CVE-2014-2006 in Web Kyukincho
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Intercom Web Kyukincho 3.x before 3.0.030 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 03/07/2018
The CVE-2014-2006 vulnerability represents a critical cross-site scripting flaw affecting Intercom Web Kyukincho version 3.x prior to 3.0.030. This vulnerability falls under the CWE-79 category of Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly sanitize user input before incorporating it into web page content. The vulnerability enables remote attackers to execute arbitrary web scripts or HTML code within the context of affected users' browsers, creating a significant security risk for organizations relying on this web application framework.
The technical nature of this XSS vulnerability stems from insufficient input validation and output encoding mechanisms within the Intercom Web Kyukincho application. Attackers can exploit unspecified vectors to inject malicious scripts that persist in the application's data storage or processing mechanisms. When legitimate users view pages containing the injected content, their browsers execute the malicious code, potentially leading to session hijacking, data theft, or further exploitation of the victim's browser environment. The vulnerability's impact is amplified by its remote nature, allowing attackers to compromise users without requiring physical access to the target system.
The operational impact of this vulnerability extends beyond simple script execution, as it creates opportunities for more sophisticated attacks within the targeted environment. Attackers can leverage this vulnerability to steal session cookies, redirect users to malicious sites, deface web pages, or perform actions on behalf of authenticated users. The persistence of the vulnerability across multiple versions indicates a fundamental flaw in the application's input handling architecture that required a major version update to address. Organizations utilizing this software faced potential exposure to credential theft, data exfiltration, and unauthorized administrative actions that could compromise entire web applications.
Security mitigations for this vulnerability primarily involve immediate patching to version 3.0.030 or later, which addresses the underlying input validation deficiencies. Organizations should implement comprehensive input sanitization measures, including proper HTML encoding of all user-supplied content before rendering in web pages. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting script execution within the application context. Regular security assessments and input validation reviews should be conducted to identify similar vulnerabilities in other web applications, aligning with ATT&CK technique T1059.001 for command and scripting interpreter execution. Network monitoring and intrusion detection systems should be configured to detect suspicious script injection patterns, while user education about recognizing and reporting potentially malicious web content remains essential for comprehensive defense strategies.