CVE-2019-8158 : Security Advisory and Response

Magento 2 versions prior to 2.2.10, 2.3.3, or 2.3.2-p1 are vulnerable to an XPath entity injection flaw that allows attackers to gain restricted access to XML data.

Understanding CVE-2019-8158

This CVE identifies an XPath Injection vulnerability in Magento 2.

What is CVE-2019-8158?

An attacker can exploit an XPath entity injection flaw in Magento 2 versions prior to 2.2.10, 2.3.3, or 2.3.2-p1 by crafting a specific GET request to the page cache block rendering module.

The Impact of CVE-2019-8158

The vulnerability enables attackers to bypass the XML data processing engine without validation, leading to restricted access to underlying XML data.

Technical Details of CVE-2019-8158

Magento 2 is affected by an XPath Injection vulnerability.

Vulnerability Description

The flaw allows attackers to manipulate XML data processing by crafting malicious GET requests.

Affected Systems and Versions

Product: Magento 2
Vendor: Adobe Systems Incorporated
Affected Versions: Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1

Exploitation Mechanism

Attackers exploit the vulnerability by creating specially crafted GET requests to the page cache block rendering module.

Mitigation and Prevention

Immediate action and long-term security practices are crucial to mitigate the risk of CVE-2019-8158.

Immediate Steps to Take

Apply the security update to Magento 2.2.10, 2.3.3, or 2.3.2-p1.
Monitor and restrict access to sensitive XML data.

Long-Term Security Practices

Regularly update Magento to the latest versions.
Implement strict input validation and output encoding to prevent injection attacks.
Conduct security audits and penetration testing to identify vulnerabilities.

Patching and Updates

Refer to the security update provided by Adobe Systems Incorporated to patch the vulnerability.