CVE-2007-2547 in SunShop Shopping Cart
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in TurnkeyWebTools SunShop Shopping Cart 4.0 allows remote attackers to inject arbitrary web script or HTML via the l parameter.
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Analysis
by VulDB Data Team • 12/27/2025
The vulnerability identified as CVE-2007-2547 represents a classic cross-site scripting flaw within the TurnkeyWebTools SunShop Shopping Cart version 4.0. This type of vulnerability falls under the broader category of CWE-79 Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly sanitize user input before incorporating it into web page content. The vulnerability manifests in the index.php script where the l parameter is processed without adequate input validation or output encoding, creating an exploitable vector for malicious actors to inject arbitrary web scripts or HTML content into the application's response.
The technical implementation of this vulnerability allows remote attackers to manipulate the l parameter through HTTP requests, bypassing the application's normal input sanitization mechanisms. When the application processes this parameter and includes it directly in the generated HTML response without proper encoding or filtering, it creates an environment where malicious JavaScript code can be executed within the context of other users' browsers. This occurs because the application fails to implement proper output encoding techniques that would neutralize potentially harmful input before it reaches the end user's browser. The vulnerability is particularly concerning as it operates at the web application layer and can be exploited through standard web browser interactions without requiring any special privileges or access to the underlying system.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it can enable attackers to perform session hijacking, redirect users to malicious websites, or steal sensitive information from authenticated users. The attack surface is significant since the vulnerability affects a core shopping cart functionality that likely handles user interactions, product listings, and potentially user-generated content. Users who browse pages containing the vulnerable parameter could unknowingly execute malicious code, potentially compromising their browsing sessions and exposing personal information. The vulnerability also aligns with ATT&CK technique T1566.001 Phishing via Social Media, as attackers could craft malicious URLs that exploit this vulnerability to deliver payloads to unsuspecting users through social media platforms or other web-based communication channels.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and output encoding mechanisms throughout the application. The primary defense involves sanitizing all user-provided input, particularly parameters like l that are directly incorporated into web page content. This can be achieved through the implementation of strict input validation that rejects or removes potentially harmful characters and sequences, combined with proper output encoding that converts special characters into their HTML-safe equivalents. Additionally, developers should implement Content Security Policy headers to limit the sources from which scripts can be loaded, providing an additional layer of protection against malicious script execution. The vulnerability also highlights the importance of regular security testing including dynamic application security testing and manual code review processes that can identify similar input handling flaws in web applications. Organizations should also consider implementing web application firewalls that can detect and block malicious payloads attempting to exploit XSS vulnerabilities, though such solutions should complement rather than replace proper input validation at the application level.