CVE-2020-15963 : Security Advisory and Response

Insufficient policy enforcement in extensions in Google Chrome prior to 85.0.4183.121 allowed an attacker to potentially perform a sandbox escape via a crafted Chrome Extension.

Understanding CVE-2020-15963

This CVE involves a security issue in Google Chrome that could enable a sandbox escape through a malicious extension installation.

What is CVE-2020-15963?

CVE-2020-15963 refers to the insufficient policy enforcement in Chrome extensions, allowing attackers to exploit the browser's security mechanisms.

The Impact of CVE-2020-15963

The vulnerability could lead to a sandbox escape, enabling attackers to execute malicious code outside the browser's isolated environment.

Technical Details of CVE-2020-15963

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability arises from inadequate policy enforcement in Chrome extensions, creating a potential security loophole for sandbox escapes.

Affected Systems and Versions

Product: Chrome
Vendor: Google
Versions Affected: < 85.0.4183.121

Exploitation Mechanism

Attackers could exploit this vulnerability by convincing users to install a malicious extension, allowing them to escape the browser's sandbox.

Mitigation and Prevention

Protecting systems from CVE-2020-15963 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Chrome to version 85.0.4183.121 or higher to mitigate the vulnerability.
Avoid installing extensions from untrusted sources.

Long-Term Security Practices

Regularly update Chrome and all installed extensions.
Educate users on safe browsing habits and extension installation practices.

Patching and Updates

Ensure timely installation of security patches and updates provided by Google Chrome to address known vulnerabilities.