Spring Cloud Function SpEL Injection
Posted on 31 March 2022
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.
