CVE-2021-34431 - Vulnerability Details - OpenCVE

Description

In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.

Published: 2021-07-22

Score: 6.5 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

The Eclipse Foundation

Eclipse Mosquitto

affected

Version	Status	Constraints
`1.6`	affected	< unspecified
`unspecified`	affected	≤ 2.0.10

Configuration 1 [-]

cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-21087	In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker.
Ubuntu USN	USN-6492-1	Mosquitto vulnerabilities

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.0037.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191

History

No history.

Subscriptions

Eclipse Mosquitto

MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2021-07-22T13:45:13.000Z

Updated: 2024-08-04T00:12:50.247Z

Reserved: 2021-06-09T00:00:00.000Z

Link: CVE-2021-34431

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-07-22T14:15:08.050

Modified: 2024-11-21T06:10:23.867

Link: CVE-2021-34431

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-401

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