CVE-2021-28166: Null Pointer Dereference
First published: Wed Apr 07 2021(Updated: )
In Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.
Credit: emo@eclipse.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| TIBCO Messaging - Eclipse Mosquitto Distribution - Core | >=2.0.0<=2.0.9 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-28166?
CVE-2021-28166 has a CVSS score indicating a medium severity vulnerability.
How do I fix CVE-2021-28166?
To fix CVE-2021-28166, upgrade Eclipse Mosquitto to version 2.0.10 or later.
Which versions of Eclipse Mosquitto are affected by CVE-2021-28166?
Eclipse Mosquitto versions 2.0.0 to 2.0.9 are affected by CVE-2021-28166.
What type of attack does CVE-2021-28166 enable?
CVE-2021-28166 can allow an authenticated client to crash the broker through a crafted CONNACK message.
Is CVE-2021-28166 a remote code execution vulnerability?
CVE-2021-28166 does not enable remote code execution; it results in a NULL pointer dereference.
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- agent/severity
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- vendor/eclipse
- canonical/tibco messaging - eclipse mosquitto distribution - core
- version/tibco messaging - eclipse mosquitto distribution - core/2.0.0
- version/tibco messaging - eclipse mosquitto distribution - core/2.0.9