CVE-2019-7892 in Magento
Summary
by MITRE
A remote code execution 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. An authenticated user with administrator privileges to access shipment settings can execute arbitrary code via server-side request forgery.
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Analysis
by VulDB Data Team • 07/20/2020
This vulnerability represents a critical remote code execution flaw in Magento e-commerce platforms that affects multiple version streams including 2.1.x before 2.1.18, 2.2.x before 2.2.9, and 2.3.x before 2.3.2. The vulnerability stems from insufficient input validation and sanitization within the shipment settings functionality, creating a server-side request forgery vector that allows authenticated administrators to execute arbitrary code on the affected systems. The flaw specifically manifests when administrators interact with shipment configuration parameters that fail to properly validate external input sources, enabling attackers to inject malicious payloads that are subsequently processed by the application's backend services.
The technical implementation of this vulnerability involves a classic server-side request forgery attack pattern where the authenticated administrator's privileges are leveraged to manipulate shipment-related configuration parameters. When the application processes these parameters, it fails to adequately sanitize or validate the input, allowing maliciously crafted URLs or endpoints to be passed directly to underlying system components. This creates a pathway for attackers to execute arbitrary commands on the server through the legitimate administrative interface, bypassing normal security controls that would otherwise prevent such operations. The vulnerability is particularly dangerous because it requires only administrative access, which is typically limited within secure environments, making it an attractive target for attackers who have already gained initial access to administrative accounts.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with complete control over the affected Magento instances. Once exploited, adversaries can modify product catalogs, access customer data, manipulate payment processing, and potentially use the compromised system as a launch point for further attacks within the network. The vulnerability affects the core commerce functionality of Magento installations, potentially leading to data breaches, financial losses, and reputational damage for organizations relying on these platforms. Organizations with multiple Magento instances or those using the platform for high-volume transactions face the greatest risk, as the attack surface expands with each additional administrative account that could be compromised.
Security mitigations for this vulnerability primarily focus on immediate patching of affected versions to the recommended secure releases, which include Magento 2.1.18, 2.2.9, and 2.3.2 respectively. Organizations should also implement additional controls such as network segmentation to limit administrative access, regular monitoring of administrative activities, and implementation of web application firewalls to detect suspicious parameter manipulation. The vulnerability aligns with CWE-918 Server-Side Request Forgery and maps to ATT&CK technique T1059 Command and Scripting Interpreter, specifically highlighting the exploitation of legitimate administrative interfaces for malicious code execution. Organizations should conduct thorough security assessments of their Magento installations, review administrative access controls, and ensure that all administrative accounts are properly secured with multi-factor authentication to minimize the risk of exploitation.