CVE-2019-7889 in Magento
Summary
by MITRE
An injection vulnerability exists 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. An authenticated user with marketing manipulation privileges can invoke methods that alter data of the underlying model followed by corresponding database modifications.
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Analysis
by VulDB Data Team • 07/19/2020
This vulnerability represents a critical injection flaw in Magento e-commerce platforms that affects multiple versions across both Magento Open Source and Commerce editions. The issue stems from insufficient input validation and sanitization mechanisms within the platform's marketing manipulation functionality, allowing authenticated users with specific privileges to execute unauthorized data modification operations. The vulnerability operates at the application level where user-supplied input is not properly escaped or validated before being processed by the underlying database layer, creating a pathway for malicious data injection attacks.
The technical implementation of this vulnerability leverages the platform's marketing manipulation capabilities to invoke methods that directly interact with the data model layer. When an authenticated user with marketing privileges submits crafted input through the affected interfaces, the system fails to properly sanitize the input before executing database operations. This allows attackers to manipulate the underlying data models and subsequently modify database records through injected commands or parameters. The flaw essentially bypasses the normal access controls and validation mechanisms that should prevent unauthorized data modification operations, enabling what is effectively a data manipulation injection attack.
From an operational impact perspective, this vulnerability poses significant risks to e-commerce platforms running affected Magento versions. An attacker with marketing privileges can potentially modify product catalogs, customer information, pricing data, and other critical business information without proper authorization. The vulnerability's impact extends beyond simple data modification to include potential data integrity compromise, which could affect inventory management, customer relationships, and overall business operations. Additionally, the unauthorized modifications could lead to financial losses, compliance violations, and reputational damage for organizations relying on these platforms for their online commerce operations.
Organizations should implement immediate mitigations including applying the vendor-provided patches for all affected Magento versions, which address the input validation issues in the marketing manipulation components. Network segmentation and access control measures should be strengthened to limit the scope of users who can access marketing manipulation functionalities. Regular security monitoring and log analysis should be implemented to detect unauthorized data modification attempts, while comprehensive input validation should be enforced throughout the application's data handling processes. The vulnerability aligns with CWE-79 Injection and follows patterns consistent with ATT&CK technique T1078 Valid Accounts, as it requires legitimate user privileges to exploit effectively. Organizations should also consider implementing additional security controls such as database activity monitoring, automated patch management systems, and regular vulnerability assessments to prevent similar issues from arising in other components of their e-commerce infrastructure.