CVE-2021-22394 : Exploit Details and Defense Strategies

A buffer overflow vulnerability in Huawei smartphones running EMUI, Magic UI, and HarmonyOS could lead to Denial of Service (DoS) attacks. This vulnerability affects various versions of the mentioned software.

Understanding CVE-2021-22394

This CVE describes a buffer overflow vulnerability in Huawei smartphones that could result in DoS attacks during Multi-Screen Collaboration.

What is CVE-2021-22394?

CVE-2021-22394 is a security flaw present in Huawei smartphones, specifically affecting EMUI, Magic UI, and HarmonyOS. The vulnerability could be exploited to trigger DoS attacks on apps during Multi-Screen Collaboration.

The Impact of CVE-2021-22394

The impact of this vulnerability is the potential disruption of app services on affected Huawei smartphones, leading to DoS conditions during Multi-Screen Collaboration.

Technical Details of CVE-2021-22394

The technical details of CVE-2021-22394 include:

Vulnerability Description

The vulnerability is related to a buffer overflow issue in Huawei smartphones, allowing malicious actors to disrupt app functionality.

Affected Systems and Versions

EMUI versions 11.0.0, 10.1.1, 10.1.0
Magic UI versions 4.0.0, 3.1.1, 3.1.0
HarmonyOS version 2.0

Exploitation Mechanism

The vulnerability can be exploited by crafting malicious inputs to trigger the buffer overflow, leading to a DoS attack during Multi-Screen Collaboration.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-22394, follow these steps:

Immediate Steps to Take

Update your Huawei smartphone to the latest firmware to patch the vulnerability. Avoid unknown or untrusted sources and applications.

Long-Term Security Practices

Regularly update your device's software and follow Huawei's security bulletins for emerging threats and patches.

Patching and Updates

Apply software updates provided by Huawei to address security vulnerabilities and enhance the overall security of your device.