CVE-2021-46887 : Vulnerability Insights and Analysis

A lack of length check vulnerability in the HW_KEYMASTER module could lead to out-of-bounds read, affecting Huawei EMUI versions 11.0.0, 10.1.1, and 10.1.0.

Understanding CVE-2021-46887

This CVE involves a specific type of vulnerability in the HW_KEYMASTER module that could result in potential out-of-bounds reads.

What is CVE-2021-46887?

The CVE-2021-46887 is a vulnerability caused by a lack of length check in the HW_KEYMASTER module. Successful exploitation of this vulnerability can lead to out-of-bounds read, potentially resulting in unauthorized access to sensitive information.

The Impact of CVE-2021-46887

This vulnerability can be exploited to cause out-of-bounds read, which may allow threat actors to access sensitive data, compromising the security and integrity of the affected systems.

Technical Details of CVE-2021-46887

This section provides detailed technical insights into the CVE-2021-46887 vulnerability.

Vulnerability Description

The vulnerability is classified as an Integer Underflow (Wrap or Wraparound), indicating a specific type of security weakness present in the HW_KEYMASTER module.

Affected Systems and Versions

Vendor: Huawei
Product: EMUI
Affected Versions: 11.0.0, 10.1.1, 10.1.0

Exploitation Mechanism

The vulnerability can be exploited by malicious actors to trigger out-of-bounds read, potentially leading to unauthorized access and data leakage.

Mitigation and Prevention

In order to mitigate the risks associated with CVE-2021-46887, the following steps should be taken:

Immediate Steps to Take

Apply security patches provided by Huawei promptly
Implement network segmentation to limit the impact of potential attacks

Long-Term Security Practices

Conduct regular security assessments and penetration testing
Educate employees on cybersecurity best practices to enhance overall resilience

Patching and Updates

Regularly check for and apply security updates and patches released by Huawei