CVE-2020-15657 : Vulnerability Insights and Analysis

Firefox could be made to load attacker-supplied DLL files from the installation directory. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Understanding CVE-2020-15657

This CVE involves a vulnerability in Mozilla products that could allow an attacker to load malicious DLL files from the installation directory.

What is CVE-2020-15657?

This CVE refers to a DLL hijacking vulnerability in Firefox ESR, Firefox, and Thunderbird versions less than specified.

The Impact of CVE-2020-15657

Attackers could exploit this vulnerability to load malicious DLL files from the installation directory.
This issue only affects Windows operating systems, not other operating systems.

Technical Details of CVE-2020-15657

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows attackers to load attacker-supplied DLL files from the installation directory.

Affected Systems and Versions

Firefox ESR < 78.1
Firefox < 79
Thunderbird < 78.1

Exploitation Mechanism

Attackers need prior access to place files in the installation directory to exploit this vulnerability.

Mitigation and Prevention

Protect your systems from CVE-2020-15657 with these steps:

Immediate Steps to Take

Update Firefox ESR, Firefox, and Thunderbird to versions 78.1 and above.
Regularly monitor for any suspicious activities in the installation directory.

Long-Term Security Practices

Implement strict file access controls to prevent unauthorized DLL loading.
Conduct regular security audits to detect and mitigate similar vulnerabilities.

Patching and Updates

Apply security patches provided by Mozilla promptly to address this vulnerability.