CVE-2021-46881 Explained : Impact and Mitigation

A memory overwriting vulnerability in the video framework of Huawei HarmonyOS and EMUI may lead to availability issues.

Understanding CVE-2021-46881

This CVE discloses a memory overwriting vulnerability within Huawei's video framework that could impact system availability.

What is CVE-2021-46881?

The vulnerability involves memory overwriting due to addition overflow within the video framework of Huawei's systems.

The Impact of CVE-2021-46881

Exploiting this vulnerability successfully could result in affecting the availability of systems running Huawei HarmonyOS and EMUI.

Technical Details of CVE-2021-46881

This section covers the technical aspects of the CVE.

Vulnerability Description

The vulnerability is a memory overwriting issue caused by addition overflow in the video framework.

Affected Systems and Versions

Huawei HarmonyOS versions affected: 2.1.0, 2.0.1, 2.0.0
Huawei EMUI versions affected: 12.0.1, 12.0.0, 11.0.0, 10.1.1, 10.1.0

Exploitation Mechanism

Successful exploitation of this vulnerability could lead to the overwriting of critical memory sections, impacting system availability.

Mitigation and Prevention

Efficient steps to address and prevent the vulnerability.

Immediate Steps to Take

Apply security patches provided by Huawei promptly.
Monitor vendor communications for updates and mitigation guidance.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch systems with the latest security releases.
Conduct thorough security assessments and penetration testing.

Patching and Updates

Ensure timely installation of patches released by Huawei to address the vulnerability.