PT-2021-20059 · Unknown · Vernemq Mqtt Broker

Jonathan Knudsen · Published 2021-06-08 · Updated 2021-06-21 · CVE-2021-33176

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions VerneMQ MQTT Broker versions prior to 1.12.0

Description The issue is related to a denial of service attack due to excessive memory consumption. This occurs when the message broker handles untrusted inputs, causing it to consume large amounts of memory. As a result, the application is terminated by the operating system.

Recommendations For VerneMQ MQTT Broker versions prior to 1.12.0, update to version 1.12.0 or later to resolve the issue. As a temporary workaround, consider implementing input validation to restrict the handling of untrusted inputs.

Fix

Deserialization of Untrusted Data

Allocation of Resources Without Limits

Weakness Enumeration

CWE-502

CWE-770

Related Identifiers

CVE-2021-33176

Affected Products

Vernemq Mqtt Broker

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-33176 · Security Note
• https://osv.dev/vulnerability/CVE-2021-33176 · Vendor Advisory
• https://synopsys.com/blogs/software-security/cyrc-advisory-rabbitmq-emqx-vernemq · Note
• https://t.me/cvenotify/15848 · Telegram Post