CVE-2021-43799 RabbitMQ exposes ports with weak default secrets in Zulip Server

Zulip is an open-source team collaboration tool. Zulip Server installs RabbitMQ for internal message passing. In versions of Zulip Server prior to 4.9, the initial installation until first reboot, or restart of RabbitMQ does not successfully limit the default ports which RabbitMQ opens; this...