CVE-2011-2675 in Enkai
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Enkai-kun before 110916 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 02/12/2019
The CVE-2011-2675 vulnerability represents a critical cross-site scripting flaw discovered in the Enkai-kun web application prior to version 110916. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which is one of the most prevalent and dangerous web application security weaknesses. The vulnerability allows remote attackers to inject malicious web scripts or HTML content into the application, potentially compromising user sessions and data integrity. The unspecified vectors suggest that the flaw could be exploited through multiple entry points within the application's input handling mechanisms, making it particularly challenging to defend against. The vulnerability's severity is compounded by its ability to affect users without requiring any special privileges or authentication, as it operates at the application layer where user input is processed and rendered.
The technical implementation of this XSS vulnerability stems from inadequate input validation and output encoding mechanisms within the Enkai-kun application. When users submit data through various forms, parameters, or other input methods, the application fails to properly sanitize or encode the input before rendering it in web pages. This allows attackers to inject malicious scripts that execute in the context of other users' browsers. The vulnerability's impact extends beyond simple script execution, as it can be leveraged to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious websites. The lack of specific vector details in the original description indicates that the flaw likely exists in multiple areas of the application's codebase, potentially affecting various user-facing components and functionality.
The operational impact of CVE-2011-2675 is significant for any organization relying on the Enkai-kun application, as it creates a persistent security risk that can be exploited by attackers with minimal technical expertise. Users interacting with the vulnerable application may unknowingly execute malicious code, leading to potential data breaches, session hijacking, and unauthorized access to sensitive information. The vulnerability's remote nature means that attackers can exploit it from anywhere on the internet without requiring physical access to the target system. This makes the attack surface extremely broad and the potential for widespread exploitation considerable. Organizations may face regulatory compliance issues, reputational damage, and financial losses due to the compromised security posture. The vulnerability also demonstrates the importance of regular security assessments and patch management processes to prevent such flaws from remaining undetected for extended periods.
Mitigation strategies for CVE-2011-2675 must address both immediate remediation and long-term security improvements. The primary solution involves updating to Enkai-kun version 110916 or later, which contains the necessary patches to prevent input sanitization failures. Organizations should implement comprehensive input validation mechanisms that reject or sanitize potentially dangerous characters and script tags before processing user input. Output encoding should be implemented consistently throughout the application to ensure that any malicious content is rendered harmless when displayed to users. Security headers such as Content Security Policy should be configured to limit script execution and prevent unauthorized code injection. Regular security testing including automated scanning and manual penetration testing should be conducted to identify similar vulnerabilities in other applications. This vulnerability aligns with ATT&CK technique T1203, which focuses on Exploitation for Client Execution, and demonstrates the critical need for defense in depth strategies that protect against both known and emerging threats in web applications.