RabbitMQ vulnerable to Denial of Service by publishing large messages over the HTTP API

NVD Description

### Summary Responsibly disclosed by @NSEcho. HTTP API did not enforce an HTTP request body limit, making it vulnerable for DoS attacks with very large messages. ### Details An authenticated user with sufficient credentials can publish a very large messages over the HTTP API and cause target node to be terminated by an "out-of-memory killer"-like mechanism. A PoC was provided to Team RabbitMQ privately. ### Impact Denial of Service

Affected Packages (1)