CVE-2019-5830 : What You Need to Know

Google Chrome prior to version 75.0.3770.80 had a vulnerability in CORS policy enforcement, allowing remote attackers to access cross-origin data.

Understanding CVE-2019-5830

This CVE details a security issue in Google Chrome related to Cross-Origin Resource Sharing (CORS) policy enforcement.

What is CVE-2019-5830?

Prior to version 75.0.3770.80 of Google Chrome, inadequate policy enforcement in CORS allowed a remote attacker to retrieve cross-origin data using a specially crafted HTML page.

The Impact of CVE-2019-5830

The vulnerability could be exploited by malicious actors to access sensitive cross-origin data, potentially leading to unauthorized access and data leakage.

Technical Details of CVE-2019-5830

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability stemmed from insufficient policy enforcement in CORS in Google Chrome versions prior to 75.0.3770.80, enabling attackers to leak cross-origin data through a malicious HTML page.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 75.0.3770.80

Exploitation Mechanism

Attackers could exploit this vulnerability by creating a specially crafted HTML page to retrieve cross-origin data, bypassing CORS policy enforcement.

Mitigation and Prevention

To address CVE-2019-5830 and enhance security, follow these mitigation strategies:

Immediate Steps to Take

Update Google Chrome to version 75.0.3770.80 or newer to patch the vulnerability.
Avoid visiting untrusted websites or clicking on suspicious links to minimize the risk of exploitation.

Long-Term Security Practices

Regularly update browsers and software to ensure the latest security patches are applied.
Implement strict CORS policies and security measures to prevent unauthorized data access.

Patching and Updates

Stay informed about security advisories and updates from Google Chrome to promptly address any new vulnerabilities.