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EclipseCVE-2021-34431

HistoryJul 22, 2021 - 2:15 p.m.

CVE-2021-34431

2021-07-2214:15:08

CWE-401

eclipse

web.nvd.nist.gov

eclipse

mosquitto

cve-2021-34431

mqtt

memory leak

dos attack

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.2

Confidence

High

EPSS

0.001

Percentile

27.3%

JSON

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.

Affected configurations

Nvd

Node

eclipsemosquittoRange1.6–2.0.10

VendorProductVersionCPE
eclipsemosquitto*cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
eclipse	mosquitto	*	cpe:2.3:a:eclipse:mosquitto::::::::

CNA Affected

[
  {
    "product": "Eclipse Mosquitto",
    "vendor": "The Eclipse Foundation",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "1.6",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "2.0.10",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]