PT-2021-20058 · Emq · Emq X Broker

Jonathan Knudsen · Published 2021-06-08 · Updated 2021-06-16 · CVE-2021-33175

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 EMQ X Broker versions prior to 4.2.8

Description The issue is related to the handling of untrusted inputs, which causes excessive memory consumption. This results in a denial of service attack, where the message broker consumes large amounts of memory, leading to the application being terminated by the operating system.

Recommendations For EMQ X Broker versions prior to 4.2.8, update to version 4.2.8 or later to resolve the issue. As a temporary workaround, consider restricting the handling of untrusted inputs to minimize the risk of excessive memory consumption.

Fix

Deserialization of Untrusted Data

Allocation of Resources Without Limits

Weakness Enumeration

CWE-502

CWE-770

Related Identifiers

CVE-2021-33175

Affected Products

Emq X Broker

References · 4

• https://synopsys.com/blogs/software-security/cyrc-advisory-rabbitmq-emqx-vernemq · Patch
• https://osv.dev/vulnerability/CVE-2021-33175 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-33175 · Security Note
• https://t.me/cvenotify/15849 · Telegram Post