CVE-2006-3235 in FineShop
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in index.php in FineShop 3.0 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) promocja, (2) wysw, or (3) id_produc parameters.
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Analysis
by VulDB Data Team • 07/29/2018
The CVE-2006-3235 vulnerability represents a critical cross-site scripting flaw discovered in FineShop version 3.0 and earlier, affecting the index.php script within the web application framework. This vulnerability resides in the application's input validation mechanisms, specifically targeting three distinct parameter fields that process user-supplied data without proper sanitization or encoding. The affected parameters promocja, wysw, and id_produc serve as entry points for malicious actors to inject arbitrary web scripts or HTML content into the application's response handling. This flaw directly violates fundamental web security principles and represents a classic example of insufficient input validation, which is categorized under CWE-79 as "Cross-site Scripting" and falls within the broader category of CWE-20 "Improper Input Validation." The vulnerability's impact extends beyond simple script injection, as it provides attackers with the capability to execute malicious code within the context of authenticated users' browsers, potentially leading to session hijacking, credential theft, or further exploitation of the web application.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input containing HTML or JavaScript code and submits it through any of the three vulnerable parameters. The application fails to properly escape or sanitize these inputs before rendering them in the web page response, allowing the injected code to execute in the victim's browser context. This type of vulnerability is particularly dangerous because it can be leveraged to perform actions on behalf of authenticated users, potentially compromising the integrity of the web application and the security of user data. The flaw demonstrates poor output encoding practices and inadequate security controls during data processing, aligning with ATT&CK technique T1059.001 for Command and Scripting Interpreter and T1566.001 for Phishing as attackers can use this vulnerability to redirect users to malicious sites or steal session cookies. The vulnerability affects the application's core functionality by creating an attack surface that allows for persistent malicious code execution, potentially enabling attackers to establish backdoors or exfiltrate sensitive information from users who interact with the compromised application.
The operational impact of CVE-2006-3235 extends beyond immediate script injection capabilities, as it creates a persistent security risk that can be exploited for various malicious activities including session fixation attacks, data exfiltration, and user impersonation. Attackers can leverage this vulnerability to craft sophisticated phishing campaigns that appear legitimate to users, as the injected scripts can manipulate the user interface to deceive victims into revealing sensitive information or performing unintended actions. The vulnerability also presents significant risk to the application's reputation and user trust, as successful exploitation can result in widespread compromise of user accounts and sensitive data exposure. Organizations utilizing affected versions of FineShop face potential regulatory compliance violations and security audit failures due to the presence of this unpatched vulnerability. The attack surface created by this flaw can be exploited in conjunction with other vulnerabilities to create more sophisticated attack chains, potentially leading to full system compromise. Security professionals should consider this vulnerability as a potential entry point for lateral movement within networks and recommend immediate remediation to prevent exploitation.
Mitigation strategies for CVE-2006-3235 should prioritize immediate patching of the affected FineShop versions to address the core input validation issues. Organizations must implement comprehensive input sanitization and output encoding mechanisms across all user-supplied parameters to prevent malicious code injection. The recommended approach includes implementing strict parameter validation, using context-specific output encoding, and deploying web application firewalls to detect and block malicious payloads. Security measures should also include regular security assessments and code reviews to identify similar vulnerabilities in other application components. The implementation of Content Security Policy headers can provide additional protection against script execution, while proper session management and authentication controls should be reinforced to limit the impact of potential exploitation. Organizations should also establish incident response procedures specifically designed to handle XSS vulnerabilities, ensuring rapid detection and remediation of similar security flaws. The vulnerability underscores the importance of maintaining current security practices and the necessity of regular vulnerability assessments to identify and remediate security gaps in web applications.