CVE-2018-0658 in Payment Module
Summary
by MITRE
Input validation issue in EC-CUBE Payment Module (2.12) version 3.5.23 and earlier, EC-CUBE Payment Module (2.11) version 2.3.17 and earlier, GMO-PG Payment Module (PG Multi-Payment Service) (2.12) version 3.5.23 and earlier, GMO-PG Payment Module (PG Multi-Payment Service) (2.11) version 2.3.17 and earlier allows an attacker with administrative rights to execute arbitrary PHP code on the server via unspecified vectors.
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Analysis
by VulDB Data Team • 03/21/2020
The vulnerability identified as CVE-2018-0658 represents a critical input validation flaw within the payment processing modules of the EC-CUBE e-commerce platform ecosystem. This issue affects multiple payment gateway implementations including both the standard EC-CUBE Payment Module and the GMO-PG Payment Module, specifically targeting versions up to and including 3.5.23 for the 2.12 branch and 2.3.17 for the 2.11 branch. The vulnerability stems from inadequate sanitization of user-supplied input data within the payment processing workflows, creating a pathway for malicious code execution.
The technical nature of this vulnerability aligns with CWE-20, which describes improper input validation as a fundamental weakness in software security. Attackers exploiting this flaw require administrative privileges within the target system to successfully execute malicious PHP code on the server. This privilege requirement significantly reduces the attack surface compared to vulnerabilities that can be exploited by unauthenticated users, but the impact remains severe given that administrative access typically provides comprehensive control over the affected system. The unspecified vectors suggest that the vulnerability could be triggered through various input points within the payment module configuration or transaction processing workflows.
The operational impact of this vulnerability extends far beyond simple code execution capabilities. Successful exploitation allows attackers to gain full administrative control over the payment processing infrastructure, potentially enabling them to manipulate transaction records, steal sensitive payment information, modify customer data, or even redirect payment flows to malicious endpoints. The implications for e-commerce businesses are particularly severe as payment processing modules typically handle sensitive financial data and customer information, making this vulnerability a prime target for financial fraud and data breaches. Organizations using affected versions face risks of regulatory compliance violations, financial losses, and reputational damage that could persist long after the initial compromise.
Security mitigations for this vulnerability should focus on immediate version upgrades to patched releases of the affected payment modules, as these typically contain proper input validation and sanitization measures. Organizations should also implement network segmentation to limit administrative access to payment processing systems and deploy comprehensive monitoring solutions to detect unusual activity patterns that might indicate exploitation attempts. The remediation process must include thorough validation of all input parameters within payment processing workflows and implementation of proper output encoding to prevent code injection attacks. Additionally, organizations should consider implementing web application firewalls and conducting regular security assessments to identify similar vulnerabilities within their payment processing infrastructure, as this issue demonstrates the importance of maintaining up-to-date security practices in e-commerce platforms. The vulnerability also highlights the need for robust security testing methodologies that include both automated scanning and manual penetration testing of critical business logic components such as payment processing modules.