CVE-2019-7908 in Magento
Summary
by MITRE
A stored cross-site scripting vulnerability exists in the admin panel of Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2. This could be exploited by an authenticated user with privileges to modify product information.
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Analysis
by VulDB Data Team • 07/20/2020
This stored cross-site scripting vulnerability in Magento's admin panel represents a critical security flaw that allows authenticated attackers to inject malicious scripts into the system. The vulnerability specifically affects versions prior to the mentioned patches, creating a persistent threat vector that can be exploited by users with product modification privileges. The flaw resides in how the admin panel processes and displays product information, making it susceptible to malicious input that gets stored and later executed in the context of other users' browsers.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding within the product management functionality. When administrators or authorized users modify product data, the system fails to properly sanitize user-supplied content before storing it in the database. This creates a condition where malicious scripts can be embedded within product attributes, descriptions, or other editable fields. The stored nature of the vulnerability means that once the malicious input is processed and saved, it persists in the system and executes whenever the affected product information is viewed by other users.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to escalate privileges, steal session cookies, perform unauthorized actions within the admin panel, or redirect users to malicious websites. The attack requires authentication and specific privileges, but once exploited, it can compromise the entire administrative interface. This vulnerability aligns with CWE-79 which describes cross-site scripting flaws, and represents a significant risk to e-commerce operations where sensitive administrative functions are accessible to authenticated users. The stored nature of the XSS makes it particularly dangerous as it can affect multiple users over time rather than being limited to a single session.
Organizations affected by this vulnerability should immediately implement the official patches provided by Magento for their respective version ranges. The mitigation strategy should include comprehensive input validation, output encoding, and regular security audits of admin panel functionality. Additionally, implementing proper privilege segregation and monitoring user activities within the admin panel can help detect potential exploitation attempts. This vulnerability demonstrates the importance of maintaining current security patches and following the principle of least privilege in administrative systems. The ATT&CK framework categorizes this as a privilege escalation technique through web application vulnerabilities, emphasizing the need for robust input sanitization and proper access controls. Regular security assessments and security awareness training for administrative users remain essential components of a comprehensive defense strategy against such persistent threats.