CVE-2017-7653

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.

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.83% Top 30%
Vendor Advisory debian.org Vendor Advisory ubuntu.com
Affected: The Eclipse Foundation Eclipse Mosquitto
Published at:
Updated at:

References

Link Tags
https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113 issue tracking third party advisory
http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf third party advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html third party advisory mailing list
https://www.debian.org/security/2018/dsa-4325 third party advisory vendor advisory
https://usn.ubuntu.com/4023-1/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-7653?
CVE-2017-7653 has been scored as a medium severity vulnerability.
How to fix CVE-2017-7653?
To fix CVE-2017-7653, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7653 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-7653 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7653?
CVE-2017-7653 affects The Eclipse Foundation Eclipse Mosquitto.
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