IoTFuzzSentry: A Protocol Guided Mutation Based Fuzzer for Automatic Vulnerability Testing in Commercial IoT Devices

• URL: http://arxiv.org/abs/2509.09158v1
• Date: Thu, 11 Sep 2025 05:40:18 GMT
• Title: IoTFuzzSentry: A Protocol Guided Mutation Based Fuzzer for Automatic Vulnerability Testing in Commercial IoT Devices
• Authors: Priyanka Rushikesh Chaudhary, Rajib Ranjan Maiti,
• Abstract summary: We present a mutation-based fuzzing tool, named IoTFuzzSentry, to identify specific non-trivial vulnerabilities in commercial IoT devices.<n>We show how these vulnerabilities can be exploited in real-world scenarios.<n>We have responsibly disclosed all these vulnerabilities to the respective vendors.
• Score: 1.5970777144214099
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Protocol fuzzing is a scalable and cost-effective technique for identifying security vulnerabilities in deployed Internet of Things devices. During their operational phase, IoT devices often run lightweight servers to handle user interactions, such as video streaming or image capture in smart cameras. Implementation flaws in transport or application-layer security mechanisms can expose IoT devices to a range of threats, including unauthorized access and data leakage. This paper addresses the challenge of uncovering such vulnerabilities by leveraging protocol fuzzing techniques that inject crafted transport and application-layer packets into IoT communications. We present a mutation-based fuzzing tool, named IoTFuzzSentry, to identify specific non-trivial vulnerabilities in commercial IoT devices. We further demonstrate how these vulnerabilities can be exploited in real-world scenarios. We integrated our fuzzing tool into a well-known testing tool Cotopaxi and evaluated it with commercial-off-the-shelf IoT devices such as IP cameras and Smart Plug. Our evaluation revealed vulnerabilities categorized into 4 types (IoT Access Credential Leakage, Sneak IoT Live Video Stream, Creep IoT Live Image, IoT Command Injection) and we show their exploits using three IoT devices. We have responsibly disclosed all these vulnerabilities to the respective vendors. So far, we have published two CVEs, CVE-2024-41623 and CVE-2024-42531, and one is awaiting. To extend the applicability, we have investigated the traffic of six additional IoT devices and our analysis shows that these devices can have similar vulnerabilities, due to the presence of a similar set of application protocols. We believe that IoTFuzzSentry has the potential to discover unconventional security threats and allow IoT vendors to strengthen the security of their commercialized IoT devices automatically with negligible overhead.

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