USN-8437-1: rabbitmq-c vulnerabilities

Publication date

16 June 2026

Overview

Several security issues were fixed in rabbitmq-c.


Packages

Details

It was discovered that rabbitmq-c exposed credentials in command-line
arguments under certain circumstances. A local attacker could possibly use
this issue to obtain sensitive information. This issue only affected Ubuntu
22.04 LTS and Ubuntu 24.04 LTS. (CVE-2023-35789)

It was discovered that rabbitmq-c incorrectly handled AMQP frame lengths
under certain circumstances, which could lead to an out-of-bounds read. A
remote attacker could possibly use this issue to cause rabbitmq-c to crash,
resulting in a denial of service. (CVE-2026-44235)

It was discovered that rabbitmq-c incorrectly handled AMQP login handshakes
under certain circumstances, which could lead to a heap buffer overflow. A
remote attacker could possibly use this issue to cause rabbitmq-c to crash,
resulting in a denial of service, or execute arbitrary code.
(

It was discovered that rabbitmq-c exposed credentials in command-line
arguments under certain circumstances. A local attacker could possibly use
this issue to obtain sensitive information. This issue only affected Ubuntu
22.04 LTS and Ubuntu 24.04 LTS. (CVE-2023-35789)

It was discovered that rabbitmq-c incorrectly handled AMQP frame lengths
under certain circumstances, which could lead to an out-of-bounds read. A
remote attacker could possibly use this issue to cause rabbitmq-c to crash,
resulting in a denial of service. (CVE-2026-44235)

It was discovered that rabbitmq-c incorrectly handled AMQP login handshakes
under certain circumstances, which could lead to a heap buffer overflow. A
remote attacker could possibly use this issue to cause rabbitmq-c to crash,
resulting in a denial of service, or execute arbitrary code.
(CVE-2026-44236)


Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
26.04 LTS resolute amqp-tools –  0.15.0-1ubuntu0.26.04.1
librabbitmq4 –  0.15.0-1ubuntu0.26.04.1
25.10 questing amqp-tools –  0.15.0-1ubuntu0.25.10.1
librabbitmq4 –  0.15.0-1ubuntu0.25.10.1
24.04 LTS noble amqp-tools –  0.11.0-1ubuntu0.1
librabbitmq4 –  0.11.0-1ubuntu0.1
22.04 LTS jammy amqp-tools –  0.10.0-1ubuntu2.1
librabbitmq4 –  0.10.0-1ubuntu2.1

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›