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Threat Model Analysis for filamentphp/filament

Threat: Unauthorized Resource Access via Policy Bypass

  • Description: An authenticated attacker with limited privileges crafts a request that bypasses Filament's policy checks for a specific Resource. This involves manipulating URL parameters, form data, or exploiting logical flaws in custom policy implementations specific to how Filament integrates with Laravel's policies. The attacker gains access to records or actions (create, update, delete) they are not authorized for.
  • Impact: Unauthorized data access, modification, or deletion. Loss of data confidentiality, integrity, and potentially availability. Could lead to data breaches or system compromise.
  • Filament Component Affected: Filament Resources, Policies (specifically the methods within policy classes like viewAny, view, create, update, delete, restore, forceDelete), Authorization logic as implemented within Filament.
  • Risk Severity: High to Critical (depending on the sensitivity of the data).
  • Mitigation Strategies:
    • Thorough Policy Implementation: Ensure all relevant policy methods (viewAny, view, create, update, delete, etc.) are implemented and correctly check user permissions within the context of Filament's resource management. Don't rely on default returns; explicitly define the logic.
    • Input Validation: Validate all inputs, even those seemingly controlled by Filament, to prevent manipulation. This includes URL parameters and hidden form fields, specifically within Filament's request handling.
    • Testing: Write comprehensive tests (unit and integration) specifically targeting policy enforcement within Filament. Try to bypass policies with different user roles and permissions, focusing on Filament's UI and API.
    • Least Privilege: Adhere to the principle of least privilege. Grant users only the minimum necessary permissions within the Filament admin panel.
    • Regular Audits: Regularly review and audit policy implementations for logical flaws and potential bypasses, paying close attention to how they interact with Filament's features.

Threat: Action Manipulation - Unauthorized Action Execution

  • Description: An attacker, possibly with limited access, triggers a Filament Action they are not authorized to use. This involves manipulating the request to bypass client-side checks or exploiting server-side vulnerabilities in the Action's logic as implemented within Filament. The attacker might trigger a "Delete All Users" action without permissions, exploiting how Filament handles action execution.
  • Impact: Unauthorized execution of actions, potentially leading to data loss, system disruption, or other unintended consequences. The impact is highly dependent on the specific Filament Action.
  • Filament Component Affected: Filament Actions (both standalone and those within Resources), Authorization logic within Filament's Action handling.
  • Risk Severity: High to Critical (depending on the action's functionality).
  • Mitigation Strategies:
    • Server-Side Authorization: Implement robust server-side authorization checks within the Filament Action's handle method (or equivalent). Do not rely solely on Filament's client-side visibility controls. This authorization must be specific to Filament's action execution context.
    • Input Validation: Validate any input parameters passed to the Filament Action to prevent manipulation, specifically within Filament's request processing for actions.
    • Contextual Checks: Consider the context in which the Filament Action is being executed. Check if the user has permission to perform the action on the specific record being targeted, within Filament's data handling.
    • Testing: Write tests that specifically attempt to trigger unauthorized Filament Actions, focusing on Filament's API and UI for actions.
    • Rate Limiting: Implement rate limiting on sensitive Filament Actions to prevent abuse, using Filament's integration with Laravel's rate limiting features.

Threat: Unprotected Custom Pages

  • Description: A developer creates a custom Filament Page but forgets to apply proper authorization checks, leaving it accessible to unauthorized users or even unauthenticated users. This is a direct failure to use Filament's intended page protection mechanisms.
  • Impact: Unauthorized access to the functionality and data exposed by the custom Filament page. This could range from information disclosure to complete system compromise, depending on the page's purpose.
  • Filament Component Affected: Filament Pages, Custom Page classes, Authorization logic within Filament's page routing and access control.
  • Risk Severity: High to Critical (depending on the page's functionality).
  • Mitigation Strategies:
    • Explicit Authorization: Implement explicit authorization checks within the custom Filament Page class, using Filament's canAccess method or Laravel's authorization mechanisms (policies, gates) as integrated with Filament.
    • Route Protection: Ensure that the route associated with the custom Filament page is protected by appropriate middleware (e.g., auth, verified), leveraging Filament's routing integration.
    • Testing: Write tests that specifically attempt to access the custom Filament page without the necessary permissions, using Filament's testing utilities.
    • Code Review: Carefully review custom Filament page implementations for missing authorization checks, focusing on Filament's page structure and lifecycle.

Threat: Insecure Direct Object Reference (IDOR) in Relation Manager

  • Description: An attacker manipulates the ID of a related record within a Filament Relation Manager to access or modify data they shouldn't have access to. This exploits a failure to properly validate authorization within Filament's relation management context.
  • Impact: Unauthorized access, modification, or deletion of related data managed by Filament. Could lead to data breaches or system compromise.
  • Filament Component Affected: Filament Relation Managers, Authorization logic within Filament's Relation Manager handling.
  • Risk Severity: High.
  • Mitigation Strategies:
    • Authorization Checks: Implement authorization checks within the Filament Relation Manager to ensure that the user has permission to access or modify the specific related record being targeted. Do not rely solely on the parent resource's authorization checks. These checks must be integrated with Filament's relation management logic.
    • Input Validation: Validate the ID of the related record within the Filament Relation Manager to ensure it is a valid ID and that the user has permission to access it, using Filament's request handling.
    • Testing: Write tests that specifically attempt to access or modify related records with different IDs through Filament's Relation Manager UI and API.

Threat: Notification-Based XSS (Filament-Specific Context)

  • Description: An attacker injects malicious JavaScript into data that is then displayed within a Filament Notification. While XSS is a general vulnerability, the specific threat here is failing to properly sanitize data displayed within Filament's notification system.
  • Impact: Cross-site scripting (XSS) attacks, potentially leading to session hijacking or data theft within the Filament admin panel.
  • Filament Component Affected: Filament Notifications, specifically the rendering of notification content.
  • Risk Severity: High.
  • Mitigation Strategies:
    • Output Encoding: Always encode any user-provided or potentially untrusted data before displaying it within a Filament Notification. Use appropriate HTML entity encoding to prevent the browser from interpreting the data as code, specifically within Filament's notification rendering logic.
    • Input Sanitization: While input sanitization is generally important, focus on sanitizing data that will specifically be used in Filament Notifications.