CVE-2006-3088 in Car Classifieds
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in Car Classifieds allows remote attackers to inject arbitrary web script or HTML via the make_id parameter. NOTE: the provenance of this information is unknown; the details are obtained from third party information.
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Analysis
by VulDB Data Team • 09/16/2017
The vulnerability described in CVE-2006-3088 represents a classic cross-site scripting flaw within the Car Classifieds web application, specifically targeting the index.php script. This type of vulnerability falls under the broader category of injection attacks and is classified as CWE-79 according to the Common Weakness Enumeration framework. The vulnerability manifests when the application fails to properly sanitize user input before incorporating it into dynamically generated web content, creating an exploitable entry point for malicious actors to execute arbitrary scripts within the context of other users' browsers.
The technical exploitation occurs through the make_id parameter within the index.php file, which serves as the primary attack vector for this XSS vulnerability. When an attacker submits malicious input through this parameter, the web application processes the data without adequate validation or sanitization mechanisms, allowing the injected script to be stored and subsequently executed when other users view the affected page. This particular vulnerability is categorized as a reflected XSS attack since the malicious payload is reflected back to users through the web application's response, rather than being stored permanently in a database or file system.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, and redirection to malicious websites. The attacker can leverage this vulnerability to impersonate legitimate users within the application, potentially gaining unauthorized access to sensitive information or performing unauthorized actions on behalf of other users. This threat is particularly concerning for classified advertising platforms where users may trust the application's content and interact with it regularly, increasing the potential attack surface and user exposure.
From a defensive perspective, the remediation approach should focus on implementing robust input validation and output encoding mechanisms. The application should employ proper parameter sanitization techniques that strip or encode potentially dangerous characters before processing user input. Additionally, implementing a content security policy can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded. Security practitioners should also consider implementing proper access controls and monitoring mechanisms to detect unusual patterns of input that may indicate attempted exploitation. The vulnerability underscores the critical importance of following secure coding practices and adhering to established security frameworks such as those recommended by the Open Web Application Security Project. This particular vulnerability aligns with ATT&CK technique T1566.001 which covers the use of cross-site scripting techniques for initial access and privilege escalation within web applications.