CVE-2020-15664 : Exploit Details and Defense Strategies

A vulnerability in Firefox, Thunderbird, Firefox ESR, and Firefox for Android could allow malicious webpages to install extensions without user consent.

Understanding CVE-2020-15664

This CVE highlights a security issue in multiple Mozilla products that could lead to the unintended installation of extensions.

What is CVE-2020-15664?

By exploiting a flaw related to the eval() function, a malicious webpage could trick users into installing extensions without their knowledge or consent.

The Impact of CVE-2020-15664

This vulnerability could result in the installation of unintended or malicious extensions on affected systems, potentially compromising user security and privacy.

Technical Details of CVE-2020-15664

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability allows a malicious webpage to access the InstallTrigger object, enabling the installation of extensions without user permission.

Affected Systems and Versions

Firefox < 80
Thunderbird < 78.2, Thunderbird < 68.12
Firefox ESR < 68.12, Firefox ESR < 78.2
Firefox for Android < 80

Exploitation Mechanism

By holding a reference to the eval() function from an about:blank window, a malicious webpage could exploit this vulnerability.

Mitigation and Prevention

Protecting systems from CVE-2020-15664 requires immediate action and long-term security practices.

Immediate Steps to Take

Update affected products to versions that address the vulnerability.
Avoid visiting untrusted websites or clicking on suspicious links.
Regularly monitor for security updates from Mozilla.

Long-Term Security Practices

Educate users on safe browsing habits and the risks of installing unknown extensions.
Implement security measures like firewalls and antivirus software to prevent malicious activities.

Patching and Updates

Ensure that all affected systems are promptly updated with the latest patches released by Mozilla to mitigate the vulnerability.