CVE-2017-5018 : Security Advisory and Response

Google Chrome prior to version 56.0.2924.76 for Linux, Windows, and Mac, and 56.0.2924.87 for Android had a vulnerability that allowed a remote attacker to inject scripts or HTML into a privileged page.

Understanding CVE-2017-5018

Versions of Google Chrome earlier than 56.0.2924.76 for Linux, Windows, and Mac operating systems, and 56.0.2924.87 for Android, had a content security policy on the Chrome app launcher page that was not adequately strict. This flaw made it possible for a malicious actor to inject scripts or HTML into a privileged page by exploiting a specially designed HTML page.

What is CVE-2017-5018?

Google Chrome versions prior to 56.0.2924.76 for Linux, Windows, and Mac, and 56.0.2924.87 for Android were affected.
The vulnerability allowed a remote attacker to inject scripts or HTML into a privileged page.

The Impact of CVE-2017-5018

A remote attacker could exploit this vulnerability to inject malicious scripts or HTML into a privileged page.

Technical Details of CVE-2017-5018

Google Chrome prior to version 56.0.2924.76 for Linux, Windows, and Mac, and 56.0.2924.87 for Android had the following technical details:

Vulnerability Description

Insufficiently strict content security policy on the Chrome app launcher page.
Allowed a remote attacker to inject scripts or HTML into a privileged page.

Affected Systems and Versions

Google Chrome versions prior to 56.0.2924.76 for Linux, Windows, and Mac, and 56.0.2924.87 for Android.

Exploitation Mechanism

Remote attackers could exploit the vulnerability by using a specially crafted HTML page.

Mitigation and Prevention

To mitigate the risks associated with CVE-2017-5018, consider the following steps:

Immediate Steps to Take

Update Google Chrome to version 56.0.2924.76 for Linux, Windows, and Mac, and 56.0.2924.87 for Android.
Be cautious while browsing and avoid clicking on suspicious links.

Long-Term Security Practices

Regularly update your browser and other software to the latest versions.
Implement strong security measures on your system to prevent unauthorized access.

Patching and Updates

Stay informed about security updates for Google Chrome and apply patches promptly to address known vulnerabilities.