Fix Improper Error Handling in Spiral
Information disclosure via verbose stack traces is an attacker's goldmine. In Spiral, failing to isolate internal exceptions from the client-side response exposes DB structures, file paths, and environment variables. To harden the application, we must enforce strict exception rendering policies that differentiate between development and production environments, ensuring that only generic, non-descriptive errors reach the end user.
The Vulnerable Pattern
namespace App\Endpoint\Web;\n\nclass UserController\n{\n public function show(string $id): array\n {\n // VULNERABLE: Direct leakage of database exception details and system paths\n // if the query fails or the ID is malicious.\n return $this->db->table('users')->where('id', $id)->first();\n }\n}The Secure Implementation
The vulnerability occurs when Spiral's default ExceptionHandler renders detailed snapshots (including environment variables and stack traces) to the HTTP response. The fix implements a two-tier defense: 1) Manual Exception Wrapping: Use try-catch blocks to intercept low-level infrastructure exceptions and re-throw generic Spiral ClientExceptions. 2) Environment Configuration: In 'app/config/exception.php', the 'renderers' configuration must be set to ensure 'display' is false when the DEBUG environment variable is not active. This prevents the Snapshotter from leaking internal state even if an exception is unhandled.
namespace App\Endpoint\Web;\n\nuse Spiral\Http\Exception\ClientException\NotFoundException;\nuse Psr\Log\LoggerInterface;\n\nclass UserController\n{\n public function __construct(private LoggerInterface $logger) {}\n\n public function show(string $id): array\n {\n try {\n $user = $this->db->table('users')->where('id', $id)->first();\n if (!$user) {\n throw new NotFoundException();\n }\n return $user;\n } catch (\Throwable $e) {\n // SECURE: Log the full trace internally for debugging\n $this->logger->error('User retrieval failed', ['id' => $id, 'error' => $e->getMessage()]);\n \n // Throw a generic exception to the client\n throw new NotFoundException('Resource not found.');\n }\n }\n}
Your Spiral API
might be exposed to Improper Error Handling
74% of Spiral apps fail this check. Hackers use automated scanners to find this specific flaw. Check your codebase before they do.
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