CVE-2017-7653: Input Validation
First published: Tue Jun 05 2018(Updated: )
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.
Credit: emo@eclipse.org emo@eclipse.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Eclipse Mosquitto | <=1.4.15 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| ubuntu/mosquitto | <1.4.15-2ubuntu0.18.04.3 | 1.4.15-2ubuntu0.18.04.3 |
| ubuntu/mosquitto | <1.4.15-2ubuntu0.18.10.3 | 1.4.15-2ubuntu0.18.10.3 |
| ubuntu/mosquitto | <1.5.4-1 | 1.5.4-1 |
| ubuntu/mosquitto | <1.4.8-1ubuntu0.16.04.7 | 1.4.8-1ubuntu0.16.04.7 |
| debian/mosquitto | 1.5.7-1+deb10u1 2.0.11-1+deb11u1 2.0.11-1.2+deb12u1 2.0.18-1 |
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Reference Links
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=532113
- https://security-tracker.debian.org/tracker/CVE-2017-7653
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7653
- https://github.com/eclipse/mosquitto/commit/729a09310a7a56fbe5933b70b4588049da1a42b4
- https://security-tracker.debian.org/tracker/CVE-2017-7654
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911266
- https://lists.debian.org/debian-lts-announce/2018/09/msg00036.html
- http://docs.oasis-open.org/mqtt/disallowed-chars/v1.0/disallowed-chars-v1.0.pdf
- https://www.debian.org/security/2018/dsa-4325
- https://usn.ubuntu.com/4023-1/
- https://launchpad.net/bugs/cve/CVE-2017-7653
- https://ubuntu.com/security/notices/USN-4023-1
- https://nvd.nist.gov/vuln/detail/CVE-2017-7653
- https://ubuntu.com/security/CVE-2017-7653
Frequently Asked Questions
What is CVE-2017-7653?
CVE-2017-7653 is a vulnerability in the Eclipse Mosquitto broker up to version 1.4.15 that allows a malicious client to cause a denial of service by sending a topic string that is not valid UTF-8.
How severe is CVE-2017-7653?
CVE-2017-7653 has a severity rating of 5.3 (medium).
How does CVE-2017-7653 affect Eclipse Mosquitto?
CVE-2017-7653 affects Eclipse Mosquitto broker up to version 1.4.15.
How can a malicious client exploit CVE-2017-7653?
A malicious client can exploit CVE-2017-7653 by sending a topic string that is not valid UTF-8, causing other clients to disconnect from the broker.
Are there any remedies for CVE-2017-7653?
Yes, there are remedies available for CVE-2017-7653, such as updating to a fixed version of Eclipse Mosquitto.
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- version/eclipse mosquitto/1.4.15
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