CVE-2021-34431 - CVE House
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Status published Medium CVE-2021-34431

In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Thanks to Kathrin Kleinhammer of OTARIS Interactive Services GmbH for discovering and reporting this issue.

Affected Vendor

The Eclipse Foundation

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Affected Software

Eclipse Mosquitto
Vulnerable Versions:
1.6, unspecified

Timeline

Official Publish: July 22nd, 2021
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)