Vulnerability Report

CVE-2021-34431

Title: Memory leak via crafted CONNECT message in Eclipse Mosquitto

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2021-34431.

CWE Category CWE-401

Published Date Jul 22, 2021

Modified Date Nov 21, 2024

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

0.37%

Vulnerability Summary

CVE-2021-34431: 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.

Impacted Vendors

eclipse 1

Reference Links

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

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:S/C:N/I:N/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-34431 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

July 22, 2021 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.