CVE-2020-12393 : Security Advisory and Response

A vulnerability in Mozilla products could allow for command injection and arbitrary command execution.

Understanding CVE-2020-12393

This CVE involves a security issue in Mozilla Firefox ESR, Firefox, and Thunderbird versions.

What is CVE-2020-12393?

The vulnerability arises from the 'Copy as cURL' feature in Devtools' network tab, which fails to properly escape the HTTP method of a request, potentially leading to command injection.

The Impact of CVE-2020-12393

Exploiting this vulnerability could result in arbitrary command execution, posing a significant security risk to affected systems.

Technical Details of CVE-2020-12393

This section delves into the specifics of the vulnerability.

Vulnerability Description

The vulnerability allows for command injection and arbitrary command execution due to improper handling of the HTTP method in the 'Copy as cURL' feature.

Affected Systems and Versions

Firefox ESR < 68.8
Firefox < 76
Thunderbird < 68.8.0

Exploitation Mechanism

The issue can be exploited by manipulating the HTTP method of a request using the 'Copy as cURL' feature.

Mitigation and Prevention

Protecting systems from this vulnerability requires immediate action and long-term security measures.

Immediate Steps to Take

Update Mozilla Firefox ESR to version 68.8 or higher
Update Mozilla Firefox to version 76 or higher
Update Thunderbird to version 68.8.0 or higher

Long-Term Security Practices

Avoid pasting commands from untrusted sources
Regularly update software to the latest versions

Patching and Updates

Ensure timely installation of security patches and updates provided by Mozilla.