CVE-2021-22116

Publication date 8 June 2021

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

RabbitMQ all versions prior to 3.8.16 are prone to a denial of service vulnerability due to improper input validation in AMQP 1.0 client connection endpoint. A malicious user can exploit the vulnerability by sending malicious AMQP messages to the target RabbitMQ instance having the AMQP 1.0 plugin enabled.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
rabbitmq-server	22.04 LTS jammy	Fixed 3.8.9-3ubuntu1
	21.10 impish	Fixed 3.8.9-3ubuntu1
	21.04 hirsute	Fixed 3.8.9-2ubuntu0.1
	20.10 groovy	Fixed 3.8.5-1ubuntu0.2
	20.04 LTS focal	Fixed 3.8.2-0ubuntu1.3
	18.04 LTS bionic	Fixed 3.6.10-1ubuntu0.5
	16.04 LTS xenial	Fixed 3.5.7-1ubuntu0.16.04.4+esm1
	14.04 LTS trusty	Not in release

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Notes

leosilva

code affected in bionic is in deps/rabbitmq_amqp1_0/src/rabbit_amqp1_0_binary_parser.erl in xenial in plugins-src/rabbitmq-amqp1.0/src/rabbit_amqp1_0_binary_parser.erl.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
rabbitmq-server	Upstream: 626d521

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-5004-1
RabbitMQ vulnerabilities
24 June 2021