CVE-2019-8132 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 craft malicious payload in the template Name field for Email template in the "Design Configuration" dashboard.
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Analysis
by VulDB Data Team • 02/05/2024
This vulnerability represents a critical stored cross-site scripting flaw that affects multiple versions of the Magento e-commerce platform. The issue resides within the email template management functionality where authenticated users can inject malicious scripts into the template name field. This allows attackers with valid credentials to persistently execute malicious code against other users who view the compromised email templates. The vulnerability specifically impacts Magento 2.2 versions before 2.2.10, Magento 2.3 versions before 2.3.3, and 2.3.2-p1 releases, making it a widespread concern across the Magento 2.x ecosystem. The flaw enables attackers to exploit the trust relationship between users and the application by leveraging the legitimate user's privileges to deliver malicious payloads.
The technical nature of this vulnerability stems from insufficient input validation and output encoding within the email template name field processing. When administrators or authorized users create or modify email templates through the Design Configuration dashboard, the application fails to properly sanitize user-supplied input before storing it in the database. This stored data is then later rendered in the user interface without adequate protection against script execution, creating a classic stored XSS vector. The vulnerability operates under CWE-79 which classifies it as a cross-site scripting weakness, specifically a stored variant where malicious scripts are permanently stored on the target server. The flaw demonstrates poor input sanitization practices that violate fundamental web application security principles and can be directly mapped to ATT&CK technique T1566.001 which involves the use of malicious email attachments and links to establish initial compromise.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to perform various malicious activities including session hijacking, data theft, and privilege escalation within the Magento environment. An attacker who successfully exploits this vulnerability can potentially access sensitive customer data, modify email communications, or even escalate their privileges to gain administrative access to the platform. The authenticated nature of the attack means that any user with access to the Design Configuration section can exploit this flaw, making it particularly dangerous in environments where multiple administrators have access to the system. The stored aspect of the vulnerability means that the malicious payload persists even after the initial injection, allowing attackers to maintain access and continue exploiting the flaw over extended periods without requiring repeated injection attempts.
Organizations affected by this vulnerability should implement immediate mitigations including applying the vendor patches released for versions 2.2.10, 2.3.3, and 2.3.2-p1 respectively. The recommended approach involves comprehensive input validation and output encoding for all user-supplied data within the email template management functionality. Security teams should also consider implementing web application firewalls with XSS detection capabilities and conduct thorough security reviews of all user input handling mechanisms. Additionally, organizations should enforce strict access controls and privilege separation within their Magento installations to limit the potential impact of such vulnerabilities. The remediation process should include comprehensive testing to ensure that the patch does not introduce regressions in the email template functionality while maintaining robust security controls. Regular security assessments and vulnerability scanning should be conducted to identify similar issues in other parts of the application stack that may present similar security risks.