CVE-2019-8142 in Magento
Summary
by MITRE
A stored cross-site scripting (XSS) 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 authenticated user can inject arbitrary JavaScript code via title of an order when configuring sales payment methods for a store.
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Analysis
by VulDB Data Team • 02/04/2024
This stored cross-site scripting vulnerability in Magento versions prior to the specified patches represents a significant security risk that leverages the platform's administrative functionality to persist malicious code. The flaw exists within the order configuration process for sales payment methods, where authenticated users can inject JavaScript code into the title field of orders. This vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws, and aligns with ATT&CK technique T1566.001 for initial access through malicious links or content. The vulnerability is particularly dangerous because it allows attackers to execute malicious scripts in the context of other users' browsers, potentially leading to session hijacking, data theft, or further compromise of the affected system.
The technical implementation of this vulnerability stems from insufficient input validation and output sanitization within the Magento administration interface. When an authenticated user configures payment methods and enters data into the order title field, the application fails to properly sanitize the input before storing it in the database and subsequently rendering it in the user interface. This stored data is then displayed without proper encoding, allowing the injected JavaScript to execute when other users view the affected order information. The vulnerability affects both Magento 2.2 versions prior to 2.2.10 and Magento 2.3 versions prior to 2.3.3 or 2.3.2-p1, indicating a widespread issue across multiple release lines that required different patch versions to address the specific flaw.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a wide range of malicious activities within the compromised environment. An attacker with access to the Magento administration panel could inject scripts that steal administrator session cookies, redirect users to malicious sites, or even modify order information to facilitate fraud. The stored nature of the vulnerability means that the malicious code persists even after the initial injection, making it particularly dangerous for ongoing attacks. This vulnerability can be exploited as part of a broader attack chain where initial access is gained through other means, and then used to maintain persistence or escalate privileges within the Magento environment, potentially leading to complete system compromise.
Organizations should prioritize immediate patching of affected Magento installations to address this vulnerability, following the vendor's recommended update procedures for the specific version ranges mentioned. Security teams should also implement additional monitoring for unusual administrative activities and input validation within the payment configuration areas. The remediation process should include verifying that all users have been updated to the patched versions and conducting thorough security assessments of the affected systems. Additionally, implementing web application firewalls and content security policies can provide additional layers of protection against similar vulnerabilities, though these measures should complement rather than replace proper patch management. Organizations should also review their access controls and user permissions to minimize the potential impact of compromised administrative accounts.