Package Instance

Spring Boot Actuator denial of service vulnerability
In Spring Boot versions 2.7.0 - 2.7.17, 3.0.0-3.0.12 and 3.1.0-3.1.5, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.

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

*  the application uses Spring MVC or Spring WebFlux
*  `org.springframework.boot:spring-boot-actuator` is on the classpath

Spring Boot EndpointRequest.to() creates wrong matcher if actuator endpoint is not exposed
EndpointRequest.to() creates a matcher for null/** if the actuator endpoint, for which the EndpointRequest has been created, is disabled or not exposed.

Your application may be affected by this if all the following conditions are met:

  *  You use Spring Security
  *  EndpointRequest.to() has been used in a Spring Security chain configuration
  *  The endpoint which EndpointRequest references is disabled or not exposed via web
  *  Your application handles requests to /null and this path needs protection


You are not affected if any of the following is true:

  *  You don't use Spring Security
  *  You don't use EndpointRequest.to()
  *  The endpoint which EndpointRequest.to() refers to is enabled and is exposed
  *  Your application does not handle requests to /null or this path does not need protection