CVE-2021-39990 : What You Need to Know
Learn about CVE-2021-39990, a critical Stack-based Buffer Overflow vulnerability impacting HarmonyOS 2.0 by Huawei. Find out the impact, affected systems, and mitigation steps.
CVE-2021-39990 concerns a Stack-based Buffer Overflow vulnerability in the screen lock module of HarmonyOS version 2.0 by Huawei.
Understanding CVE-2021-39990
This CVE identifies a critical security issue impacting user experience on HarmonyOS devices.
What is CVE-2021-39990?
The vulnerability involves a Stack-based Buffer Overflow in the screen lock module, posing a risk to user experience on Huawei devices running HarmonyOS version 2.0.
The Impact of CVE-2021-39990
Successful exploitation of this vulnerability could significantly impact user experience on affected devices by allowing unauthorized access.
Technical Details of CVE-2021-39990
This section delves into specific technical aspects of the vulnerability.
Vulnerability Description
The screen lock module in HarmonyOS 2.0 has a critical Stack-based Buffer Overflow vulnerability, which, if exploited, can severely impact user experience.
Affected Systems and Versions
- Product: HarmonyOS
- Vendor: Huawei
- Affected Version: 2.0
Exploitation Mechanism
The vulnerability can be exploited through malicious inputs that overrun the buffer in the screen lock module, potentially leading to unauthorized access.
Mitigation and Prevention
Actions to address and prevent exploitation of CVE-2021-39990.
Immediate Steps to Take
- Apply security patches provided by Huawei promptly.
- Monitor official Huawei communications for updates regarding this vulnerability.
Long-Term Security Practices
- Regularly update HarmonyOS to the latest versions.
- Implement strong authentication measures beyond screen lock.
Patching and Updates
Regularly check for and apply security updates and patches released by Huawei to address this vulnerability and enhance device security.