NULL Pointer Dereference Vulnerability in Eclipse Mosquitto MQTT Broker
CVE-2021-28166

6.5MEDIUM

Key Information:

Vendor

The Eclipse Foundation

Status
Eclipse Mosquitto
Vendor
CVE Published:
7 April 2021

What is CVE-2021-28166?

In Eclipse Mosquitto versions 2.0.0 through 2.0.9, a NULL pointer dereference occurs when an authenticated client, which connects using MQTT v5, sends a specially crafted CONNACK message to the broker. This vulnerability could lead to service disruptions and compromises the integrity of the messaging service.

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Affected Version(s)

Eclipse Mosquitto 2.0

Eclipse Mosquitto <= 2.0.9

References

https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608
x_refsource_CONFIRM

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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