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laravel-security

Skill0 starsChanged 28 days agoMITView on GitHub

Sécurité des applications Laravel 13. Auth, authorization, CSRF, injection, headers, rate limiting, audit. Utiliser quand on sécurise une app, on audit du code, on configure l'auth, ou on répond à une faille de sécurité.

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SKILL.md

Laravel Security — Sécurité Laravel 13

Tu es un expert en sécurité Laravel 13. Ton rôle est de durcir les applications contre les vulnérabilités courantes.

Quand utiliser

  • Sécuriser une application Laravel
  • Auditor du code pour des failles
  • Configurer l'authentification et l'autorisation
  • Répondre à une CVE ou une faille signalée

Quand NE PAS utiliser

  • Feature development (pas de sécurité)
  • Performance optimization
  • Déploiement

Checklist sécurité

Authentification

// ✅ Bon : Rate limiting sur login
Route::post('/login', [LoginController::class, 'login'])
    ->middleware('throttle:5,1');

// ✅ Bon : Validation forte du mot de passe
class StoreUserRequest extends FormRequest
{
    public function rules(): array
    {
        return [
            'password' => ['required', 'string', Password::min(8)->mixedCase()->numbers()->symbols()],
        ];
    }
}

// ✅ Bon : Confirmation de mot de passe pour actions sensibles
Route::middleware('password.confirm')->group(function () {
    Route::delete('/account', [AccountController::class, 'destroy']);
});

Authorization

<?php

namespace App\Policies;

use App\Models\Post;
use App\Models\User;

class PostPolicy
{
    public function viewAny(User $user): bool
    {
        return true;
    }

    public function view(User $user, Post $post): bool
    {
        return $user->id === $post->user_id;
    }

    public function create(User $user): bool
    {
        return $user->hasVerifiedEmail();
    }

    public function update(User $user, Post $post): bool
    {
        return $user->id === $post->user_id;
    }

    public function delete(User $user, Post $post): bool
    {
        return $user->id === $post->user_id;
    }
}

Mass Assignment

<?php

// ✅ Bon : $fillable (whitelist)
class Post extends Model
{
    protected $fillable = ['title', 'content', 'user_id'];
}

// ✅ Bon : $guarded (blacklist)
class Post extends Model
{
    protected $guarded = ['id', 'created_at', 'updated_at'];
}

// ❌ Mal : ni $fillable ni $guarded
class Post extends Model
{
    // Risque de mass assignment vulnerability
}

SQL Injection

// ✅ Bon : Requêtes préparées
Post::where('user_id', $userId)->get();
DB::select('SELECT * FROM posts WHERE user_id = ?', [$userId]);

// ❌ Mal : Injection SQL
DB::select("SELECT * FROM posts WHERE user_id = $userId");
Post::whereRaw("user_id = $userId")->get();

XSS

{{-- ✅ Bon : Échappement automatique --}}
{{ $user->name }}

{{-- ❌ Mal : Pas d'échappement --}}
{!! $user->name !!}  {{-- Seulement si nécessaire et avec nettoyage --}}

CSRF

// ✅ Bon : CSRF token dans les formulaires
<form method="POST" action="/posts">
    @csrf
    <input type="text" name="title">
</form>

// ✅ Bon : Exclusion pour les webhooks
class VerifyCsrfToken extends Middleware
{
    protected $except = [
        'webhooks/*',
    ];
}

Headers de sécurité

// ✅ Bon : Headers de sécurité dans Kernel
protected $middlewareGroups = [
    'web' => [
        \Illuminate\Http\Middleware\HandleCors::class,
        \App\Http\Middleware\EncryptCookies::class,
        // ...
    ],
];

// ✅ Bon : CSP Headers
class ContentSecurityPolicyHeaders
{
    public function handle($request, Closure $next)
    {
        $response = $next($request);
        $response->headers->set('Content-Security-Policy', "default-src 'self'");
        $response->headers->set('X-Content-Type-Options', 'nosniff');
        $response->headers->set('X-Frame-Options', 'DENY');
        $response->headers->set('X-XSS-Protection', '1; mode=block');
        return $response;
    }
}

Rate Limiting

<?php

use Illuminate\Support\Facades\RateLimiter;
use Illuminate\Http\Request;

Route::middleware('throttle:api')->group(function () {
    Route::get('/user', function (Request $request) {
        return $request->user();
    });
});

// Configurer dans AppServiceProvider
RateLimiter::for('api', function (Request $request) {
    return Limit::perMinute(60)->by($request->user()?->id ?: $request->ip());
});

Environnement

# ✅ Bon : Variables d'env pour les secrets
APP_KEY=base64:...
DB_PASSWORD=secret
MAIL_PASSWORD=secret

# ❌ Mal : Secrets en dur dans le code
$apiKey = 'sk-1234567890abcdef';

Audit de sécurité

# Vérifier les dépendances vulnérables
composer audit

# Vérifier les variables d'env exposées
grep -r "password\|secret\|key" --include="*.php" .

# Vérifier les masses assignment
grep -r "protected \$guarded = \[\]" --include="*.php" .

# Vérifier les requêtes Raw
grep -r "whereRaw\|DB::select\|DB::statement" --include="*.php" .

Bonnes pratiques

  1. Validation côté serveur TOUJOURS — Même si le frontend valide
  2. Mass assignment protection — $fillable ou $guarded
  3. Rate limiting — Sur tous les endpoints sensibles
  4. CSP headers — En production
  5. Audit des dépendances — composer audit régulièrement
  6. Pas de secrets en dur — Toujours les variables d'env
  7. HTTPS partout — Rediriger HTTP → HTTPS
  8. Cookies sécurisés — secure, httpOnly, sameSite
  9. Logging des actions sensibles — Audit trail
  10. Principe du moindre privilège — Le moins de permissions possible

Validation

  • composer audit passe sans vulnerabilities
  • Tous les modèles ont $fillable ou $guarded
  • Rate limiting sur les endpoints auth
  • CSP headers configurés
  • Pas de secrets en dur
  • HTTPS forcé
  • Cookies sécurisés

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