CVE-2021-28166: Null Pointer Dereference
Published Apr 7, 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.
Affected Software
1 affected component
Eclipse Mosquitto>=2.0.0<=2.0.9
Remediation
Patch Available
Event History
Apr 7, 2021
CVE Published
via MITRE·06:50 PM
Data Sourced
via MITRE·06:50 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What is the severity of CVE-2021-28166?
CVE-2021-28166 has a CVSS score indicating a medium severity vulnerability.
2
How do I fix CVE-2021-28166?
To fix CVE-2021-28166, upgrade Eclipse Mosquitto to version 2.0.10 or later.
3
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.
4
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.
5
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.