Admin user can call arbitrary Module class's constructor via Cart Pri…

app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Catalog.php

@@ -43,7 +43,7 @@ abstract class Catalog extends Action
     /**
      * Date filter instance
      *
-     * @var \Magento\Framework\Stdlib\DateTime\Filter\Date
+     * @var Date
      */
     protected $_dateFilter;
 

app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Catalog/NewActionHtml.php

@@ -4,15 +4,17 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-namespace Magento\CatalogRule\Controller\Adminhtml\Promo\Catalog;
 
-use Magento\Rule\Model\Action\AbstractAction;
+declare(strict_types=1);
+namespace Magento\CatalogRule\Controller\Adminhtml\Promo\Catalog;
 
 /**
  * @SuppressWarnings(PHPMD.AllPurposeAction)
  */
-class NewActionHtml extends \Magento\CatalogRule\Controller\Adminhtml\Promo\Catalog
+class NewActionHtml extends NewHtml
 {
+    protected string $typeChecked = 'Magento\Rule\Model\Action\AbstractAction';
+
     /**
      * Execute new action html.
      *
@@ -24,21 +26,21 @@ public function execute()
         $typeArr = explode('|', str_replace('-', '/', $this->getRequest()->getParam('type', '')));
         $type = $typeArr[0];
 
-        $model = $this->_objectManager->create($type)
-            ->setId($id)
-            ->setType($type)
-            ->setRule($this->_objectManager->create(\Magento\CatalogRule\Model\Rule::class))
-            ->setPrefix('actions');
+        $model = $this->_objectManager->create($type);
+        if ($this->verifyClassName($model)) {
+            $model->setId($id)
+                ->setType($type)
+                ->setRule($this->_objectManager->create(\Magento\CatalogRule\Model\Rule::class))
+                ->setPrefix('actions');
 
-        if (!empty($typeArr[1])) {
-            $model->setAttribute($typeArr[1]);
-        }
+            if (!empty($typeArr[1])) {
+                $model->setAttribute($typeArr[1]);
+            }
 
-        if ($model instanceof AbstractAction) {
             $model->setJsFormObject($this->getRequest()->getParam('form'));
             $html = $model->asHtmlRecursive();
-        } else {
-            $html = '';
+        }else {
+            $html = $this->getErrorJson();
         }
         $this->getResponse()->setBody($html);
     }

app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Catalog/NewConditionHtml.php

@@ -4,15 +4,18 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
+declare(strict_types=1);
 namespace Magento\CatalogRule\Controller\Adminhtml\Promo\Catalog;
 
+use Magento\CatalogRule\Model\Rule;
 use Magento\Framework\App\Action\HttpGetActionInterface;
 use Magento\Framework\App\Action\HttpPostActionInterface as HttpPostActionInterface;
-use Magento\Rule\Model\Condition\AbstractCondition;
-use Magento\CatalogRule\Controller\Adminhtml\Promo\Catalog as CatalogAction;
 
-class NewConditionHtml extends CatalogAction implements HttpPostActionInterface, HttpGetActionInterface
+class NewConditionHtml extends NewHtml implements HttpPostActionInterface, HttpGetActionInterface
 {
+    protected string $typeChecked = 'Magento\Rule\Model\Condition\AbstractCondition';
+
     /**
      * Execute new condition html.
      *
@@ -25,23 +28,25 @@ public function execute()
         $typeArr = explode('|', str_replace('-', '/', $this->getRequest()->getParam('type', '')));
         $type = $typeArr[0];
 
-        $model = $this->_objectManager->create($type)
-            ->setId($id)
-            ->setType($type)
-            ->setRule($this->_objectManager->create(\Magento\CatalogRule\Model\Rule::class))
-            ->setPrefix('conditions');
+        $model = $this->_objectManager->create($type);
 
-        if (!empty($typeArr[1])) {
-            $model->setAttribute($typeArr[1]);
-        }
+        if ($this->verifyClassName($model)) {
+            $model->setId($id)
+                ->setType($type)
+                ->setRule($this->_objectManager->create(Rule::class))
+                ->setPrefix('conditions');
+
+            if (!empty($typeArr[1])) {
+                $model->setAttribute($typeArr[1]);
+            }
 
-        if ($model instanceof AbstractCondition) {
             $model->setJsFormObject($this->getRequest()->getParam('form'));
             $model->setFormName($formName);
             $html = $model->asHtmlRecursive();
         } else {
-            $html = '';
+            $html = $this->getErrorJson();
         }
+
         $this->getResponse()->setBody($html);
     }
 }

app/code/Magento/CatalogRule/Controller/Adminhtml/Promo/Catalog/NewHtml.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\CatalogRule\Controller\Adminhtml\Promo\Catalog;
+
+use Magento\Backend\App\Action\Context;
+use Magento\CatalogRule\Controller\Adminhtml\Promo\Catalog as CatalogAction;
+use Magento\Framework\Registry;
+use Magento\Framework\Serialize\SerializerInterface;
+use Magento\Framework\Stdlib\DateTime\Filter\Date;
+
+abstract class NewHtml extends CatalogAction
+{
+    /**
+     * @var string
+     */
+    protected string $typeChecked = '';
+
+    /**
+     * @var SerializerInterface
+     */
+    protected SerializerInterface $serializer;
+
+    public function __construct(
+        Context             $context,
+        Registry            $coreRegistry,
+        Date                $dateFilter,
+        SerializerInterface $serializer
+    ){
+        parent::__construct($context, $coreRegistry, $dateFilter);
+
+        $this->serializer   = $serializer;
+    }
+
+    /**
+     * Verify class instance
+     *
+     * @param mixed $verifyClass
+     * @return bool
+     */
+    public function verifyClassName($verifyClass): bool
+    {
+        if ($verifyClass instanceof $this->typeChecked) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Get Error json
+     *
+     * @return bool|string
+     */
+    protected function getErrorJson()
+    {
+        return $this->serializer->serialize(
+            [
+                'error'     => true,
+                'message'   => __('Selected type is not inherited from type %1', $this->typeChecked)
+            ]
+        );
+    }
+}