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CVE-2021-22116

Published: 8 June 2021

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.

Notes

AuthorNote
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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
rabbitmq-server
Launchpad, Ubuntu, Debian
bionic
Released (3.6.10-1ubuntu0.5)
focal
Released (3.8.2-0ubuntu1.3)
groovy
Released (3.8.5-1ubuntu0.2)
hirsute
Released (3.8.9-2ubuntu0.1)
jammy
Released (3.8.9-3ubuntu1)
trusty Does not exist

upstream Needs triage

xenial
Released (3.5.7-1ubuntu0.16.04.4+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
impish
Released (3.8.9-3ubuntu1)
Patches:
upstream: https://github.com/rabbitmq/rabbitmq-server/commit/626d5219115d087a2695c0eb243c7ddb7e154563

Severity score breakdown

Parameter Value
Base score 7.5
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