CVE-2021-31642 : Vulnerability Insights and Analysis
Learn about the CVE-2021-31642 vulnerability in CHIYU Technology IoT devices, causing denial of service by exploiting an integer overflow. Find out the impact, affected systems, and mitigation steps.
A denial of service vulnerability exists in IoT devices from CHIYU Technology, potentially impacting devices such as BIOSENSE, Webpass, BF-630, BF-631, and SEMAC. Exploiting an integer overflow in these devices by sending an unexpected integer (>32 bits) on the page parameter can crash the web portal, rendering it unavailable until a reboot.
Understanding CVE-2021-31642
This section provides an overview of the CVE-2021-31642 vulnerability in CHIYU Technology IoT devices.
What is CVE-2021-31642?
The CVE-2021-31642 vulnerability involves an integer overflow in CHIYU Technology IoT devices, leading to a denial of service condition when triggered by sending a specific integer on the page parameter.
The Impact of CVE-2021-31642
The impact of CVE-2021-31642 is the crashing of the web portal on affected CHIYU devices when exploited, making them unavailable until a reboot is performed.
Technical Details of CVE-2021-31642
In this section, we delve into the technical aspects of the CVE-2021-31642 vulnerability.
Vulnerability Description
The vulnerability arises due to an integer overflow, which can be exploited by sending a specially crafted integer (>32 bits) on the page parameter.
Affected Systems and Versions
CHIYU Technology IoT devices, including BIOSENSE, Webpass, BF-630, BF-631, and SEMAC, are impacted by this vulnerability.
Exploitation Mechanism
The exploitation involves sending an unexpected integer (>32 bits) on the page parameter of the affected devices, triggering a denial of service condition.
Mitigation and Prevention
This section outlines measures to mitigate and prevent the exploitation of CVE-2021-31642.
Immediate Steps to Take
Device users should update the firmware to the latest version provided by CHIYU Technology to patch the vulnerability.
Long-Term Security Practices
Implementing network segmentation, access control, and regular security updates can enhance the overall security posture against such vulnerabilities.
Patching and Updates
Regularly check for firmware updates from CHIYU Technology and promptly apply them to ensure protection against known vulnerabilities.