CVE-2021-46814 : Exploit Details and Defense Strategies

HarmonyOS, EMUI, and Magic UI by Huawei are affected by an out-of-bounds memory read/write vulnerability in the video framework.

Understanding CVE-2021-46814

What is CVE-2021-46814?

The CVE-2021-46814 vulnerability involves an out-of-bounds memory read/write issue in the video framework, potentially leading to system availability impact.

The Impact of CVE-2021-46814

Successful exploitation of this vulnerability could severely impact the availability of the affected systems.

Technical Details of CVE-2021-46814

Vulnerability Description

The vulnerability lies in the video framework, allowing unauthorized access to memory locations outside the bounds of the allocated memory.

Affected Systems and Versions

HarmonyOS 2.0
EMUI 10.1.0, 10.1.1, 11.0.0, 12.0.0
Magic UI 3.1.0, 3.1.1, 4.0.0

Exploitation Mechanism

The vulnerability can be exploited by performing out-of-bounds memory read or write operations, potentially causing system instability.

Mitigation and Prevention

Immediate Steps to Take

Apply security patches from Huawei promptly.
Monitor official Huawei security bulletins for updates.
Implement network security measures to detect potential exploitation attempts.

Long-Term Security Practices

Conduct regular security assessments and audits.
Train staff on recognizing and reporting security issues.
Utilize intrusion detection systems to enhance overall security posture.

Patching and Updates

Regularly check Huawei's security bulletins for the release of patches to address the CVE-2021-46814 vulnerability.