CVE-2019-7913 in Magento
Summary
by MITRE
A server-side request forgery (SSRF) vulnerability exists in 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 can be exploited by an authenticated user with admin privileges to manipulate shipment methods to execute arbitrary code.
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Analysis
by VulDB Data Team • 07/20/2020
The vulnerability identified as CVE-2019-7913 represents a critical server-side request forgery flaw within the Magento e-commerce platform ecosystem. This vulnerability affects multiple versions of Magento 2.x, specifically targeting Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9, and Magento 2.3 prior to 2.3.2. The flaw resides in the shipment method configuration functionality, which allows authenticated administrators to manipulate the underlying request processing mechanisms. The vulnerability is particularly dangerous because it requires only administrative access to exploit, making it accessible to users with elevated privileges who can leverage the SSRF capability to execute arbitrary code on the affected system.
The technical implementation of this vulnerability stems from insufficient input validation and sanitization within the shipment method handling code. When administrators configure shipment methods through the Magento admin panel, the system processes user-supplied parameters without adequate restrictions on the URLs or endpoints that can be referenced. This allows an authenticated attacker to craft malicious requests that can redirect the server's outbound communications to internal or external targets. The flaw enables attackers to bypass normal network security controls and potentially access internal systems that would otherwise be protected by firewalls or network segmentation. The vulnerability operates at the application layer and can be exploited to perform reconnaissance, data exfiltration, or further compromise of the affected infrastructure.
The operational impact of CVE-2019-7913 extends beyond simple code execution capabilities, as it provides attackers with a potential foothold for broader system compromise. An attacker with administrative privileges can leverage this vulnerability to perform internal network scanning, access sensitive data stored on internal servers, or establish persistent access points. The vulnerability's exploitation can lead to complete system compromise, data breaches, and potential disruption of e-commerce operations. Organizations running affected Magento versions face significant risk of unauthorized access to customer data, financial information, and system resources. The vulnerability also poses risks to supply chain security, as compromised Magento installations could serve as entry points for attacks on connected systems and services.
Security mitigations for this vulnerability should focus on immediate patching of affected Magento versions to the recommended secure releases. Organizations must ensure that all administrative accounts maintain strong authentication mechanisms including multi-factor authentication and regular credential rotation. Network segmentation and firewall rules should be implemented to restrict outbound communications from web servers, particularly limiting access to internal services. The vulnerability aligns with CWE-918, which describes server-side request forgery vulnerabilities, and can be mapped to ATT&CK technique T1071.004 for application layer protocol traffic. Regular security monitoring and log analysis should be implemented to detect anomalous outbound requests that may indicate exploitation attempts. Additionally, implementing web application firewalls and input validation controls can provide additional defense-in-depth measures to protect against similar vulnerabilities in the future.