Skip to content

Improper Input Validation and Buffer Over-read in mqtt-packet

High severity GitHub Reviewed Published May 14, 2019 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

npm mqtt-packet (npm)

Affected versions

< 3.5.1
>= 4.0.0, < 4.1.3
>= 5.0.0, < 5.6.1
>= 6.0.0, < 6.1.2

Patched versions

3.5.1
4.1.3
5.6.1
6.1.2

Description

A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions < 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.

References

Published by the National Vulnerability Database May 6, 2019
Reviewed May 10, 2019
Published to the GitHub Advisory Database May 14, 2019
Last updated Feb 1, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.096%
(42nd percentile)

Weaknesses

CVE ID

CVE-2019-5432

GHSA ID

GHSA-wv67-9jq7-8r69

Source code

No known source code
Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.