CVE-2009-1820 in Custom T-shirt Design Script
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in product.php in 2daybiz Custom T-shirt Design Script allows remote attackers to inject arbitrary web script or HTML via the id parameter.
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Analysis
by VulDB Data Team • 11/29/2024
The CVE-2009-1820 vulnerability represents a classic cross-site scripting flaw within the 2daybiz Custom T-shirt Design Script, specifically affecting the product.php component. This vulnerability manifests when the application fails to properly sanitize user input passed through the id parameter, creating an exploitable vector for malicious actors to inject arbitrary web scripts or HTML content. The flaw exists at the application layer where input validation mechanisms are insufficient to prevent potentially harmful code execution within the context of other users' browsers. The vulnerability classifies under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications, making it a well-documented and commonly exploited weakness in web security.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing script code within the id parameter of the product.php script. When a victim accesses this specially crafted link, the malicious code executes within the victim's browser session, potentially stealing session cookies, redirecting to malicious sites, or performing actions on behalf of the authenticated user. The vulnerability is particularly dangerous because it operates entirely on the client-side without requiring server-side compromise, making it difficult to detect through traditional network monitoring. The flaw demonstrates poor input validation and output encoding practices that are fundamental to preventing XSS attacks according to industry security standards.
The operational impact of CVE-2009-1820 extends beyond simple script injection, as it can enable attackers to perform session hijacking, deface websites, redirect users to phishing sites, or even execute more sophisticated attacks through the exploitation of other vulnerabilities. The compromised application could serve as a launching point for further attacks within the network, particularly if the affected system handles sensitive user data or authentication tokens. From an attacker perspective, this vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, specifically web shell execution, and T1566 for Phishing, as it can be leveraged to create convincing malicious web content. The vulnerability affects not only the immediate application but also potentially impacts user trust and brand reputation.
Mitigation strategies for CVE-2009-1820 should focus on implementing robust input validation and output encoding mechanisms throughout the application. The most effective approach involves sanitizing all user-provided input through proper parameter validation, implementing context-specific output encoding, and employing Content Security Policy headers to limit script execution. Developers should utilize parameterized queries and input sanitization libraries to prevent malicious code injection. The vulnerability demonstrates the critical importance of following secure coding practices as outlined in OWASP Top Ten and NIST cybersecurity guidelines. Regular security assessments, including automated vulnerability scanning and manual penetration testing, should be conducted to identify similar weaknesses in web applications. Additionally, implementing proper error handling and logging mechanisms can help detect exploitation attempts and provide forensic evidence for incident response activities.