CVE-2017-7653

low-risk
Published 2018-06-05

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.

Do I need to act?

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0.93% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / HIGH complexity

Affected Products (3)

Affected Vendors

Debian Eclipse

References (10)

Third Party Advisory http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf
Issue Tracking https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113
Mailing List https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html
https://usn.ubuntu.com/4023-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4325
Third Party Advisory http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf
Issue Tracking https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113
Mailing List https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html
https://usn.ubuntu.com/4023-1/
Third Party Advisory https://www.debian.org/security/2018/dsa-4325
29
/ 100
low-risk
Severity 17/34 · Moderate
Exploitability 3/34 · Minimal
Exposure 9/34 · Low