CVE-2021-36997 : Vulnerability Insights and Analysis
Learn about CVE-2021-36997, a memory error vulnerability in Huawei smartphones due to unlimited image size parsing. Understand the impact, affected systems, exploitation, mitigation, and prevention.
This article provides an overview of CVE-2021-36997, a vulnerability in Huawei smartphones related to memory error when parsing images with unlimited size. Learn about the impact, affected systems, exploitation, mitigation, and prevention methods.
Understanding CVE-2021-36997
CVE-2021-36997 is a vulnerability in Huawei smartphones that allows attackers to exploit a memory error by parsing images with unlimited size. Successful exploitation may lead to unexpected exits in Gallery or Files app.
What is CVE-2021-36997?
CVE-2021-36997 involves a memory error in Huawei smartphones when dealing with images of unlimited size, potentially leading to unexpected exits in Gallery or Files app.
The Impact of CVE-2021-36997
The vulnerability, if exploited, can cause disruptions in the normal functioning of Gallery or Files app on affected Huawei smartphones.
Technical Details of CVE-2021-36997
CVE-2021-36997 is classified as a Heap-based Buffer Overflow vulnerability affecting specific versions of EMUI and Magic UI on Huawei smartphones.
Vulnerability Description
The vulnerability arises due to a memory error when processing images of unlimited size on Huawei smartphones, leading to unexpected exits in Gallery or Files app.
Affected Systems and Versions
EMUI versions 11.0.0 and 10.1.1, as well as Magic UI versions 4.0.0 and 3.1.1 are affected by CVE-2021-36997.
Exploitation Mechanism
Attackers can exploit this vulnerability by providing images with unlimited sizes, triggering the memory error and causing the Gallery or Files app to exit unexpectedly.
Mitigation and Prevention
To protect against CVE-2021-36997, users should take immediate steps and adopt long-term security practices, along with ensuring timely patching and updates.
Immediate Steps to Take
Users are advised to avoid opening untrusted images on Huawei smartphones and regularly update their devices to the latest available security patches.
Long-Term Security Practices
Implementing secure image processing practices and staying vigilant against potential image-based exploits can enhance the security posture of Huawei smartphones.
Patching and Updates
Huawei users should closely monitor official security bulletins and promptly apply recommended patches to safeguard their devices against CVE-2021-36997.