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CVE-2021-28166

Good to know:

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Date: April 7, 2021

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.

Language: C

Severity Score

Related Resources (6)

https://people.canonical.com/~ubuntu-security/cve/CVE-2021-28166
https://nvd.nist.gov/vuln/detail/CVE-2021-28166
https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608
https://security.alpinelinux.org/vuln/CVE-2021-28166
https://security-tracker.debian.org/tracker/CVE-2021-28166
https://www.mend.io/vulnerability-database/CVE-2021-28166

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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