CVE-2021-39967 : Vulnerability Insights and Analysis

In this article, you will learn about a vulnerability in Huawei smartphones related to improper broadcast permission settings and its impact on confidentiality.

Understanding CVE-2021-39967

This section provides an overview of the vulnerability affecting Huawei smartphones.

What is CVE-2021-39967?

CVE-2021-39967 is a vulnerability that allows improper obtaining of broadcast information due to incorrect broadcast permission settings in smartphones. Exploiting this vulnerability can result in a breach of service confidentiality.

The Impact of CVE-2021-39967

The vulnerability poses a risk to service confidentiality due to the improper handling of broadcast information. It affects the following Huawei products and versions:

EMUI: 10.1.1, 10.1.0, 10.0.0, 9.1.1, 9.1.0
Magic UI: 3.1.1, 3.1.0, 3.0.0, 2.1.1
HarmonyOS: 2.0

Technical Details of CVE-2021-39967

This section covers the technical aspects of the vulnerability in Huawei devices.

Vulnerability Description

The vulnerability arises from improper broadcast permission settings, enabling unauthorized access to broadcast information in smartphones.

Affected Systems and Versions

The following Huawei products and versions are impacted:

EMUI: 10.1.1, 10.1.0, 10.0.0, 9.1.1, 9.1.0
Magic UI: 3.1.1, 3.1.0, 3.0.0, 2.1.1
HarmonyOS: 2.0

Exploitation Mechanism

Attackers can exploit the vulnerability by leveraging the improper broadcast permission settings to access sensitive broadcast information on the affected devices.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2021-39967.

Immediate Steps to Take

Apply security patches provided by Huawei promptly.
Monitor official Huawei security bulletins for updates and advisories.
Avoid granting unnecessary permissions to applications on your device.

Long-Term Security Practices

Regularly update your device's firmware to stay protected against known vulnerabilities.
Use trusted applications from official sources to minimize security risks.
Educate yourself on cybersecurity best practices to enhance your device's security posture.

Patching and Updates

Ensure that your Huawei device is running the latest software updates and patches to address known security vulnerabilities.