CVE-2019-7940 : What You Need to Know

Magento versions prior to 1.9.4.2, 1.14.4.2, 2.1.18, 2.2.9, and 2.3.2 are vulnerable to a stored cross-site scripting issue in the admin panel.

Understanding CVE-2019-7940

A stored XSS vulnerability in Magento versions allows authenticated users to inject malicious JavaScript code.

What is CVE-2019-7940?

This CVE identifies a security flaw in Magento versions that permits authorized users to insert harmful JavaScript code through the admin panel.

The Impact of CVE-2019-7940

The vulnerability enables attackers to execute arbitrary scripts within the context of the user's session, potentially leading to account compromise or data theft.

Technical Details of CVE-2019-7940

Magento versions prior to specified releases are susceptible to a stored cross-site scripting vulnerability.

Vulnerability Description

The flaw allows authenticated users with specific permissions to manipulate store currency settings and inject malicious JavaScript code.

Affected Systems and Versions

Magento Open Source prior to 1.9.4.2
Magento Commerce prior to 1.14.4.2
Magento 2.1 prior to 2.1.18
Magento 2.2 prior to 2.2.9
Magento 2.3 prior to 2.3.2

Exploitation Mechanism

Attackers with authorized access can exploit this vulnerability by modifying store currency options to insert harmful JavaScript code.

Mitigation and Prevention

Immediate action and long-term security practices are crucial to safeguard against CVE-2019-7940.

Immediate Steps to Take

Apply the security update provided by Magento for the affected versions.
Regularly monitor and review admin panel activities for suspicious behavior.
Educate users with admin privileges on secure coding practices.

Long-Term Security Practices

Implement least privilege access controls to limit user capabilities.
Conduct regular security audits and penetration testing to identify vulnerabilities.
Stay informed about security best practices and updates from Magento.

Patching and Updates

Install the security patch released by Magento for the affected versions to mitigate the vulnerability.