CVE-2009-2228 in Kasseler
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in engine.php in Kasseler CMS allows remote attackers to inject arbitrary web script or HTML via the url parameter in a redirect action.
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Analysis
by VulDB Data Team • 12/01/2024
The CVE-2009-2228 vulnerability represents a classic cross-site scripting flaw within the Kasseler Content Management System that demonstrates the persistent dangers of inadequate input validation in web applications. This vulnerability specifically resides in the engine.php file and manifests when the application processes the url parameter during a redirect operation, creating an exploitable vector that allows remote attackers to inject malicious code into web pages viewed by other users. The flaw occurs because the application fails to properly sanitize or escape user-supplied input before incorporating it into dynamic web content, enabling attackers to execute arbitrary scripts within the context of other users' browsers.
The technical nature of this vulnerability aligns with CWE-79 which defines cross-site scripting as a weakness where untrusted data is incorporated into web pages without proper validation or escaping mechanisms. The vulnerability operates through a redirect action that typically occurs when users navigate through the CMS interface, making it particularly dangerous as it can be triggered through normal user interactions. Attackers can craft malicious URLs containing script payloads in the url parameter that get executed when the redirect occurs, potentially stealing session cookies, defacing web pages, or redirecting users to malicious sites. The vulnerability is classified as a reflected XSS attack since the malicious script is reflected back to the user through the application's response rather than being stored on the server.
The operational impact of this vulnerability extends beyond simple script execution to encompass significant security risks for organizations using Kasseler CMS. When exploited successfully, the vulnerability can enable attackers to hijack user sessions, perform actions on behalf of authenticated users, and potentially gain unauthorized access to sensitive system resources. The attack surface is particularly concerning because it can be exploited through social engineering techniques, where users might be tricked into clicking malicious links that appear legitimate. The vulnerability affects all versions of Kasseler CMS that are susceptible to this specific input handling flaw, making it a widespread concern for organizations that have not updated their systems. This type of vulnerability also creates opportunities for attackers to establish persistent access through more sophisticated attack chains that leverage the initial XSS vector.
Mitigation strategies for CVE-2009-2228 should focus on immediate patching and input validation improvements to prevent similar vulnerabilities from occurring in the future. Organizations should implement proper output encoding and input sanitization techniques that ensure all user-supplied data is properly escaped before being incorporated into web page content. The fix typically involves modifying the engine.php file to sanitize the url parameter through proper escaping mechanisms or implementing strict input validation that rejects potentially malicious content. Additionally, organizations should consider implementing Content Security Policy headers to provide an additional layer of protection against XSS attacks, as outlined in the ATT&CK framework's techniques for defense evasion. Regular security audits and code reviews should be conducted to identify similar vulnerabilities in other parts of the application, and organizations should maintain updated security patches to protect against known vulnerabilities in third-party components. The vulnerability also underscores the importance of implementing proper web application firewalls and intrusion detection systems that can identify and block suspicious traffic patterns associated with XSS exploitation attempts.