Cannot instantiate interface `Magento\Csp\Model\Collector\MergerInterface` when `Magento_Csp` is disabled

[fritzmg]

Preconditions and environment

• Magento version: 2.4.7-p2
• Magento_Csp disabled

Steps to reproduce

1. Update or install Magento 2.4.7-p2.
2. Execute bin/magento module:disable Magento_Csp.
3. Go to the checkout.

Expected result

The checkout should be rendered.

Actual result

The following error is thrown:

Error: Cannot instantiate interface Magento\Csp\Model\Collector\MergerInterface in vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php:50
Stack trace:
#0 vendor/magento/framework/ObjectManager/ObjectManager.php(73): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create()
#1 vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(170): Magento\Framework\ObjectManager\ObjectManager->get()
#2 vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(276): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgument()
#3 vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(239): Magento\Framework\ObjectManager\Factory\AbstractFactory->getResolvedArgument()
#4 vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(34): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgumentsInRuntime()
#5 vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(59): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->_resolveArguments()
#6 vendor/magento/framework/ObjectManager/ObjectManager.php(73): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create()
#7 vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(170): Magento\Framework\ObjectManager\ObjectManager->get()
#8 vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(276): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgument()
#9 vendor/magento/framework/ObjectManager/Factory/AbstractFactory.php(239): Magento\Framework\ObjectManager\Factory\AbstractFactory->getResolvedArgument()
#10 vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(34): Magento\Framework\ObjectManager\Factory\AbstractFactory->resolveArgumentsInRuntime()
#11 vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php(59): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->_resolveArguments()
#12 vendor/magento/framework/ObjectManager/ObjectManager.php(73): Magento\Framework\ObjectManager\Factory\Dynamic\Developer->create()
#13 vendor/magento/module-payment-services-paypal/Model/ConfigProvider.php(65): Magento\Framework\ObjectManager\ObjectManager->get()
…

Additional information

The cause are these lines within vendor/magento/module-payment-services-paypal/Model/ConfigProvider.php

    //TODO:Just to be compatible with 2.4.6. Remove in future
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    try {
        $this->cspNonceProvider = $objectManager->get("\Magento\Csp\Helper\CspNonceProvider");
    } catch (\ReflectionException $e) {
        $this->cspNonceProvider = null;
    }

The error is not of type \ReflectionException, instead it is of type \Error - thus the error is not caught.

To fix it, it could be changed as follows:

    //TODO:Just to be compatible with 2.4.6. Remove in future
    $objectManager = \Magento\Framework\App\ObjectManager::getInstance();
    try {
        $this->cspNonceProvider = $objectManager->get("\Magento\Csp\Helper\CspNonceProvider");
-   } catch (\ReflectionException $e) {
+   } catch (\Throwable) {
        $this->cspNonceProvider = null;
    }

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @fritzmg. Thank you for your report.
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[Franciscof-Serfe]

Hi @fritzmg ,
I think that this could be related to this security improvement:
https://experienceleague.adobe.com/en/docs/commerce-operations/release/notes/magento-open-source/2-4-7#:~:text=Changes%20to%20Content%20Security%20Policy

Magento updated CSP to restrict mode at checkout.
You can use this module to bypass it meanwhile you fix the code to enable CSP.

https://github.com/yireo/Yireo_DisableCsp

[fritzmg]

Well Magento has support for CSP for some while now, not just recently. The issue is just with the Magento_PaymentServicesPaypal module that comes with Magento Community Edition. It currently has an erroneous hard dependency on Magento_Csp. Judging by the code it is supposed to be a soft dependency, but it currently does not work (due to the wrong catch type).

[MarcusSchwarz]

I can confirm the issue with 2.4.6-p7 as well.

File affected: vendor/magento/module-paypal/Model/Config.php
Workaround:

             }
         }

-        $this->cspNonceProvider = $cspNonceProvider ?: ObjectManager::getInstance()->get(CspNonceProvider::class);
+        try {
+            $this->cspNonceProvider = $cspNonceProvider ?: ObjectManager::getInstance()->get(CspNonceProvider::class);
+        } catch (\Throwable $e) {
+            $this->cspNonceProvider = null;
+        }
     }

     /**

The checkout is also affected. A new Observer has been introduced: Magento\Checkout\Observer\CspPolicyObserver

File affected: vendor/magento/module-checkout/etc/frontend/events.xml
Workaround:

     <event name="customer_logout">
         <observer name="unsetAll" instance="Magento\Checkout\Observer\UnsetAllObserver" />
     </event>
-    <event name="controller_action_predispatch_checkout_index_index">
-        <observer name="cps_storefront_checkout_index_index_predispatch"
-                  instance="Magento\Checkout\Observer\CspPolicyObserver"/>
-    </event>
+<!--    <event name="controller_action_predispatch_checkout_index_index">-->
+<!--        <observer name="cps_storefront_checkout_index_index_predispatch"-->
+<!--                  instance="Magento\Checkout\Observer\CspPolicyObserver"/>-->
+<!--    </event>-->
 </config>

[Franciscof-Serfe]

Marcus,
As I mentioned in my previous note, after M2.4.7 Adobe decided to force CSP in restricted mode for the checkout and payment line. It's not an error.

Default config:
https://developer.adobe.com/commerce/php/development/security/content-security-policies/#default-configuration

Commit REF: 25cf7f0#diff-32ed90c0e573d5dd4047b67db44768fca797fa1df717c8d883956d3a6b8d2fd6

I understand that someone from the Adobe team should clarify this.
@nathanjosiah can you add your 2 cents?

Previous discussion on Magento_Csp behavior change at checkout: #38823

Background info: https://m.academy/articles/magento-apsb24-40-security-patch-csp-checkout-updates/#:~:text=Impact%20on%20Checkout%20Functionality

[MarcusSchwarz]

@Franciscof-Serfe please note, we are not on 2.4.7. We are on 2.4.6-p7; In a security release there should never be such a breaking change.

[fritzmg]

Adobe decided to force CSP in restricted mode for the checkout and payment line. It's not an error.

Nevertheless, modules that have a hard dependency on Magento_Csp need to define it as such. Currently Magento_PaymentServicesPaypal has no dependency and thus Magento_Csp can be disabled, which leads to the aforementioned error.

[nathanjosiah]

The new CSP changes are new PCI requirements for all payment pages per PCI version 4 section 6.4.3. Since all of our supported versions must be PCI compliant this change had to be made.

Having said that, it does appear there is an error with the type that violates our policies. But, I would strongly advise you to get your site working with CSP as this is the last line of defense against malware and card skimmers. Plus, it would put you at risk of PCI audit failure especially since the auditors will be on high alert since it's a new requirement.

[nathanjosiah]

@magento export issue to Jira project AC as Bug

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