This document addresses the security alerts found by CodeQL analysis.

Status: Mitigated

The remaining path injection alerts in webui.py and rewards_points.py are related to cookie file paths constructed from usernames. These have been mitigated through:

1. Input Validation: All usernames are validated using the sanitize_username() function which only allows alphanumeric characters, @, ., _, and -.

2. Pattern: ^[a-zA-Z0-9@._-]+$

3. Locations Protected:

   • webui.py: All routes using <username> parameter
   • rewards_points.py: Cookie file validation

4. Additional Security Measures:

   • Cookie files are only created in the application directory
   • Filenames follow strict pattern: cookie_<username>.txt
   • No directory traversal possible due to regex validation
   • All errors are logged without exposing stack traces to users

Status: Fixed

All stack trace exposures have been eliminated by:

1. safe_error_response() Helper: Returns generic error messages to users
2. Logging: Detailed errors are logged server-side only
3. No Exception Details: User-facing responses never include str(e) or stack traces

1. Network Security:

   • Change webui.host from 0.0.0.0 to 127.0.0.1 for local-only access
   • Use reverse proxy (nginx/Apache) with HTTPS if exposing to network
   • Implement rate limiting for API endpoints

2. File Permissions:

   • Ensure config.json and account.json have restrictive permissions (600)
   • Cookie files should be readable only by the application user

3. Authentication:

   • Current implementation has no authentication
   • For production use, implement authentication/authorization
   • Consider adding API keys or session management

4. Data Protection:

   • Passwords are stored in plaintext in account.json
   • Consider encrypting sensitive data at rest
   • Use environment variables for sensitive configuration

The CodeQL path injection alerts are false positives because:

1. All usernames go through strict regex validation
2. The regex pattern prevents directory traversal (../, ./, etc.)
3. No user input can introduce path separators
4. Cookie files are constrained to a single directory with validated names

• Implement proper authentication system
• Add CSRF protection for state-changing operations
• Encrypt passwords in configuration files
• Add rate limiting middleware
• Implement audit logging for sensitive operations