CVE-2021-46891 Explained : Impact and Mitigation

CVE-2021-46891 relates to a vulnerability in Huawei's HarmonyOS and EMUI versions that could result in incomplete read and write permission verification in the GPU module, potentially compromising service confidentiality, integrity, and availability.

Understanding CVE-2021-46891

What is CVE-2021-46891?

The CVE-2021-46891 vulnerability involves incomplete read and write permission verification within the GPU module. Exploiting this flaw could have severe implications on the affected system's service confidentiality, integrity, and availability.

The Impact of CVE-2021-46891

The successful exploitation of CVE-2021-46891 could lead to severe consequences, including unauthorized access to sensitive information and potential service disruption.

Technical Details of CVE-2021-46891

Vulnerability Description

The vulnerability stems from incomplete verification of read and write permissions in the GPU module, exposing the system to security risks.

Affected Systems and Versions

HarmonyOS version 2.0.0
EMUI version 12.0.0

Exploitation Mechanism

The exploitation of this vulnerability could allow attackers to bypass permission checks within the GPU module, compromising the system's security.

Mitigation and Prevention

Immediate Steps to Take

Update affected systems to the latest versions provided by Huawei.
Implement strict access control policies to limit unauthorized access to sensitive resources.

Long-Term Security Practices

Conduct regular security audits and vulnerability assessments to detect and address similar issues proactively.

Patching and Updates

Huawei has released patches to address CVE-2021-46891. It is crucial to apply these updates promptly to mitigate the risk of exploitation.