CVE-2019-5879 : Exploit Details and Defense Strategies

Google Chrome prior to version 77.0.3865.75 had a vulnerability that allowed attackers to gain unauthorized access to local files through malicious extensions.

Understanding CVE-2019-5879

This CVE describes an issue in Google Chrome that enabled attackers to exploit insufficient policy enforcement in extensions.

What is CVE-2019-5879?

Prior to version 77.0.3865.75, Google Chrome lacked proper policy enforcement for extensions, allowing attackers to access local files by tricking users into installing a crafted Chrome Extension.

The Impact of CVE-2019-5879

The vulnerability in Chrome could lead to unauthorized access to sensitive local files, compromising user data and privacy.

Technical Details of CVE-2019-5879

Google Chrome's vulnerability had the following technical details:

Vulnerability Description

The issue stemmed from insufficient policy enforcement in Chrome extensions, enabling attackers to read local files through specially crafted extensions.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 77.0.3865.75

Exploitation Mechanism

Attackers could exploit this vulnerability by convincing users to install a malicious Chrome Extension, granting unauthorized access to local files.

Mitigation and Prevention

To address CVE-2019-5879, consider the following steps:

Immediate Steps to Take

Update Google Chrome to version 77.0.3865.75 or newer.
Avoid installing extensions from untrusted sources.

Long-Term Security Practices

Regularly review and remove unnecessary extensions.
Educate users on safe extension installation practices.

Patching and Updates

Stay informed about Chrome security updates and apply patches promptly.