunda Pod 2, Camunda Pod 3
    • Type: Kubernetes Pod
    • Description: Pods running instances of the Camunda BPM Platform.
    • Responsibilities: Executing workflows and decisions.
    • Security controls: Container security best practices, resource limits, security context.

  • Element:

    • Name: Database
    • Type: Infrastructure Node
    • Description: The database used by the Camunda BPM Platform.
    • Responsibilities: Persisting data.
    • Security controls: Database security best practices, encryption at rest, access control, firewall.

BUILD

The Camunda BPM Platform build process involves multiple steps, from source code to deployable artifacts. The process is automated using Maven and involves several security checks.

graph LR
    Developer("Developer") --> GitHub("GitHub Repository")
    GitHub --> GitHubActions("GitHub Actions")
    GitHubActions -- "Build & Test" --> Maven("Maven")
    Maven -- "SAST" --> FindBugs("FindBugs")
    Maven -- "Dependency Check" --> OWASPDependencyCheck("OWASP Dependency-Check")
    Maven -- "Unit & Integration Tests" --> JUnit("JUnit")
    Maven -- "Package" --> Artifacts("Artifacts\n(JAR, WAR, Docker Image)")
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Build Process Description:

  1. Developer commits code to the GitHub repository.
  2. GitHub Actions triggers a build workflow.
  3. Maven is used to manage dependencies, compile code, run tests, and package the application.
  4. Security checks are performed during the build process:
    • Static Application Security Testing (SAST) using FindBugs to identify potential vulnerabilities in the code.
    • Dependency checking using OWASP Dependency-Check to identify known vulnerabilities in third-party libraries.
    • Unit and integration tests using JUnit to ensure code quality and functionality.
  5. Build artifacts (JAR, WAR, Docker Image) are created.

Security Controls in Build Process:

  • security control: SAST (FindBugs).
  • security control: Dependency checking (OWASP Dependency-Check).
  • security control: Automated build and test process (GitHub Actions, Maven).
  • security control: Code reviews and pull requests.

RISK ASSESSMENT

Critical Business Processes:

  • Workflow and decision automation: The core business process is the automation of workflows and decisions, which directly impacts operational efficiency and business outcomes.
  • Process instance management: Managing the lifecycle of process instances is critical for ensuring that workflows are executed correctly and completely.
  • Task management: Assigning and managing tasks to users is essential for ensuring that work is completed in a timely manner.
  • Reporting and analytics: Monitoring and analyzing workflow execution data is important for identifying bottlenecks, optimizing processes, and making informed business decisions.

Data Sensitivity:

  • Process definitions: Contain the logic of business processes, which may be confidential or proprietary. Sensitivity: Medium to High.
  • Process instance data: Includes data related to specific workflow executions, which may contain sensitive business information or personal data. Sensitivity: Medium to High.
  • User data: Includes information about users of the platform, such as usernames, roles, and permissions. Sensitivity: Medium.
  • Audit logs: Contain a record of user actions and system events, which may be sensitive from a security and compliance perspective. Sensitivity: Medium.

QUESTIONS & ASSUMPTIONS

Questions:

  • What are the specific compliance requirements (e.g., GDPR, HIPAA, PCI DSS) that the platform must adhere to?
  • What are the expected performance and scalability requirements for the platform?
  • What are the existing security policies and procedures of the organization?
  • What is the level of security expertise within the development and operations teams?
  • What is the budget allocated for security controls and tools?

Assumptions:

  • BUSINESS POSTURE: The organization prioritizes the security and reliability of the Camunda BPM Platform.
  • SECURITY POSTURE: The organization has a basic understanding of security best practices and is willing to invest in security measures.
  • DESIGN: The platform will be deployed in a secure environment with appropriate network segmentation and access controls. The underlying infrastructure (operating system, database, network) is secured according to industry best practices.