CVE-2021-39982 : Vulnerability Insights and Analysis

HarmonyOS by Huawei has a vulnerability in the Phone Manager application that could lead to Arbitrary File Read and Write.

Understanding CVE-2021-39982

This CVE involves an Improper Privilege Management vulnerability in the Phone Manager application of HarmonyOS by Huawei.

What is CVE-2021-39982?

The Phone Manager application in HarmonyOS has an Improper Privilege Management vulnerability that, if exploited, can allow an attacker to read and write arbitrary files by manipulating Phone Manager notifications.

The Impact of CVE-2021-39982

Exploiting this vulnerability can lead to unauthorized access to sensitive files, potentially compromising user privacy and system integrity.

Technical Details of CVE-2021-39982

This section delves into the technical aspects of the CVE.

Vulnerability Description

The Phone Manager application in HarmonyOS suffers from an Improper Privilege Management issue, enabling unauthorized file access through notification tampering.

Affected Systems and Versions

Affected Product: HarmonyOS
Vendor: Huawei
Affected Version: 2.0

Exploitation Mechanism

The vulnerability allows attackers to interact with Phone Manager notifications to access and manipulate files, compromising the device's security.

Mitigation and Prevention

Protect your system from CVE-2021-39982 with the following measures.

Immediate Steps to Take

Update HarmonyOS to the latest version provided by Huawei.
Avoid interacting with unknown or suspicious notifications on the Phone Manager application.
Regularly monitor and review file activities on the device.

Long-Term Security Practices

Employ strong security practices, such as using complex passwords and enabling two-factor authentication.
Educate users about the risks associated with interacting with potentially malicious notifications.
Implement security measures to detect and prevent unauthorized file access.

Patching and Updates

Stay informed about security bulletins and updates released by Huawei for HarmonyOS.
Promptly apply patches and security updates to mitigate known vulnerabilities.