CVE-2019-7864 in Magento
Summary
by MITRE
An insecure direct object reference (IDOR) vulnerability exists in the RSS feeds 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 can lead to unauthorized access to order details.
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Analysis
by VulDB Data Team • 07/19/2020
The vulnerability identified as CVE-2019-7864 represents a critical insecure direct object reference flaw that affects multiple versions of the Magento e-commerce platform. This weakness resides within the RSS feed functionality of the system, creating a pathway for unauthorized users to access sensitive order information that should otherwise be restricted to authorized parties. The vulnerability specifically impacts Magento 2.1 versions before 2.1.18, Magento 2.2 versions before 2.2.9, and Magento 2.3 versions before 2.3.2, indicating a widespread issue across the platform's major release lines. The flaw stems from inadequate input validation and access control mechanisms within the RSS feed implementation, allowing attackers to manipulate object references and gain unauthorized access to order details.
The technical implementation of this vulnerability occurs when the RSS feed component fails to properly validate user permissions before exposing order-related data. An attacker can exploit this by crafting malicious requests to the RSS feed endpoints, potentially using predictable order identifiers or by manipulating URL parameters to access order information belonging to other users. This type of vulnerability falls under the CWE-639 category of insecure direct object references, where the application's access control mechanisms are bypassed through direct manipulation of object references. The attack vector typically involves retrieving order identifiers from the system and then using these identifiers to construct requests that bypass normal authorization checks, effectively allowing unauthorized access to order details.
The operational impact of this vulnerability extends beyond simple data exposure, as order details in e-commerce systems typically contain sensitive customer information including personal identifiers, payment details, shipping addresses, and purchase histories. This exposure creates significant risks for both the organization and its customers, potentially leading to identity theft, financial fraud, and privacy violations. The vulnerability can be exploited by attackers with minimal technical expertise, making it particularly dangerous as it can be automated and scaled across multiple order records. Organizations may face regulatory compliance issues under data protection frameworks such as gdpr and pci dss, as unauthorized access to customer order information constitutes a breach of privacy and security requirements. The vulnerability also impacts business operations through potential reputational damage and loss of customer trust.
Mitigation strategies for CVE-2019-7864 should prioritize immediate patching of affected Magento versions to the recommended secure releases. Organizations must implement proper access control mechanisms that validate user permissions before exposing any object references, ensuring that RSS feed functionality properly enforces authorization checks. The implementation should include input validation to prevent manipulation of object identifiers and proper session management to ensure that users can only access their own order information. Security teams should conduct thorough penetration testing of RSS feed components and implement monitoring solutions to detect unauthorized access attempts. Additionally, organizations should review their overall access control architecture to identify and remediate similar vulnerabilities in other application components, as this type of flaw often indicates broader security architecture issues. The remediation process should align with security best practices outlined in the mitre att&ck framework, particularly focusing on access control and privilege escalation prevention techniques to prevent similar vulnerabilities from emerging in other system components.