VDB-231087 · CVE-2023-33658 · Issue 1153

emqx NanoMQ 0.17.2 message.c nni_msg_get_pub_pid denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in emqx NanoMQ 0.17.2 and classified as problematic. Affected is the function nni_msg_get_pub_pid of the file message.c. Performing a manipulation results in denial of service. This vulnerability is reported as CVE-2023-33658. No exploit exists. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in emqx NanoMQ 0.17.2. This affects the function nni_msg_get_pub_pid of the file message.c. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

A heap buffer overflow vulnerability exists in NanoMQ 0.17.2. The vulnerability can be triggered by calling the function nni_msg_get_pub_pid() in the file message.c. An attacker could exploit this vulnerability to cause a denial of service attack.

The weakness was disclosed 06/08/2023 as 1153. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2023-33658 since 05/22/2023. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 657e6c81c474bdee0e6413483b990e90610030c1 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-2023-37814). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

emqx

Name

NanoMQ

Version

0.17.2

License

open-source

Website

Product: https://github.com/emqx/nanomq/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 657e6c81c474bdee0e6413483b990e90610030c1

Timelineinfo

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

Sourcesinfo

Product: github.com

Advisory: 1153
Status: Confirmed

CVE: CVE-2023-33658 (🔍)
GCVE (CVE): GCVE-0-2023-33658
GCVE (VulDB): GCVE-100-231087
EUVD: 🔍

Entryinfo

Created: 06/08/2023 14:39
Updated: 01/05/2026 15:23
Changes: 06/08/2023 14:39 (43), 07/07/2023 09:53 (11), 01/06/2025 22:44 (26), 01/05/2026 15:23 (1)
Complete: 🔍
Cache ID: 216::103