CVE-2021-34432 : In Eclipse Mosquitto versions 2.07 and earlier, the server will crash if the cli

In Eclipse Mosquitto versions 2.07 and earlier, the server will crash if the client tries to send a PUBLISH packet with topic length = 0.

Published 2021-07-27 16:15:08

Updated 2021-08-17 15:33:25

Source Eclipse Foundation

View at NVD, CVE.org

Vulnerability category: Input validation

Products affected by CVE-2021-34432

Eclipse » Mosquitto
Versions up to, including, (<=) 2.0.7
cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.09%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 38 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by: emo@eclipse.org (Secondary)

https://bugs.eclipse.org/bugs/show_bug.cgi?id=574141

574141 – (CVE-2021-34432) Remote crash in Mosquitto 2.0.7 when publish topic length is 0
Exploit;Issue Tracking;Patch;Vendor Advisory

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