mitigations.md

Mitigation Strategies Analysis for getsentry/sentry-php

Mitigation Strategy: Data Scrubbing using before_send and before_breadcrumb in sentry-php

• Description:
  1. Identify Sensitive Data: Developers must pinpoint sensitive data types that might be captured by sentry-php in application variables, request parameters, user inputs, and error messages.
  2. Implement before_send function in sentry.php: Within your sentry.php configuration file, define the before_send option as a function. This function will be executed by sentry-php before each error event is transmitted to Sentry.
  3. Implement before_breadcrumb function in sentry.php: Similarly, define the before_breadcrumb option in sentry.php as a function to process breadcrumbs generated by sentry-php before sending.
  4. Redact Sensitive Data within before_send and before_breadcrumb: Inside these functions, use PHP code to inspect the event data (in before_send) and breadcrumb data (in before_breadcrumb) provided by sentry-php. Employ string manipulation, regular expressions, or dedicated libraries within these functions to redact or remove identified sensitive data before sentry-php sends it.
  5. Test Scrubbing Rules with sentry-php: Thoroughly test your scrubbing rules to ensure they function correctly within the sentry-php integration and effectively redact sensitive information without removing crucial debugging details.
  6. Regularly Review and Update sentry-php Scrubbing: Periodically review and update your scrubbing rules in sentry.php as your application evolves and new sensitive data types emerge that sentry-php might capture.
  • Threats Mitigated:
    • Sensitive Data Exposure in Sentry Dashboard via sentry-php: Severity: High. sentry-php might inadvertently send sensitive data to Sentry, which could be exposed if the Sentry dashboard is compromised or accessed by unauthorized users.
    • Accidental Data Leaks through sentry-php: Severity: Medium. Developers using sentry-php might unintentionally configure it to capture and send sensitive data without realizing the security implications.
  • Impact:
    • Sensitive Data Exposure in Sentry Dashboard via sentry-php: Impact: High. Effective scrubbing in sentry-php significantly reduces the risk of sensitive data being sent and exposed via Sentry.
    • Accidental Data Leaks through sentry-php: Impact: High. Proactive scrubbing within sentry-php minimizes the chance of accidental data leaks through the error reporting system.
  • Currently Implemented: Partial - before_send is implemented in config/sentry.php to redact basic PII.
    • Location: config/sentry.php
  • Missing Implementation:
    • before_breadcrumb is not fully utilized in config/sentry.php to scrub breadcrumb data.
    • Scrubbing rules in sentry.php need expansion for application-specific sensitive data and regular updates.

Mitigation Strategy: Control Context Data and Limit Breadcrumb Data Configuration in sentry.php

• Description:
  1. Review Context Data Usage with sentry-php: Audit where context data (user context, tags, extra data) is added to Sentry events via sentry-php calls in your codebase.
  2. Minimize Context Data Sent by sentry-php: Reduce unnecessary context data added through sentry-php that doesn't directly aid debugging.
  3. Sanitize Context Data Before Passing to sentry-php: Sanitize context data in your application code before passing it to sentry-php functions to ensure no sensitive information is included.
  4. Review Default Breadcrumbs in sentry.php Configuration: Examine the default breadcrumb capture settings in your sentry.php configuration (e.g., breadcrumbs.monolog, breadcrumbs.sql_queries, breadcrumbs.http_client).
  5. Disable Unnecessary Breadcrumbs in sentry.php: Disable breadcrumb capture in sentry.php for categories that are not essential or likely to contain sensitive data.
  6. Customize Breadcrumb Capture in sentry.php: If certain breadcrumb types are needed but might contain sensitive data, customize their capture in sentry.php to exclude sensitive parts (e.g., exclude query parameters from HTTP request breadcrumbs via configuration).
  • Threats Mitigated:
    • Sensitive Data Exposure via Context and Breadcrumbs through sentry-php: Severity: Medium. sentry-php's context and breadcrumb features, if not configured carefully, can inadvertently capture and send sensitive data.
    • Information Overload in Sentry due to sentry-php: Severity: Low. Excessive context and breadcrumbs sent by sentry-php can make error analysis in Sentry less efficient.
  • Impact:
    • Sensitive Data Exposure via Context and Breadcrumbs through sentry-php: Impact: Medium. Controlling context and breadcrumbs in sentry-php reduces the potential for data leaks through these features.
    • Information Overload in Sentry due to sentry-php: Impact: Medium. Focused context and breadcrumbs from sentry-php improve Sentry's usability for debugging.
  • Currently Implemented: Partial - User context is added via sentry-php, but review and sanitization are inconsistent. Default breadcrumbs are mostly enabled in config/sentry.php.
    • Location: User context setup in application code and breadcrumb configuration in config/sentry.php.
  • Missing Implementation:
    • Systematic review and minimization of context data usage with sentry-php calls.
    • Customization or disabling of breadcrumbs in sentry.php, especially for HTTP requests and database queries.
    • Guidelines for developers on responsible context data usage with sentry-php.

Mitigation Strategy: Secure DSN Management for sentry-php

• Description:
  1. Environment Variables for DSN: Store the Sentry DSN as an environment variable (e.g., SENTRY_DSN) accessed by your application and sentry-php.
  2. sentry.php Configuration via Environment Variable: Configure sentry-php in sentry.php to retrieve the DSN from the environment variable using env('SENTRY_DSN').
  3. Avoid Hardcoding DSN in sentry-php Configuration: Never hardcode the DSN directly into sentry.php or any other application code that might be version controlled.
  4. Secure Access to DSN Environment: Restrict access to the environment where the DSN environment variable is stored to authorized personnel and systems.
  • Threats Mitigated:
    • DSN Exposure in Public Repositories via sentry-php Configuration: Severity: High. Accidentally committing a hardcoded DSN in sentry.php to a public repository allows unauthorized event submission to your Sentry project.
    • Unauthorized Use of sentry-php DSN: Severity: Medium. If the DSN is leaked, unauthorized individuals could potentially use it to send events to your Sentry project.
  • Impact:
    • DSN Exposure in Public Repositories via sentry-php Configuration: Impact: High. Secure DSN management for sentry-php prevents accidental public exposure and mitigates unauthorized event submission.
    • Unauthorized Use of sentry-php DSN: Impact: Medium. Protecting the DSN used by sentry-php reduces the likelihood of unauthorized project access via DSN misuse.
  • Currently Implemented: Yes - DSN is stored in environment variables and accessed in config/sentry.php.
    • Location: .env file and config/sentry.php.
  • Missing Implementation:
    • No specific missing implementation related to sentry-php DSN management in terms of storage.

Mitigation Strategy: Review Error Message Content Sent via sentry-php

• Description:
  1. Analyze Error Messages Captured by sentry-php: Review the error messages that sentry-php is configured to capture and send to Sentry.
  2. Identify Verbose Messages Sent by sentry-php: Identify error messages that are overly verbose and, when sent via sentry-php, might reveal internal application details.
  3. Customize Error Handling in Application for sentry-php: Implement custom error handling in your application to potentially provide more generic error messages to users while ensuring detailed, but scrubbed and controlled, information is sent to Sentry via sentry-php.
  4. Log Structured Data to Sentry via sentry-php: Utilize sentry-php's context and extra data features to log structured data instead of relying solely on raw error messages, allowing for detailed error reporting without exposing overly verbose raw messages through sentry-php.
  • Threats Mitigated:
    • Information Disclosure via Verbose Error Messages Sent by sentry-php: Severity: Medium. Detailed error messages sent to Sentry via sentry-php could reveal internal application details to attackers with unauthorized access.
  • Impact:
    • Information Disclosure via Verbose Error Messages Sent by sentry-php: Impact: Medium. Reviewing and customizing error messages in relation to sentry-php reduces information leakage through Sentry.
  • Currently Implemented: No - Error messages are generally sent to Sentry via sentry-php as generated by the application.
    • Location: Default error handling in app/Exceptions/Handler.php and sentry-php integration.
  • Missing Implementation:
    • Analysis of error message content captured by sentry-php.
    • Custom error handling to sanitize and control error message detail sent via sentry-php.
    • Guidelines for developers on writing secure and informative error messages in the context of sentry-php integration.

Mitigation Strategy: Regularly Update sentry-php Package

• Description:
  1. Dependency Management for sentry-php: Use Composer to manage the sentry-php package and its dependencies.
  2. Monitor sentry-php Updates: Regularly check for new releases of the getsentry/sentry-php package on Packagist or Sentry's release notes.
  3. Automated sentry-php Updates (with Testing): Ideally, automate updates for the sentry-php package using tools like Dependabot or Renovate, combined with automated testing to prevent regressions.
  4. Manual sentry-php Updates (with Testing): If automation is not feasible, schedule regular manual updates of the sentry-php package. After each update, perform thorough testing.
  • Threats Mitigated:
    • Exploitation of Known Vulnerabilities in sentry-php Package: Severity: High. Outdated versions of the sentry-php package might contain known security vulnerabilities that attackers could exploit in the application's error reporting integration.
  • Impact:
    • Exploitation of Known Vulnerabilities in sentry-php Package: Impact: High. Regular updates of sentry-php significantly reduce the risk of exploiting known vulnerabilities within the error reporting library itself.
  • Currently Implemented: Partial - Composer is used, manual updates are periodic.
    • Location: composer.json and project's development/release process.
  • Missing Implementation:
    • Automated sentry-php package updates using tools like Dependabot or Renovate.
    • Establish a process for promptly applying sentry-php updates, especially security-related ones.

Mitigation Strategy: Secure sentry.php Configuration Practices

• Description:
  1. Regularly Review sentry.php Configuration: Periodically review the sentry.php configuration file to ensure it aligns with security best practices and your organization's security policies regarding error reporting.
  2. Least Privilege Configuration in sentry.php: Configure sentry-php with the principle of least privilege. Only enable features and data capture in sentry.php that are strictly necessary for effective error monitoring and debugging. Avoid overly permissive settings.
  • Threats Mitigated:
    • Misconfiguration of sentry-php Leading to Data Overexposure: Severity: Medium. Overly permissive configurations in sentry.php could unintentionally cause sentry-php to capture and expose more data than required, increasing the risk of sensitive information leaks.
  • Impact:
    • Misconfiguration of sentry-php Leading to Data Overexposure: Impact: Medium. Regular sentry.php configuration reviews and applying least privilege principles minimize the risk of data overexposure through the error reporting system.
  • Currently Implemented: Partial - Basic configuration is in place, but regular reviews and least privilege configuration are not consistently enforced for sentry.php.
    • Location: config/sentry.php.
  • Missing Implementation:
    • Formalized process for regular review of sentry.php configuration.
    • Implementation of stricter least privilege configuration within sentry.php.

Mitigation Strategy: Monitor Performance Impact of sentry-php Integration

• Description:
  1. Sentry Performance Monitoring Features: Utilize Sentry's performance monitoring features to track the performance impact of the sentry-php integration on your application's responsiveness and resource usage.
  2. Application Performance Monitoring: Monitor your application's performance metrics (response times, CPU usage, memory usage) specifically in relation to the sentry-php integration, especially in high-traffic scenarios.
  3. Optimize sentry-php Configuration for Performance: If performance issues are identified, review and optimize your sentry-php configuration. Consider asynchronous transport options or adjusting sampling rates to reduce overhead.
  • Threats Mitigated:
    • Performance Degradation due to Inefficient sentry-php Integration: Severity: Low. Inefficient or poorly configured sentry-php integration can potentially contribute to application performance degradation, indirectly impacting availability and user experience.
  • Impact:
    • Performance Degradation due to Inefficient sentry-php Integration: Impact: Medium. Performance monitoring and optimization of sentry-php help prevent the error reporting system from becoming a performance bottleneck and ensure it doesn't negatively impact application availability.
  • Currently Implemented: Basic error rate monitoring via Sentry dashboards. Performance monitoring features of Sentry are not actively utilized for sentry-php integration specifically.
    • Location: Sentry project dashboards.
  • Missing Implementation:
    • Proactive performance monitoring of sentry-php integration using Sentry's performance features or external APM tools.
    • Performance testing specifically focused on the impact of sentry-php under load.
    • Optimization of sentry-php configuration based on performance monitoring data.