CVE-2017-7653

Name: CVE-2017-7653
Creator: NVD / NIST
Published: 2018-06-05T20:29:00.293+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.45%

Last modified Jun 17, 2026

CVE-2017-7653 is a vulnerability of currently unknown severity. The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.. EPSS estimates a 1.45% chance of exploitation in the next 30 days.

Description

The Eclipse Mosquitto broker up to version 1.4.15 does not reject strings that are not valid UTF-8. A malicious client could cause other clients that do reject invalid UTF-8 strings to disconnect themselves from the broker by sending a topic string which is not valid UTF-8, and so cause a denial of service for the clients.

Metrics

EPSS Probability

1.45%

70.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Eclipse	Mosquitto	<= 1.4.15
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdfThird Party Advisory
https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00036.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4023-1/
https://www.debian.org/security/2018/dsa-4325Third Party Advisory
http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdfThird Party Advisory
https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00036.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/4023-1/
https://www.debian.org/security/2018/dsa-4325Third Party Advisory

Timeline

Published: Jun 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-7653?

How severe is CVE-2017-7653?

Severity scoring for CVE-2017-7653 is pending analysis. The EPSS model estimates a 1.45% probability of exploitation in the next 30 days.

How do I fix CVE-2017-7653?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-7653?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST