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.
Metrics
Affected Vendors & Products
References
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 |
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2024-08-04T11:26:22.203Z
Reserved: 2024-03-18T17:07:00.095Z
Link: CVE-2024-29195
Updated: 2024-08-02T01:10:55.203Z
Status : Analyzed
Published: 2024-03-26T03:15:13.333
Modified: 2025-12-15T21:33:05.817
Link: CVE-2024-29195
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OpenCVE Enrichment
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