Mosquitto up to 2.0.15 CONNECT Packet memory allocation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Mosquitto up to 2.0.15. The impacted element is an unknown function of the component CONNECT Packet Handler. This manipulation causes memory allocation. This vulnerability is registered as CVE-2023-0809. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Mosquitto up to 2.0.15 and classified as problematic. Affected by this vulnerability is an unknown code of the component CONNECT Packet Handler. The manipulation with an unknown input leads to a memory allocation vulnerability. The CWE definition for the vulnerability is CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. As an impact it is known to affect availability. The summary by CVE is:

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

The weakness was published 10/03/2023. The advisory is shared at mosquitto.org. This vulnerability is known as CVE-2023-0809 since 02/13/2023. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.0.16 eliminates this vulnerability. The upgrade is hosted for download at mosquitto.org.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 5.8
CNA Vector (Eclipse Foundation): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Mosquitto 2.0.16

Timelineinfo

02/13/2023 🔍
10/03/2023 +231 days 🔍
10/03/2023 +0 days 🔍
10/23/2023 +20 days 🔍

Sourcesinfo

Advisory: mosquitto.org
Status: Confirmed

CVE: CVE-2023-0809 (🔍)
GCVE (CVE): GCVE-0-2023-0809
GCVE (VulDB): GCVE-100-241105

Entryinfo

Created: 10/03/2023 08:00
Updated: 10/23/2023 14:24
Changes: 10/03/2023 08:00 (50), 10/23/2023 14:24 (9)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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