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GHSA-7563-75j9-6h5p

Опубликовано: 14 мар. 2022
Источник: github
Github: Прошло ревью
CVSS3: 5

Описание

Sensitive Information Exposure in Sylius

Impact

Any other user can view the data if the browser tab remains open after logging out. Once someone logs out and leaves the browser open, the potential attacker may use the back button to see the content exposed on given screens. No action may be performed though, and any website refresh will block further reads. It may, however, lead to a data leak, like for example customer details, payment gateway configuration, etc.- but only if these were pages checked by the administrator.

This vulnerability requires full access to the computer to take advantage of it.

Patches

The issue is fixed in versions: 1.9.10, 1.10.11, 1.11.2 and above.

Workarounds

The application must strictly redirect to the login page even when the browser back button is pressed. Another possibility is to set more strict cache policies for restricted content (like no-store). It can be achieved with the following class:

<?php declare(strict_types=1); namespace App\EventListener; use App\SectionResolver\ShopCustomerAccountSubSection; use Sylius\Bundle\AdminBundle\SectionResolver\AdminSection; use Sylius\Bundle\CoreBundle\SectionResolver\SectionProviderInterface; use Symfony\Component\EventDispatcher\EventSubscriberInterface; use Symfony\Component\HttpKernel\Event\ResponseEvent; use Symfony\Component\HttpKernel\KernelEvents; final class CacheControlSubscriber implements EventSubscriberInterface { /** @var SectionProviderInterface */ private $sectionProvider; public function __construct(SectionProviderInterface $sectionProvider) { $this->sectionProvider = $sectionProvider; } public static function getSubscribedEvents(): array { return [ KernelEvents::RESPONSE => 'setCacheControlDirectives', ]; } public function setCacheControlDirectives(ResponseEvent $event): void { if ( !$this->sectionProvider->getSection() instanceof AdminSection && !$this->sectionProvider->getSection() instanceof ShopCustomerAccountSubSection ) { return; } $response = $event->getResponse(); $response->headers->addCacheControlDirective('no-cache', true); $response->headers->addCacheControlDirective('max-age', '0'); $response->headers->addCacheControlDirective('must-revalidate', true); $response->headers->addCacheControlDirective('no-store', true); } }

After that register service in the container:

services: App\EventListener\CacheControlSubscriber: arguments: ['@sylius.section_resolver.uri_based_section_resolver'] tags: - { name: kernel.event_subscriber, event: kernel.response }

The code above requires changes in ShopUriBasedSectionResolver in order to work. To backport mentioned logic, you need to replace the Sylius\Bundle\ShopBundle\SectionResolver\ShopUriBasedSectionResolver class with:

<?php declare(strict_types=1); namespace App\SectionResolver; use Sylius\Bundle\CoreBundle\SectionResolver\SectionInterface; use Sylius\Bundle\CoreBundle\SectionResolver\UriBasedSectionResolverInterface; use Sylius\Bundle\ShopBundle\SectionResolver\ShopSection; final class ShopUriBasedSectionResolver implements UriBasedSectionResolverInterface { /** @var string */ private $shopCustomerAccountUri; public function __construct(string $shopCustomerAccountUri = 'account') { $this->shopCustomerAccountUri = $shopCustomerAccountUri; } public function getSection(string $uri): SectionInterface { if (str_contains($uri, $this->shopCustomerAccountUri)) { return new ShopCustomerAccountSubSection(); } return new ShopSection(); } }
services: sylius.section_resolver.shop_uri_based_section_resolver: class: App\SectionResolver\ShopUriBasedSectionResolver tags: - { name: sylius.uri_based_section_resolver, priority: -10 }

You also need to define a new subsection for the Customer Account that is used in the above services:

<?php declare(strict_types=1); namespace App\SectionResolver; use Sylius\Bundle\ShopBundle\SectionResolver\ShopSection; class ShopCustomerAccountSubSection extends ShopSection { }

References

For more information

If you have any questions or comments about this advisory:

Пакеты

Наименование

sylius/sylius

composer
Затронутые версииВерсия исправления

< 1.9.10

1.9.10

Наименование

sylius/sylius

composer
Затронутые версииВерсия исправления

>= 1.10, < 1.10.11

1.10.11

Наименование

sylius/sylius

composer
Затронутые версииВерсия исправления

>= 1.11, < 1.11.2

1.11.2

EPSS

Процентиль: 57%
0.00353
Низкий

5 Medium

CVSS3

Дефекты

CWE-200
CWE-213
CWE-668

Связанные уязвимости

CVSS3: 5
nvd
почти 4 года назад

Sylius is an open source eCommerce platform. Prior to versions 1.9.10, 1.10.11, and 1.11.2, any other user can view the data if browser tab remains unclosed after log out. The issue is fixed in versions 1.9.10, 1.10.11, and 1.11.2. A workaround is available. The application must strictly redirect to login page even browser back button is pressed. Another possibility is to set more strict cache policies for restricted content.

EPSS

Процентиль: 57%
0.00353
Низкий

5 Medium

CVSS3

Дефекты

CWE-200
CWE-213
CWE-668