CVE-2020-5220

### Impact ResourceBundle accepts and uses any serialisation groups to be passed via a HTTP header. This might lead to data exposure by using an unintended serialisation group - for example it could make Shop API use a more permissive group from Admin API. Anyone exposing an API with ResourceBundle's controller is affected. The vulnerable versions are: `<1.3 || >=1.3.0 <=1.3.12 || >=1.4.0 <=1.4.5 || >=1.5.0 <=1.5.0 || >=1.6.0 <=1.6.2`. ### Patches The patch is provided for ResourceBundle 1.3.13, 1.4.6, 1.5.1 and 1.6.3, but not for any versions below 1.3. After it is applied, It allows to choose only the groups that are defined in `serialization_groups` or `allowed_serialization_groups` route definition. Any group not defined in those will not be used. This behaviour might be a BC break for those using custom groups via the HTTP header, please adjust `allowed_serialization_groups` accordingly. ### Workarounds Service `sylius.resource_controller.request_configuration_factory` can be overridden with an implementation copied from `\Sylius\Bundle\ResourceBundle\Controller\RequestConfigurationFactory` where the part that handles custom serialisation groups is deleted.

### Impact This vulnerability gives the ability to switch channels via the `_channel_code` GET parameter in production environments. This was meant to be enabled only when `%kernel.debug%` is set to true. However, if no `sylius_channel.debug` is set explicitly in the configuration, the default value which is `%kernel.debug%` will be not resolved and cast to boolean, enabling this debug feature even if that parameter is set to false. ### Patches Patch has been provided for Sylius 1.3.x and newer - **1.3.16, 1.4.12, 1.5.9, 1.6.5**. Versions older than 1.3 are not covered by our security support anymore. ### Workarounds Unsupported versions could be patched by adding the following configuration to run in production: ```yaml sylius_channel: debug: false ```

Affected versions of Sylius give attackers the ability to switch channels via the _channel_code GET parameter in production environments. This was meant to be enabled only when kernel.debug is set to true. However, if no sylius_channel.debug is set explicitly in the configuration, the default value which is kernel.debug will be not resolved and cast to boolean, enabling this debug feature even if that parameter is set to false. Patch has been provided for Sylius 1.3.x and newer - 1.3.16, 1.4.12, 1.5.9, 1.6.5. Versions older than 1.3 are not covered by our security support anymore.