← All notices | Source (USN-8724-1) | Text version

QSN-8724-1: rabbitmq-c vulnerabilities

September 3, 2026

Summary

Several security issues were fixed in rabbitmq-c.

Details

It was discovered that the rabbitmq-c command-line tools only accepted credentials on the command line, making them visible to other local users through the process list. An attacker could possibly use this to obtain sensitive credentials. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2023-35789)

It was discovered that rabbitmq-c did not correctly compute AMQP frame lengths, leading to a size_t underflow. A remote attacker could possibly use this to cause rabbitmq-c to crash, resulting in a denial of service, or possibly expose sensitive information. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2026-44235)

It was discovered that rabbitmq-c did not properly validate the frame size during the AMQP login handshake. A remote attacker could possibly use this to cause a heap buffer overflow, resulting in a denial of service or possibly the execution of arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2026-44236)

It was discovered that rabbitmq-c did not correctly validate the length of decoded bytes fields, leading to an integer overflow in a bounds check on 32-bit systems. A remote attacker controlling a broker, or able to intercept an unencrypted connection, could possibly use this to cause an out-of-bounds read, resulting in a denial of service or the exposure of sensitive information. (CVE-2026-59986)

It was discovered that rabbitmq-c did not validate the body fragment length when serialising an AMQP body frame with the amqp_send_frame() API. An attacker could possibly use this to cause a heap buffer overflow, resulting in a denial of service (application crash) or possibly the execution of arbitrary code. This issue did not affect Ubuntu 14.04 LTS. (CVE-2026-61547)

Affected QuantaStor releases

ReleasePlatformPackageExposureShipped versionFixed versionStatus
6.9.1.001Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.20.10.0-1ubuntu2.2Fixed in this release
6.9.0.464Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.20.10.0-1ubuntu2.2Fixed in this release
6.8.6.015Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.20.10.0-1ubuntu2.2Fixed in this release
6.8.5.018Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.10.10.0-1ubuntu2.2Fixed by QuantaStor security update
6.8.4.038Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.10.10.0-1ubuntu2.2Fixed by QuantaStor security update
6.8.3.018Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.10.10.0-1ubuntu2.2Fixed by QuantaStor security update
6.8.2.002Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.10.10.0-1ubuntu2.2Fixed by QuantaStor security update
6.8.1.007Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.10.10.0-1ubuntu2.2Fixed by QuantaStor security update
6.8.0.205Ubuntu 22.04 LTSlibrabbitmq4Internally-facing0.10.0-1ubuntu2.10.10.0-1ubuntu2.2Fixed by QuantaStor security update

Internally-facing: only accessible when logged into the QuantaStor console/ssh as the qadmin administrative sudo user; generally lower priority. Externally-facing: part of a service the storage platform presents on the network (or the kernel), so potentially reachable over the network.

CVEs

CVE-2026-59986, CVE-2026-61547, CVE-2023-35789, CVE-2026-44235, CVE-2026-44236

References

https://ubuntu.com/security/notices/USN-8724-1

https://nvd.nist.gov/vuln/detail/CVE-2026-59986

https://nvd.nist.gov/vuln/detail/CVE-2026-61547

https://nvd.nist.gov/vuln/detail/CVE-2023-35789

https://nvd.nist.gov/vuln/detail/CVE-2026-44235

https://nvd.nist.gov/vuln/detail/CVE-2026-44236

Update

Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:

PlatformPackageVersion
bioniclibrabbitmq0.8.0-1ubuntu0.18.04.2+esm1
Ubuntu 20.04 LTSlibrabbitmq0.10.0-1ubuntu0.20.04.1~esm1
Ubuntu 22.04 LTSlibrabbitmq0.10.0-1ubuntu2.2
Ubuntu 24.04 LTSlibrabbitmq0.11.0-1ubuntu0.2
resolutelibrabbitmq0.15.0-1ubuntu0.26.04.2
trustylibrabbitmq0.4.1-1ubuntu0.1~esm2
xeniallibrabbitmq0.7.1-1ubuntu0.2+esm1