Arbitrary Code Execution
Affecting symfony/symfony package, versions >=3.4.0, <3.4.35 || >=4.2.0, <4.2.12 || >=4.3.0, <4.3.8
symfony/symfony is a PHP framework for web applications and a set of reusable PHP components.
Affected versions of this package are vulnerable to Arbitrary Code Execution.
When an instance of
TagAwareAdapter is destructed, Symfony execute callables stored in privates properties in order to invalidates tags. When the instance has been created by unserializing an external payload, those properties are not checked leading to a remote code execution.
symfony/symfony to version 3.4.35, 4.2.12, 4.3.8 or higher.