CVE-2008-0684 in iTechClassifieds
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in ViewCat.php in iTechClassifieds 3.0 allows remote attackers to inject arbitrary web script or HTML via the CatID parameter.
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Analysis
by VulDB Data Team • 07/26/2025
The CVE-2008-0684 vulnerability represents a classic cross-site scripting flaw in the iTechClassifieds 3.0 web application, specifically within the ViewCat.php script. This vulnerability falls under the CWE-79 category of Cross-Site Scripting and demonstrates how improper input validation can create dangerous attack vectors for remote threat actors. The vulnerability manifests when the application fails to properly sanitize user-supplied input passed through the CatID parameter, allowing malicious scripts to be executed in the context of other users' browsers.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious URL containing crafted script code within the CatID parameter value. When a victim navigates to this specially crafted URL, the vulnerable application processes the input without adequate sanitization or encoding, subsequently rendering the malicious script within the page context. This creates a persistent threat where the injected code executes in the victim's browser session, potentially leading to session hijacking, credential theft, or redirection to malicious sites. 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 operational impact of CVE-2008-0684 extends beyond simple script injection, as it can enable more sophisticated attacks within the context of the targeted web application. Attackers can leverage this vulnerability to steal session cookies, redirect users to phishing sites, deface the classifieds website, or even escalate privileges if the application has administrative functions accessible through the same vulnerable endpoint. The attack surface is particularly concerning for classifieds platforms where user trust and data integrity are paramount, as users may unknowingly become victims of social engineering attacks initiated through the XSS vector. This vulnerability also aligns with ATT&CK technique T1566.001 for initial access through malicious web content, and T1059.007 for command and scripting interpreter through web shells or malicious scripts.
Mitigation strategies for CVE-2008-0684 must focus on implementing robust input validation and output encoding practices throughout the application. The primary defense involves sanitizing all user-supplied input through proper parameter validation and implementing context-specific output encoding before rendering any user data. Organizations should deploy web application firewalls to detect and block suspicious input patterns, while also implementing content security policies to prevent execution of unauthorized scripts. Additionally, the application should utilize proper parameterized queries and input validation routines to ensure that the CatID parameter only accepts legitimate numeric values. Regular security audits, code reviews, and penetration testing should be conducted to identify similar vulnerabilities within the application's codebase, as this vulnerability represents a common pattern that may exist in other parameters or scripts within the same application. The remediation process should also include updating to patched versions of iTechClassifieds or implementing proper input sanitization measures as a temporary workaround until a formal security update is available.