CVE-2019-5766 Explained : Impact and Mitigation

Google Chrome prior to 72.0.3626.81 mishandles origin taint checking in the Canvas feature, leading to a security vulnerability that allows remote attackers to extract sensitive cross-origin information.

Understanding CVE-2019-5766

This CVE involves the mishandling of origin taint checking in Google Chrome versions before 72.0.3626.81, potentially enabling remote attackers to access sensitive cross-origin data.

What is CVE-2019-5766?

The vulnerability in Google Chrome versions prior to 72.0.3626.81 allows remote attackers to extract sensitive cross-origin information by exploiting a flaw in the Canvas feature.

The Impact of CVE-2019-5766

The security issue in Chrome could result in the leakage of cross-origin data to malicious actors, posing a risk to user privacy and data confidentiality.

Technical Details of CVE-2019-5766

Google Chrome's vulnerability prior to version 72.0.3626.81 is detailed below:

Vulnerability Description

Incorrect handling of origin taint checking in Canvas
Allows a remote attacker to leak cross-origin data via a crafted HTML page

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 72.0.3626.81

Exploitation Mechanism

Remote attackers can exploit the vulnerability by using a specially designed HTML page to extract sensitive cross-origin information.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-5766 vulnerability:

Immediate Steps to Take

Update Google Chrome to version 72.0.3626.81 or later
Avoid visiting untrusted websites or clicking on suspicious links

Long-Term Security Practices

Regularly update browsers and software to the latest versions
Implement strong security policies and practices to mitigate similar vulnerabilities

Patching and Updates

Google has released patches addressing this vulnerability, so ensure timely installation of updates to protect against potential exploits.