CVE-2012-5177 in Welcart plugin
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Welcart plugin before 1.2.2 for WordPress allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 02/05/2018
The CVE-2012-5177 vulnerability represents a critical cross-site scripting flaw discovered in the Welcart plugin for WordPress systems prior to version 1.2.2. This vulnerability falls under the CWE-79 category, which specifically addresses cross-site scripting attacks where malicious scripts can be injected into web applications. The Welcart plugin, designed for e-commerce functionality within WordPress environments, contained a weakness that allowed remote attackers to execute arbitrary web scripts or HTML code through unspecified input vectors. The vulnerability's impact extends beyond simple script injection as it creates a persistent threat vector that can compromise user sessions and data integrity within affected WordPress installations.
The technical exploitation of this XSS vulnerability occurs when malicious actors leverage the plugin's input handling mechanisms to inject malicious payloads into web pages viewed by other users. These payloads can range from simple JavaScript code to more sophisticated attack vectors designed to steal cookies, session tokens, or redirect users to malicious sites. The unspecified nature of the attack vectors suggests that multiple input points within the plugin's codebase were susceptible to injection attacks, potentially including form fields, URL parameters, or user-generated content handling mechanisms. The vulnerability's classification as a remote attack vector means that no local access or authentication is required to exploit the flaw, making it particularly dangerous for widespread deployment.
The operational impact of CVE-2012-5177 extends significantly beyond the immediate technical concerns of script injection. When exploited, this vulnerability can lead to complete compromise of user accounts through session hijacking, data exfiltration, and the potential for further attack escalation within the WordPress environment. Attackers can leverage the XSS vulnerability to modify content on the affected websites, inject malicious advertisements, or redirect users to phishing sites that can harvest sensitive information. The vulnerability also creates opportunities for attackers to establish persistent backdoors within WordPress installations, as the injected scripts can maintain execution across multiple user sessions and page views. This makes the vulnerability particularly concerning for e-commerce sites that rely on the Welcart plugin for transaction processing and customer data management.
Security mitigation strategies for CVE-2012-5177 primarily focus on immediate remediation through plugin updates to version 1.2.2 or later, which would contain the necessary code modifications to prevent input sanitization failures. Organizations should implement comprehensive input validation and output encoding measures across all plugin components to prevent future vulnerabilities of similar nature. The implementation of Content Security Policy (CSP) headers can provide additional protection layers against XSS attacks by restricting the sources from which scripts can be loaded and executed. Network monitoring solutions should be configured to detect suspicious script injection patterns and anomalous user behavior that might indicate exploitation attempts. Additionally, regular security audits of WordPress plugins and themes are essential to identify and remediate similar vulnerabilities before they can be exploited by malicious actors, as this vulnerability demonstrates the importance of maintaining up-to-date software components within WordPress ecosystems. The ATT&CK framework categorizes this vulnerability under the T1059 technique for command and control through scripting, emphasizing the need for robust input sanitization and output encoding practices as recommended by security best practices.