The azure-c-shared-utility is a C library for AMQP/MQTT communication to Azure Cloud Services. This library may be used by the Azure IoT C SDK for communication between IoT Hub and IoT Hub devices. An attacker can cause an integer wraparound or under-allocation or heap buffer overflow due to vulnerabilities in parameter checking mechanism, by exploiting the buffer length parameter in Azure C SDK, which may lead to remote code execution. Requirements for RCE are 1. Compromised Azure account allowing malformed payloads to be sent to the device via IoT Hub service, 2. By passing IoT hub service max message payload limit of 128KB, and 3. Ability to overwrite code space with remote code. Fixed in commit https://github.com/Azure/azure-c-shared-utility/commit/1129147c38ac02ad974c4c701a1e01b2141b9fe2.
History

Mon, 15 Dec 2025 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft azure C Shared Utility
CPEs cpe:2.3:a:microsoft:azure_c_shared_utility:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft azure C Shared Utility

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-04T11:26:22.203Z

Reserved: 2024-03-18T17:07:00.095Z

Link: CVE-2024-29195

cve-icon Vulnrichment

Updated: 2024-08-02T01:10:55.203Z

cve-icon NVD

Status : Analyzed

Published: 2024-03-26T03:15:13.333

Modified: 2025-12-15T21:33:05.817

Link: CVE-2024-29195

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.