CVE-2022-1471

La clase Constructor() de SnakeYaml no restringe los tipos de los que se pueden crear instancias durante la deserialización. La deserialización del contenido yaml proporcionado por un atacante puede conducir a la ejecución remota de código. Recomendamos utilizar SafeConsturctor de SnakeYaml al analizar contenido que no es de confianza para restringir la deserialización. Recomendamos actualizar a la versión 2.0 y posteriores.

A flaw was found in the SnakeYaml package. This flaw allows an attacker to benefit from remote code execution by sending malicious YAML content and this content being deserialized by the constructor. Deserialization is unsafe and leads to Remote Code Execution (RCE).

The PyTorch model server contains multiple vulnerabilities that can be chained together to permit an unauthenticated remote attacker arbitrary Java code execution. The first vulnerability is that the management interface is bound to all IP addresses and not just the loop back interface as the documentation suggests. The second vulnerability (CVE-2023-43654) allows attackers with access to the management interface to register MAR model files from arbitrary servers. The third vulnerability is that when an MAR file is loaded, it can contain a YAML configuration file that when deserialized by snakeyaml, can lead to loading an arbitrary Java class.