Spring Cloud Function Framework vulnerable to Denial of Service

In Spring Cloud Function framework, versions 4.1.x prior to 4.1.2, 4.0.x prior to 4.0.8 an application is vulnerable to a DOS attack when attempting to compose functions with non-existing functions.

Specifically, an application is vulnerable when all of the following are true:

User is using Spring Cloud Function Web module

Affected Spring Products and Versions Spring Cloud Function Framework 4.1.0 to 4.1.2 4.0.0 to 4.0.8

References https://spring.io/security/cve-2022-22979   https://checkmarx.com/blog/spring-function-cloud-dos-cve-2022-22979-and-unintended-function-invocation/  History 2020-01-16: Initial vulnerability report published.