CVE-2019-7849 : Exploit Details and Defense Strategies

A vulnerability in Magento versions 1.x and 2.x could allow attackers to exploit inadequate session validation handling by third-party checkout modules.

Understanding CVE-2019-7849

This CVE addresses a security issue in Magento that affects various versions of the platform.

What is CVE-2019-7849?

Magento versions 1.x before 1.9.4.2, Magento Commerce versions before 1.14.4.2, Magento 2.1 before 2.1.18, Magento 2.2 before 2.2.9, and Magento 2.3 before 2.3.2 are vulnerable to insufficient session validation handling by third-party checkout modules.

The Impact of CVE-2019-7849

This vulnerability could be exploited by malicious actors to compromise the security of Magento-based e-commerce websites, potentially leading to unauthorized access and data breaches.

Technical Details of CVE-2019-7849

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

Vulnerability Description

A defense-in-depth check was added to address the inadequate session validation handling by third-party checkout modules in Magento versions 1.x and 2.x.

Affected Systems and Versions

Affected Products: Magento 1, Magento 2
Vulnerable 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 could exploit this vulnerability by leveraging the insufficient session validation handling in third-party checkout modules to gain unauthorized access to Magento-based websites.

Mitigation and Prevention

Protecting systems from CVE-2019-7849 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply the security patch provided by Magento to fix the vulnerability.
Regularly monitor and audit third-party modules for security vulnerabilities.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities in custom code.
Educate developers and administrators on secure coding and configuration best practices.

Patching and Updates

Ensure all Magento installations are updated to versions that include the security patch for CVE-2019-7849.