CVE-2022-22963

En Spring Cloud Function versiones 3.1.6, 3.2.2 y versiones anteriores no soportadas, cuando es usada la funcionalidad routing es posible que un usuario proporcione un SpEL especialmente diseñado como expresión de enrutamiento que puede resultar en la ejecución de código remota y el acceso a recursos locales

A flaw was found in Spring Cloud Function via the spring.cloud.function.routing-expression header that is modified by the attacker to contain malicious expression language code. The attacker is able to call functions that should not normally be accessible, including runtime exec calls.

Spring Cloud Function versions prior to 3.1.7 and 3.2.3 are vulnerable to remote code execution due to using an unsafe evaluation context with user-provided queries. By crafting a request to the application and setting the spring.cloud.function.routing-expression header, an unauthenticated attacker can gain remote code execution. Both patched and unpatched servers will respond with a 500 server error and a JSON encoded message.

When using routing functionality in VMware Tanzu's Spring Cloud Function, it is possible for a user to provide a specially crafted SpEL as a routing-expression that may result in remote code execution and access to local resources.