CVE-2008-6683 in Apartment Search Script
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in listtest.php in Apartment Search Script allows remote attackers to inject arbitrary web script or HTML via the r parameter.
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Analysis
by VulDB Data Team • 11/10/2024
The CVE-2008-6683 vulnerability represents a classic cross-site scripting flaw within the Apartment Search Script's listtest.php component, demonstrating a critical weakness in input validation and output encoding practices. This vulnerability specifically targets the r parameter, which serves as an entry point for malicious actors to inject arbitrary web scripts or HTML content into the application's response. The flaw exists because the script fails to properly sanitize or escape user-supplied input before incorporating it into dynamically generated web pages, creating an environment where attacker-controlled data can be executed within the context of other users' browsers. The vulnerability operates under the Common Weakness Enumeration framework as CWE-79, which classifies it as a "Cross-site Scripting" weakness, specifically categorized as a "Reflected" XSS variant since the malicious payload is reflected back to users through the vulnerable parameter.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it provides attackers with the capability to establish persistent malicious sessions within the application environment. When a victim accesses a page containing the malicious payload, the injected script executes within their browser context, potentially allowing attackers to steal session cookies, perform actions on behalf of users, or redirect them to malicious sites. The reflected nature of this vulnerability means that attackers must lure victims to click on crafted links containing the malicious payload, typically through phishing emails, social engineering campaigns, or compromised website content. This vulnerability directly maps to ATT&CK technique T1566.001, which describes the use of spearphishing attachments to gain initial access to systems, as attackers often exploit such vulnerabilities through carefully crafted URLs that appear legitimate to end users.
Mitigation strategies for CVE-2008-6683 must focus on implementing robust input validation and output encoding mechanisms throughout the application's codebase. The most effective approach involves sanitizing all user input parameters, particularly those used in dynamic page generation, by employing context-appropriate encoding techniques such as HTML entity encoding for output contexts. Additionally, developers should implement proper parameter validation using allowlists of acceptable input values rather than denylists, which are inherently flawed due to the infinite nature of potential malicious inputs. The application should also implement Content Security Policy headers to limit the sources from which scripts can be loaded, providing an additional layer of protection against XSS attacks. Security measures should include regular code reviews focusing on input handling, automated vulnerability scanning during development cycles, and comprehensive testing of all user-facing parameters to ensure that no similar injection vectors exist within the application architecture. The vulnerability also highlights the importance of adhering to secure coding practices as outlined in OWASP Top Ten security guidelines, specifically addressing the need for proper input validation and output encoding to prevent injection attacks.