CVE-2013-5992 in EC-CUBE
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the displaySystemError function in html/handle_error.php in LOCKON EC-CUBE 2.11.0 through 2.11.5 allows remote attackers to inject arbitrary web script or HTML by leveraging incorrect handling of error-message output.
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Analysis
by VulDB Data Team • 03/02/2019
The CVE-2013-5992 vulnerability represents a critical cross-site scripting flaw within the LOCKON EC-CUBE e-commerce platform version 2.11.0 through 2.11.5. This vulnerability specifically resides in the displaySystemError function located within the html/handle_error.php file, demonstrating a fundamental weakness in how the application processes and renders error messages. The flaw occurs when the system encounters errors during operation and attempts to display error information to users, creating an exploitable condition that can be leveraged by malicious actors.
The technical implementation of this vulnerability stems from inadequate input sanitization and output encoding within the error handling mechanism. When the system generates error messages, it fails to properly escape or filter user-controllable data that may be present in the error context. This improper handling allows attackers to inject malicious script code directly into the error output, which then gets executed in the victim's browser when the error page is rendered. The vulnerability manifests as a classic reflected XSS attack where the malicious payload is embedded within the error message itself, bypassing normal security controls that might protect against direct input validation.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it provides attackers with a means to execute arbitrary code within the context of authenticated users. This creates significant risks for e-commerce platforms where user sessions are maintained, potentially allowing attackers to access sensitive customer data, modify product information, manipulate transactions, or redirect users to malicious sites. The vulnerability affects the entire application stack since error handling is a universal component that occurs regardless of the user's privilege level or specific application path being accessed.
Security professionals should recognize this vulnerability as a direct violation of CWE-79, which specifically addresses cross-site scripting flaws in software applications. The ATT&CK framework categorizes this as a technique for code injection within the execution phase, potentially leading to privilege escalation and persistence mechanisms. Organizations running affected versions of EC-CUBE should prioritize immediate patching and implementation of input validation measures, including the deployment of web application firewalls and enhanced output encoding protocols. The vulnerability underscores the critical importance of secure error handling practices and demonstrates how seemingly benign system components can become attack vectors when proper security controls are not implemented. Remediation efforts should include comprehensive code review of all error handling functions, implementation of strict input validation, and deployment of automated security scanning tools to identify similar vulnerabilities within the application codebase.