emqx NanoMQ 0.17.2 mqtt_msg.c nni_mqtt_msg_get_publish_property use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in emqx NanoMQ 0.17.2. It has been rated as problematic. This vulnerability affects the function nni_mqtt_msg_get_publish_property of the file mqtt_msg.c. This manipulation causes use after free. This vulnerability is handled as CVE-2023-33657. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in emqx NanoMQ 0.17.2. It has been declared as problematic. Affected by this vulnerability is the function nni_mqtt_msg_get_publish_property of the file mqtt_msg.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect availability. The summary by CVE is:

A use-after-free vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function nni_mqtt_msg_get_publish_property() in the file mqtt_msg.c. This vulnerability is caused by improper data tracing, and an attacker could exploit it to cause a denial of service attack.

The weakness was released 06/08/2023 as 1165. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2023-33657 since 05/22/2023. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-37813). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

05/22/2023 🔍
06/08/2023 +17 days 🔍
06/08/2023 +0 days 🔍
01/05/2026 +942 days 🔍

Sourcesinfo

Product: github.com

Advisory: 1165
Status: Confirmed

CVE: CVE-2023-33657 (🔍)
GCVE (CVE): GCVE-0-2023-33657
GCVE (VulDB): GCVE-100-231091
EUVD: 🔍

Entryinfo

Created: 06/08/2023 17:09
Updated: 01/05/2026 15:23
Changes: 06/08/2023 17:09 (42), 07/07/2023 10:04 (11), 01/06/2025 22:44 (26), 01/05/2026 15:23 (1)
Complete: 🔍
Cache ID: 216::103

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