#VU30661 XML injection in Magento Open Source - CVE-2019-8158

Vulnerability identifier: #VU30661

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-8158

CWE-ID: CWE-91

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Magento Open Source
Web applications / E-Commerce systems

Vendor: Adobe

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

An XPath entity injection vulnerability exists in Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3 or 2.3.2-p1. An attacker can craft a GET request to page cache block rendering module that gets passed to XML data processing engine without validation. The crafted key/value GET request data allows an attacker to limited access to underlying XML data.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Magento Open Source: 2.3.0 - 2.3.1

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External links
https://magento.com/security/patches/magento-2.3.3-and-2.2.10-security-update

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.