CVE-2021-40053 : Security Advisory and Response

A permission control vulnerability in the Nearby module of HarmonyOS, EMUI, and Magic UI has been identified, potentially impacting availability and integrity.

Understanding CVE-2021-40053

This CVE pertains to a vulnerability affecting multiple software versions of HarmonyOS, EMUI, and Magic UI.

What is CVE-2021-40053?

CVE ID: CVE-2021-40053
Published Date: March 7, 2022
Last Updated: September 16, 2022

A permission control vulnerability in the Nearby module can be exploited to compromise system availability and integrity.

The Impact of CVE-2021-40053

Successful exploitation of the vulnerability can lead to:

Compromised availability of the system
Impact on system integrity

Technical Details of CVE-2021-40053

The technical aspects of the vulnerability are as follows:

Vulnerability Description

Description: Permission control vulnerability in the Nearby module

Affected Systems and Versions

The vulnerability affects the following systems and versions:

HarmonyOS: HarmonyOS 2.0, HarmonyOS 2.1
EMUI: EMUI 11.0.0, EMUI 10.1.1, EMUI 10.1.0, EMUI 10.0.0
Magic UI: Magic UI 4.0.0, Magic UI 3.1.1, Magic UI 3.1.0, Magic UI 3.0.0

Exploitation Mechanism

The vulnerability can be exploited through:

Permission control manipulation within the Nearby module

Mitigation and Prevention

It is crucial to take immediate steps to address the CVE and implement long-term security measures.

Immediate Steps to Take

Apply security patches provided by the software vendor
Restrict network access to vulnerable systems
Monitor for any suspicious activities

Long-Term Security Practices

Regular security assessments and audits
Employee training on security best practices
Implement least privilege access control

Patching and Updates

Regularly check for software updates and apply them promptly
Stay informed about security advisories from the vendor
Consider implementing intrusion detection systems and firewalls