- Business priorities and goals:
- ownCloud core aims to provide a self-hosted file sync and share platform.
- It prioritizes user data privacy and control by allowing users to host their data on their own infrastructure.
- It aims to offer a secure and reliable platform for individuals and organizations to collaborate on files.
- Key business goals include maintaining a robust and feature-rich open-source platform, fostering a strong community, and offering enterprise-grade capabilities through its ecosystem.
- Most important business risks:
- Data breaches and data loss due to security vulnerabilities in the platform.
- Reputational damage and loss of user trust if security incidents occur.
- Compliance risks related to data privacy regulations (e.g., GDPR, HIPAA) if the platform is not secure and compliant.
- Availability and reliability issues impacting business continuity for users relying on ownCloud core.
- Difficulty in attracting and retaining users if the platform is perceived as less secure or less feature-rich compared to competitors.
- Existing security controls:
- security control: Regular security audits and penetration testing (location: ownCloud security policy and practices).
- security control: Secure software development lifecycle (SSDLC) incorporating security considerations throughout the development process (location: ownCloud development practices).
- security control: Input validation and sanitization to prevent injection attacks (location: within application code).
- security control: Output encoding to prevent cross-site scripting (XSS) attacks (location: within application code).
- security control: Authentication and authorization mechanisms to control access to data and functionalities (location: within application code, configuration files).
- security control: Encryption of data in transit using HTTPS (location: web server configuration).
- security control: Encryption of data at rest (optional, configurable) (location: storage configuration, ownCloud configuration).
- security control: Security headers to enhance web application security (e.g., Content Security Policy, HTTP Strict Transport Security) (location: web server configuration, application code).
- security control: Access control lists (ACLs) for file and folder permissions (location: ownCloud core application logic and database).
- security control: Logging and monitoring of security-related events (location: ownCloud logging system, server logs).
- security control: Vulnerability scanning of dependencies and code (location: likely part of CI/CD pipeline, not explicitly documented in repository).
- security control: Security updates and patch management process (location: ownCloud release and update process).
- Accepted risks:
- accepted risk: Potential vulnerabilities in third-party dependencies. Mitigation: Regular dependency updates and vulnerability scanning.
- accepted risk: Misconfiguration by administrators leading to security weaknesses. Mitigation: Clear documentation and security hardening guides.
- accepted risk: Social engineering attacks targeting users. Mitigation: User security awareness training and strong password policies.
- accepted risk: Zero-day vulnerabilities. Mitigation: Proactive security monitoring, incident response plan, and rapid patching.
- Recommended security controls:
- security control: Implement static application security testing (SAST) in the CI/CD pipeline.
- security control: Implement dynamic application security testing (DAST) in the CI/CD pipeline or staging environment.
- security control: Implement software composition analysis (SCA) to manage and monitor open-source dependencies.
- security control: Implement a security incident and event management (SIEM) system for centralized security monitoring and alerting.
- security control: Implement multi-factor authentication (MFA) for user accounts.
- security control: Regularly review and update security configurations and policies.
- security control: Implement rate limiting and защита against brute-force attacks.
- Security requirements:
- Authentication:
- requirement: Secure authentication mechanism to verify user identity.
- requirement: Support for strong password policies and password complexity requirements.
- requirement: Option for multi-factor authentication (MFA).
- requirement: Secure session management to prevent session hijacking.
- Authorization:
- requirement: Role-based access control (RBAC) to manage user permissions.
- requirement: Fine-grained access control to files and folders based on user roles and permissions.
- requirement: Secure sharing mechanisms with granular permissions (e.g., read-only, read-write, share).
- Input validation:
- requirement: Validate all user inputs to prevent injection attacks (e.g., SQL injection, cross-site scripting).
- requirement: Sanitize user inputs before storing them in the database or displaying them to other users.
- requirement: Implement input validation on both client-side and server-side.
- Cryptography:
- requirement: Use HTTPS for all communication to encrypt data in transit.
- requirement: Option to encrypt data at rest using strong encryption algorithms.
- requirement: Securely manage cryptographic keys.
- requirement: Use appropriate hashing algorithms for password storage.
- Authentication:
flowchart LR
subgraph "ownCloud Ecosystem"
C(["ownCloud Core\n(File Sync & Share Platform)"])
end
U[/"Users\n(Web browser, Desktop client, Mobile client)/"] --> C
A[/"Administrators\n(System administrators)/"] --> C
S[/"Storage System\n(File storage backend)\n(e.g., Local filesystem, Object storage)/"] --> C
DB[/"Database System\n(Metadata storage)\n(e.g., MySQL, PostgreSQL, SQLite)/"] --> C
E[/"External Services\n(Optional integrations)\n(e.g., LDAP/AD, Mail server, Collabora Online, OnlyOffice)/"] --> C
style C fill:#f9f,stroke:#333,stroke-width:2px
- Context Diagram Elements:
-
- Name: Users
- Type: Person
- Description: End-users who access and interact with ownCloud core to sync and share files. They can use web browsers, desktop clients, or mobile clients.
- Responsibilities: Access and manage their files, collaborate with other users, and configure their user settings.
- Security controls: Authentication (username/password, MFA), session management, authorization based on roles and permissions, client-side input validation.
-
- Name: Administrators
- Type: Person
- Description: System administrators responsible for installing, configuring, and maintaining ownCloud core.
- Responsibilities: Server setup, configuration, user management, security hardening, monitoring, and updates.
- Security controls: Strong administrator credentials, access control to server infrastructure, secure configuration management, audit logging of administrative actions.
-
- Name: ownCloud Core
- Type: Software System
- Description: The core file sync and share platform. It provides web interface, API, and backend services for file management, user management, sharing, and collaboration.
- Responsibilities: File storage and management, user authentication and authorization, sharing and collaboration features, API for clients, security controls implementation.
- Security controls: Input validation, output encoding, authentication, authorization, encryption in transit (HTTPS), encryption at rest (optional), access control lists, security headers, logging, vulnerability scanning, security updates.
-
- Name: Storage System
- Type: Software System / Infrastructure
- Description: The backend storage system where user files are physically stored. Can be local filesystem, object storage (e.g., S3, Swift), or other storage solutions.
- Responsibilities: Persistent storage of user files, data integrity, data availability, performance.
- Security controls: Access control to storage backend, encryption at rest (if supported by storage system), data backup and recovery, physical security of storage infrastructure.
-
- Name: Database System
- Type: Software System
- Description: Database system used to store metadata about users, files, shares, and system configuration. Examples include MySQL, PostgreSQL, SQLite.
- Responsibilities: Metadata persistence, data integrity, efficient data retrieval, database security.
- Security controls: Database access control, database encryption (if supported), regular backups, database hardening, SQL injection prevention in ownCloud core.
-
- Name: External Services
- Type: Software System
- Description: Optional external services that can be integrated with ownCloud core to extend its functionality. Examples include LDAP/AD for user directory integration, mail server for notifications, Collabora Online/OnlyOffice for online document editing.
- Responsibilities: Provide additional functionalities, integration with existing IT infrastructure.
- Security controls: Secure integration with external services, secure authentication and authorization for external service access, data exchange security, security of external services themselves.
-
flowchart LR
subgraph "ownCloud Core System"
subgraph "Web Server Container"
WS(["Web Server\n(e.g., Apache, Nginx)"])
PHP(["PHP Application\n(ownCloud Core Code)"])
end
subgraph "Database Container"
DB(["Database Server\n(e.g., MySQL, PostgreSQL)"])
end
subgraph "Storage Container"
FS(["File Storage\n(Local Filesystem or Object Storage)"])
end
end
U[/"Users\n(Web Browser, Clients)/"] --> WS
A[/"Administrators\n(System administrators)/"] --> WS
WS --> PHP
PHP --> DB
PHP --> FS
PHP --> E[/"External Services\n(Optional)/"]
style WS fill:#fbb,stroke:#333,stroke-width:2px
style PHP fill:#fbb,stroke:#333,stroke-width:2px
style DB fill:#ccf,stroke:#333,stroke-width:2px
style FS fill:#ddf,stroke:#333,stroke-width:2px
- Container Diagram Elements:
-
- Name: Web Server Container
- Type: Container - Web Server
- Description: Container hosting the web server (e.g., Apache, Nginx) that handles HTTP requests and serves the ownCloud application. It acts as the entry point for user interactions and API requests.
- Responsibilities: HTTP request handling, TLS termination (HTTPS), reverse proxying, serving static content, routing requests to PHP application.
- Security controls: Web server hardening, TLS configuration, security headers, access control to web server configuration, DDoS protection.
-
- Name: PHP Application Container
- Type: Container - Application Server
- Description: Container running the PHP application code of ownCloud core. This is where the core application logic, business logic, and security controls are implemented.
- Responsibilities: Handling application logic, user authentication and authorization, file management, sharing logic, API processing, database interactions, storage interactions, integration with external services.
- Security controls: Input validation, output encoding, authentication and authorization logic, session management, secure API design, vulnerability scanning, secure coding practices, access control to application configuration.
-
- Name: Database Container
- Type: Container - Database
- Description: Container running the database server (e.g., MySQL, PostgreSQL) used by ownCloud core to store metadata.
- Responsibilities: Metadata storage, data persistence, data integrity, database query processing.
- Security controls: Database access control, database hardening, database encryption (if supported), regular backups, SQL injection prevention in PHP application, monitoring database activity.
-
- Name: File Storage Container
- Type: Container - File Storage
- Description: Represents the file storage backend, which can be a local filesystem or an object storage system. It stores the actual user files.
- Responsibilities: Persistent storage of user files, file system operations, data availability, storage performance.
- Security controls: Access control to file storage, encryption at rest (if supported by storage system), data backup and recovery, storage system hardening, physical security of storage infrastructure.
-
Deployment Solution: On-Premise Deployment on Linux Server
flowchart LR
subgraph "On-Premise Server"
subgraph "Operating System\n(Linux)"
subgraph "Web Server\n(Apache/Nginx)"
WS_Instance(["Web Server Instance"])
PHP_Instance(["PHP Application Instance"])
end
subgraph "Database Server\n(MySQL/PostgreSQL)"
DB_Instance(["Database Server Instance"])
end
subgraph "File Storage"
FS_Volume(["File Storage Volume"])
end
end
end
Internet[/"Internet/"] --> WS_Instance
WS_Instance --> PHP_Instance
PHP_Instance --> DB_Instance
PHP_Instance --> FS_Volume
style WS_Instance fill:#fbb,stroke:#333,stroke-width:2px
style PHP_Instance fill:#fbb,stroke:#333,stroke-width:2px
style DB_Instance fill:#ccf,stroke:#333,stroke-width:2px
style FS_Volume fill:#ddf,stroke:#333,stroke-width:2px
- Deployment Diagram Elements:
-
- Name: On-Premise Server
- Type: Infrastructure - Server
- Description: Physical or virtual server located in the organization's data center or server room.
- Responsibilities: Hosting all components of ownCloud core, providing compute resources, network connectivity, and physical security.
- Security controls: Physical security of server location, operating system hardening, network security controls (firewall, intrusion detection), server access control, regular security patching.
-
- Name: Operating System (Linux)
- Type: Software - Operating System
- Description: Linux operating system installed on the server, providing the base environment for running ownCloud core components.
- Responsibilities: Resource management, process isolation, system security, providing system services.
- Security controls: OS hardening, access control, security updates and patching, audit logging, intrusion detection system (HIDS).
-
- Name: Web Server Instance
- Type: Software Instance - Web Server
- Description: Instance of the web server software (Apache or Nginx) running on the server.
- Responsibilities: Handling HTTP requests, TLS termination, serving static content, routing requests to PHP application.
- Security controls: Web server hardening, TLS configuration, security headers, access control to configuration files, web application firewall (WAF).
-
- Name: PHP Application Instance
- Type: Software Instance - Application Server
- Description: Instance of the PHP application (ownCloud core code) running on the web server.
- Responsibilities: Executing application logic, handling user requests, interacting with database and storage, implementing security controls.
- Security controls: Application-level security controls (input validation, authorization, etc.), secure coding practices, vulnerability scanning, application firewall.
-
- Name: Database Server Instance
- Type: Software Instance - Database
- Description: Instance of the database server (MySQL or PostgreSQL) running on the server.
- Responsibilities: Storing and managing metadata, providing database services to the PHP application.
- Security controls: Database access control, database hardening, database encryption (if supported), regular backups, database activity monitoring.
-
- Name: File Storage Volume
- Type: Infrastructure - Storage Volume
- Description: Volume or partition on the server's storage system where user files are stored.
- Responsibilities: Persistent storage of user files, file system operations.
- Security controls: File system permissions, encryption at rest (if supported by underlying storage), data backup and recovery, physical security of storage media.
-
flowchart LR
Developer[/"Developer\n(Code Changes)/"] --> VCS[/"Version Control System\n(e.g., Git, GitHub)/"]
VCS --> BuildServer[/"Build Server\n(e.g., GitHub Actions, Jenkins)/"]
BuildServer --> SAST[/"Static Application\nSecurity Testing (SAST)/"]
BuildServer --> SCA[/"Software Composition\nAnalysis (SCA)/"]
BuildServer --> Linter[/"Code Linter\n& Code Style Checks/"]
SAST --> BuildServer
SCA --> BuildServer
Linter --> BuildServer
BuildServer --> ArtifactRepo[/"Artifact Repository\n(e.g., Package Registry)/"]
ArtifactRepo --> DeploymentEnv[/"Deployment Environment\n(e.g., Test, Staging, Production)/"]
style BuildServer fill:#bee,stroke:#333,stroke-width:2px
style ArtifactRepo fill:#dee,stroke:#333,stroke-width:2px
- Build Process Elements:
-
- Name: Developer
- Type: Person
- Description: Software developers who write and modify the ownCloud core code.
- Responsibilities: Writing secure code, following secure coding practices, committing code changes to version control.
- Security controls: Secure development environment, code review process, security awareness training.
-
- Name: Version Control System (VCS)
- Type: Software System
- Description: System like Git and GitHub used to manage source code, track changes, and collaborate on development.
- Responsibilities: Source code management, version control, code collaboration, access control to source code.
- Security controls: Access control to repository, branch protection, commit signing, audit logging of code changes.
-
- Name: Build Server
- Type: Software System
- Description: Automated build server (e.g., GitHub Actions, Jenkins) that compiles code, runs tests, and performs security checks.
- Responsibilities: Automated build process, compilation, testing, security scanning, artifact generation, CI/CD pipeline orchestration.
- Security controls: Secure build environment, access control to build server, build process hardening, secure configuration of CI/CD pipeline, audit logging of build activities.
-
- Name: Static Application Security Testing (SAST)
- Type: Software Tool
- Description: SAST tools that analyze source code for potential security vulnerabilities without executing the code.
- Responsibilities: Identify potential security flaws in code, provide feedback to developers, improve code security.
- Security controls: Regularly updated vulnerability rules, accurate vulnerability detection, integration into CI/CD pipeline.
-
- Name: Software Composition Analysis (SCA)
- Type: Software Tool
- Description: SCA tools that analyze project dependencies (libraries, frameworks) for known vulnerabilities and license compliance issues.
- Responsibilities: Identify vulnerable dependencies, track dependency versions, manage open-source risks.
- Security controls: Regularly updated vulnerability databases, accurate dependency scanning, integration into CI/CD pipeline.
-
- Name: Code Linter & Code Style Checks
- Type: Software Tool
- Description: Tools that analyze code for style violations, potential bugs, and code quality issues. While not directly security focused, they improve code maintainability and reduce potential for subtle errors that could lead to security issues.
- Responsibilities: Enforce code quality standards, identify potential bugs, improve code maintainability.
- Security controls: Configuration to detect potential security-related code patterns, integration into CI/CD pipeline.
-
- Name: Artifact Repository
- Type: Software System
- Description: Repository (e.g., package registry, file storage) where build artifacts (e.g., compiled code, packages, Docker images) are stored.
- Responsibilities: Secure storage of build artifacts, versioning, access control to artifacts, artifact integrity.
- Security controls: Access control to artifact repository, artifact integrity checks (e.g., checksums), vulnerability scanning of artifacts, secure artifact storage.
-
- Name: Deployment Environment
- Type: Environment
- Description: Target environments where ownCloud core is deployed (e.g., test, staging, production).
- Responsibilities: Running ownCloud core application, providing runtime environment, hosting application infrastructure.
- Security controls: Environment hardening, access control, network security, runtime security monitoring, security configurations.
-
- Critical business processes:
- File storage and access: Ensuring users can reliably store and access their files.
- File sharing and collaboration: Enabling users to securely share and collaborate on files.
- User authentication and authorization: Controlling access to the platform and data.
- Data synchronization: Keeping files synchronized across devices.
- Data sensitivity:
- User files: Sensitivity varies depending on the user and organization. Can range from public documents to highly confidential business data, personal information, financial records, etc. Sensitivity is generally considered high due to the potential for storing diverse and sensitive data.
- User credentials: Highly sensitive. Compromise can lead to unauthorized access to user data.
- Metadata: Can contain sensitive information about file ownership, sharing, and access patterns. Sensitivity is medium to high depending on the context.
- System logs: Can contain sensitive information about system activity and potential security incidents. Sensitivity is medium to high.
- Questions:
- What are the specific compliance requirements for ownCloud core deployments (e.g., GDPR, HIPAA)?
- What is the expected user base size and data volume for a typical ownCloud core deployment?
- Are there any specific external services that are commonly integrated with ownCloud core?
- What is the current level of security maturity within the ownCloud core development process?
- What are the existing security monitoring and incident response capabilities for ownCloud core deployments?
- Assumptions:
- BUSINESS POSTURE: Assumed that data privacy and security are high priorities for ownCloud core users and the project itself.
- SECURITY POSTURE: Assumed that basic security controls like input validation, authentication, authorization, and HTTPS are already implemented. Assumed that ownCloud core follows a secure software development lifecycle to some extent.
- DESIGN: Assumed a typical on-premise deployment scenario for the deployment diagram. Assumed a standard build process involving VCS, build server, and artifact repository. Assumed common web server (Apache/Nginx) and database (MySQL/PostgreSQL) technologies are used.