CVE-2020-5220
Ability to expose data in Sylius by using an unintended serialisation group
Description
### 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.
How to fix CVE-2020-5220
To remediate CVE-2020-5220, upgrade the affected package to a fixed version below.
- —upgrade to 1.4.6 or later
- —upgrade to 1.3.12 or later
Is CVE-2020-5220 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 1.4.0, < 1.4.6