CVE-2019-7898 in Magento
Summary
by MITRE
Samples of disabled downloadable products are accessible in Magento Open Source prior to 1.9.4.2, and Magento Commerce prior to 1.14.4.2, Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, Magento 2.3 prior to 2.3.2 due to inadequate validation of user input.
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Analysis
by VulDB Data Team • 07/20/2020
This vulnerability in Magento platforms represents a critical access control flaw that allows unauthorized users to download disabled product samples. The issue stems from insufficient input validation mechanisms within the software's product management system, specifically affecting versions prior to the mentioned security patches. The vulnerability exists because the application fails to properly verify whether a product is active or disabled before granting access to downloadable sample files. This weakness creates a pathway for malicious actors to bypass intended access restrictions and obtain content that should be unavailable to customers. The flaw impacts both Magento Open Source and Commerce editions across multiple version lines, indicating a widespread issue within the platform's architecture.
The technical implementation of this vulnerability involves the application's failure to perform proper authentication and authorization checks when processing requests for downloadable product samples. When a user attempts to access a sample file, the system should verify that the associated product is still active and that the requesting user has proper permissions. However, the inadequate validation allows requests to proceed regardless of the product's disabled status. This type of vulnerability falls under CWE-284 which describes improper access control issues, and aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation. The flaw essentially creates a backdoor mechanism where disabled products remain accessible through direct file access patterns.
The operational impact of this vulnerability is significant for e-commerce platforms relying on Magento, as it allows unauthorized access to proprietary content, marketing materials, and potentially sensitive product information. Attackers could exploit this vulnerability to obtain competitive intelligence, download marketing samples, or access restricted content that was intended to be available only to specific customer segments. The risk extends beyond simple content theft to potential intellectual property exposure and competitive disadvantage for businesses using the platform. Organizations may face reputational damage and legal implications if proprietary product materials are accessed and misused by unauthorized parties. The vulnerability also creates opportunities for further attacks as attackers might use the accessible content to develop more sophisticated exploitation strategies.
Mitigation strategies for this vulnerability require immediate implementation of security patches released by Magento to address the input validation deficiencies. Organizations should ensure all affected versions are updated to the latest secure releases, particularly focusing on the specific version ranges mentioned in the vulnerability description. Network-level controls and access restrictions should be implemented to limit direct file access where possible, though this approach is less effective given the nature of the vulnerability. Regular security audits should verify that product status changes are properly enforced throughout the system, and access logs should be monitored for unusual patterns related to disabled product requests. Additionally, implementing proper input sanitization and validation mechanisms at multiple layers of the application architecture can help prevent similar issues from occurring in the future. Organizations should also consider implementing automated vulnerability scanning tools to identify other potential access control weaknesses within their Magento installations.