CVE-2020-12388 : Security Advisory and Response

A vulnerability in Firefox and Firefox ESR versions could allow for a sandbox escape on Windows operating systems.

Understanding CVE-2020-12388

This CVE identifies a security issue in Firefox and Firefox ESR that could lead to a sandbox escape due to insufficient access control in content processes.

What is CVE-2020-12388?

The vulnerability in Firefox content processes could potentially allow an attacker to escape the sandbox environment, particularly affecting Windows operating systems.

The Impact of CVE-2020-12388

The vulnerability could be exploited by malicious actors to escape the browser's sandbox, potentially leading to further system compromise.

Technical Details of CVE-2020-12388

This section provides more technical insights into the vulnerability.

Vulnerability Description

The Firefox content processes lacked adequate access control measures, enabling a sandbox escape scenario.

Affected Systems and Versions

Products: Firefox ESR, Firefox
Versions: Firefox ESR < 68.8, Firefox < 76

Exploitation Mechanism

The vulnerability could be exploited by leveraging the lack of proper access control in Firefox content processes.

Mitigation and Prevention

Protecting systems from CVE-2020-12388 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Firefox and Firefox ESR to versions 68.8 and 76, respectively.
Consider restricting access to sensitive systems.
Monitor for any suspicious activities on the network.

Long-Term Security Practices

Regularly update browsers and other software to patch known vulnerabilities.
Implement strong access control measures to limit potential attack surfaces.

Patching and Updates

Apply security patches provided by Mozilla promptly to address the vulnerability and enhance system security.