CVE-2019-6743 : Security Advisory and Response

This CVE-2019-6743 article provides insights into a vulnerability affecting Xiaomi Mi6 Browsers prior to version 10.4.0, allowing remote attackers to execute arbitrary code.

Understanding CVE-2019-6743

This section delves into the specifics of the vulnerability and its impact.

What is CVE-2019-6743?

The vulnerability in Xiaomi Mi6 Browsers versions earlier than 10.4.0 enables remote attackers to execute arbitrary code by exploiting a flaw in the WebAssembly.Instance method. User interaction is required for exploitation, typically through visiting a malicious webpage or opening a harmful file.

The Impact of CVE-2019-6743

The vulnerability has a CVSS base score of 7.8, indicating a high severity issue with significant impacts on confidentiality, integrity, and availability. Attackers can run any desired code on the affected browsers.

Technical Details of CVE-2019-6743

Explore the technical aspects of the vulnerability in this section.

Vulnerability Description

The flaw arises from inadequate validation of user-supplied data, allowing attackers to write beyond the allocated heap-based buffer, leading to code execution within the ongoing process.

Affected Systems and Versions

Product: Browser
Vendor: Xiaomi
Versions Affected: Prior to 10.4.0

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
User Interaction: Required
Privileges Required: None
Scope: Unchanged
Impact: High on Confidentiality, Integrity, and Availability

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2019-6743.

Immediate Steps to Take

Update Xiaomi Mi6 Browsers to version 10.4.0 or later to patch the vulnerability.
Avoid visiting suspicious websites or opening files from untrusted sources.

Long-Term Security Practices

Regularly update software and applications to prevent known vulnerabilities.
Educate users on safe browsing habits and the risks associated with interacting with unknown sources.

Patching and Updates

Stay informed about security updates from Xiaomi and apply patches promptly to secure the browser against potential threats.