A RabbitMQ security update has been released for Ubuntu Linux 16.04 ESM, 18.04 LTS, 20.04 LTS, 20.10, and 21.04.

USN-5004-1: RabbitMQ vulnerabilities

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Ubuntu Security Notice USN-5004-1
June 24, 2021

rabbitmq-server vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in rabbitmq-server.

Software Description:
- rabbitmq-server: AMQP server written in Erlang

Details:

It was discovered that RabbitMQ incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service. This
issue only affected Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2019-11287)

Jonathan Knudsen discovered RabbitMQ incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2021-22116)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
rabbitmq-server 3.8.9-2ubuntu0.1

Ubuntu 20.10:
rabbitmq-server 3.8.5-1ubuntu0.2

Ubuntu 20.04 LTS:
rabbitmq-server 3.8.2-0ubuntu1.3

Ubuntu 18.04 LTS:
rabbitmq-server 3.6.10-1ubuntu0.5

Ubuntu 16.04 ESM:
rabbitmq-server 3.5.7-1ubuntu0.16.04.4+esm1

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-5004-1
CVE-2019-11287, CVE-2021-22116

Package Information:
  https://launchpad.net/ubuntu/+source/rabbitmq-server/3.8.9-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/rabbitmq-server/3.8.5-1ubuntu0.2
  https://launchpad.net/ubuntu/+source/rabbitmq-server/3.8.2-0ubuntu1.3
  https://launchpad.net/ubuntu/+source/rabbitmq-server/3.6.10-1ubuntu0.5