CVE-2012-4236 in eCommerce
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the refresh_page function in application/modules/_main/views/_top.php in Total Shop UK eCommerce Open Source before 2.1.2_p1 allows remote attackers to inject arbitrary web script or HTML via the PATH_INFO.
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Analysis
by VulDB Data Team • 05/08/2025
The vulnerability described in CVE-2012-4236 represents a classic cross-site scripting flaw within the Total Shop UK eCommerce platform, specifically targeting the refresh_page function located in application/modules/_main/views/_top.php. This issue affects versions prior to 2.1.2_p1 and demonstrates a critical weakness in input validation and output encoding practices. The vulnerability arises from the improper handling of the PATH_INFO parameter, which is directly incorporated into the page rendering process without adequate sanitization or encoding mechanisms.
The technical exploitation of this vulnerability occurs through the manipulation of the PATH_INFO server variable, which contains the path information portion of a URL. When attackers craft malicious requests with specially formatted PATH_INFO values, the application fails to properly escape or encode these inputs before rendering them in the HTML output. This creates an environment where arbitrary JavaScript code or HTML content can be injected into the page, allowing attackers to execute malicious scripts within the context of other users' browsers. The flaw operates at the presentation layer of the application, making it particularly dangerous as it can be leveraged to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious sites.
The operational impact of this vulnerability extends beyond simple script injection, as it enables sophisticated attack vectors that can compromise user sessions and data integrity. Attackers can leverage this weakness to perform session hijacking, steal sensitive user information, or manipulate the application's behavior to redirect users to phishing sites. The vulnerability affects the core functionality of the eCommerce platform's top navigation area, meaning that any user accessing pages that utilize the refresh_page function could be exposed to malicious content. This presents a significant risk to both customer data and business operations, as compromised user sessions could lead to financial losses and reputational damage. The vulnerability is particularly concerning because it requires no authentication to exploit and can be triggered through standard web browsing activities.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and output encoding mechanisms throughout the application's codebase. The most effective immediate fix involves sanitizing all user-controllable input parameters, particularly those derived from PATH_INFO, before incorporating them into HTML output. This approach aligns with CWE-79 which categorizes cross-site scripting vulnerabilities and recommends input validation as a primary defense mechanism. Organizations should also implement Content Security Policy headers to add an additional layer of protection against script injection attacks. The recommended long-term solution includes upgrading to version 2.1.2_p1 or later, which contains the necessary patches to address this vulnerability. Security teams should also conduct comprehensive code reviews to identify similar patterns of insecure input handling and implement automated scanning tools to detect potential XSS vulnerabilities in other parts of the application. This vulnerability exemplifies the importance of following secure coding practices and adhering to the principle of least privilege in web application development, as outlined in various security frameworks including the OWASP Top Ten and NIST cybersecurity guidelines.