CVE-2023-0809

mosquitto: memory leak leads to unresponsive broker

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

In Mosquitto before 2.0.16, excessive memory is allocated based on malicious initial packets that are not CONNECT packets.

En Mosquitto anterior a 2.0.16, el exceso de memoria se asigna en función de paquetes iniciales maliciosos que no son paquetes CONNECT.

A memory leak vulnerability was found in Eclipse Mosquitto. This issue is triggered by malicious initial packets or certain client actions and may allow a remote attacker to the deplete system resources causing memory exhaustion, leading to a disruption in services and a denial of service condition.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-02-13 CVE Reserved
2023-10-02 CVE Published
2024-09-20 CVE Updated
2024-11-03 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-401: Missing Release of Memory after Effective Lifetime
CWE-770: Allocation of Resources Without Limits or Throttling
CWE-789: Memory Allocation with Excessive Size Value

CAPEC

CAPEC-130: Excessive Allocation

References (4)

URL	Tag	Source
https://mosquitto.org/blog/2023/08/version-2-0-16-released	Release Notes
https://security.gentoo.org/glsa/202401-09

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2023-0809	2024-02-29
https://bugzilla.redhat.com/show_bug.cgi?id=2236882	2024-02-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Eclipse Search vendor "Eclipse"		Mosquitto Search vendor "Eclipse" for product "Mosquitto"				< 2.0.16 Search vendor "Eclipse" for product "Mosquitto" and version " < 2.0.16"		-		Affected