PT-2020-13729 · Mqtt · Mqtt

Published 2020-06-04 · Updated 2020-06-10 · CVE-2020-13849

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 MQTT protocol version 3.1.1

Description The issue allows remote attackers to cause a denial of service, resulting in the loss of the ability to establish new connections. This is demonstrated by SlowITe, which exploits the requirement for a server to set a timeout value of 1.5 times the Keep-Alive value specified by a client.

Recommendations For MQTT protocol version 3.1.1, consider implementing measures to prevent abuse of the Keep-Alive value, such as limiting the maximum Keep-Alive value that can be specified by clients or implementing rate limiting on new connections. As a temporary workaround, consider restricting the ability of clients to specify high Keep-Alive values until a more permanent solution is available.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2020-13849

OPENSUSE-SU-2024:11575-1

Affected Products

Mqtt

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2020-13849 · Security Note
• https://osv.dev/vulnerability/CVE-2020-13849 · Vendor Advisory
• https://t.me/cvenotify/4224 · Telegram Post
• https://mdpi.com/1424-8220/20/10/2932 · Note
• https://doi.org/10.3390/s20102932 · Note