CVE-2020-28199 in Amazon Pay Plugin
Summary
by MITRE • 02/26/2021
best it Amazon Pay Plugin before 9.4.2 for Shopware exposes Sensitive Information to an Unauthorized Actor.
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Analysis
by VulDB Data Team • 03/05/2021
The vulnerability identified as CVE-2020-28199 affects the Amazon Pay Plugin for Shopware versions prior to 9.4.2, representing a critical information disclosure flaw that compromises the security posture of e-commerce platforms. This vulnerability stems from insufficient input validation and improper access controls within the plugin's code implementation, allowing unauthorized actors to gain access to sensitive customer data that should remain protected within the system's secure boundaries. The issue manifests when the plugin fails to properly authenticate and authorize requests for sensitive information, creating an attack vector that could be exploited by malicious entities to extract confidential data from the platform's database.
The technical implementation flaw resides in the plugin's handling of API requests and data transmission processes, where inadequate sanitization of user inputs and insufficient validation of request origins enable attackers to manipulate the system's response mechanisms. This vulnerability falls under the category of improper access control as defined by CWE-285, specifically CWE-285-10, where the system fails to properly enforce access restrictions on sensitive resources. The flaw allows for unauthorized data exposure through predictable API endpoints that should require proper authentication tokens and session validation before granting access to customer payment information, transaction records, and personal details.
From an operational impact perspective, this vulnerability creates significant risk for both merchants and customers within the Shopware ecosystem, as it exposes sensitive payment data that could be leveraged for financial fraud, identity theft, and other malicious activities. The unauthorized access to customer information could result in regulatory violations under data protection frameworks such as gdpr, pci dss, and other compliance standards that mandate strict controls over sensitive data handling. Attackers could potentially extract customer payment details, order histories, personal identification information, and other confidential data that would normally be protected within the secure confines of the e-commerce platform's database architecture.
The attack surface for this vulnerability extends beyond simple data exfiltration to include potential lateral movement within the affected systems, as compromised data could be used to facilitate more sophisticated attacks such as credential stuffing, account takeover attempts, and social engineering operations. Security researchers have noted that this type of information disclosure vulnerability often serves as a stepping stone for more complex attack chains, where initial access to sensitive data enables attackers to escalate privileges and gain deeper access to the underlying infrastructure. The impact on business operations includes potential loss of customer trust, regulatory fines, legal liabilities, and reputational damage that could significantly affect the merchant's long-term viability.
Mitigation strategies for CVE-2020-28199 require immediate deployment of the patched version 9.4.2 or later, which implements proper access controls, input validation, and authentication mechanisms to prevent unauthorized data access. Organizations should conduct comprehensive security assessments of their Shopware installations to identify any other potentially vulnerable plugins or components that might exhibit similar access control flaws. Network monitoring should be enhanced to detect unusual data access patterns and unauthorized API requests that could indicate exploitation attempts. The implementation of proper security controls including web application firewalls, rate limiting, and detailed logging of access attempts provides additional layers of protection against similar vulnerabilities. Regular security updates and patch management processes should be enforced across all e-commerce platforms to prevent the exploitation of known vulnerabilities that could compromise sensitive customer data and financial information within the system.