CVE-2021-39998 : Security Advisory and Response
Discover details of CVE-2021-39998, a vulnerability impacting Huawei smartphones running EMUI, Magic UI, and HarmonyOS. Learn about the impact, affected versions, and mitigation steps.
This CVE-2021-39998 article provides details about a vulnerability in Huawei's EMUI, Magic UI, and HarmonyOS, affecting smartphones.
Understanding CVE-2021-39998
This section explains the vulnerability and its impact.
What is CVE-2021-39998?
The vulnerability involves APIs being concurrently called multiple times in HwConnectivityExService in smartphones, potentially leading to system crashes and restarts.
The Impact of CVE-2021-39998
The exploitation of this vulnerability can result in system instability, crashes, and restarts on affected devices.
Technical Details of CVE-2021-39998
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability arises from the concurrent calling of APIs in HwConnectivityExService on Huawei smartphones.
Affected Systems and Versions
- Products: EMUI, Magic UI, HarmonyOS
- Versions:
- EMUI 11.0.0, EMUI 11.0.1
- Magic UI 4.0.0
- HarmonyOS 2.0
Exploitation Mechanism
The vulnerability is exploited by concurrently calling APIs in HwConnectivityExService, triggering system crashes and restarts.
Mitigation and Prevention
Learn how to address and prevent the CVE-2021-39998 vulnerability.
Immediate Steps to Take
- Monitor security bulletins and updates from Huawei.
- Apply patches and updates promptly.
Long-Term Security Practices
- Employ security best practices when using and updating devices.
- Conduct regular security audits and assessments.
Patching and Updates
- Stay informed about security patches and updates from Huawei.
- Apply recommended patches to fix the vulnerability on affected devices.