CVE-2002-2347 in Application Server
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Oracle Java Server Page (OJSP) demo files (1) hellouser.jsp, (2) welcomeuser.jsp and (3) usebean.jsp in Oracle 9i Application Server 9.0.2, 1.0.2.2, 1.0.2.1s and 1.0.2 allows remote attackers to inject arbitrary web script or HTML via the text entry field.
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Analysis
by VulDB Data Team • 08/28/2025
The CVE-2002-2347 vulnerability represents a critical cross-site scripting flaw discovered in Oracle's Java Server Pages implementation within the Oracle 9i Application Server. This vulnerability specifically affects demo files including hellouser.jsp, welcomeuser.jsp, and usebean.jsp across multiple versions of the Oracle 9i Application Server, namely 9.0.2, 1.0.2.2, 1.0.2.1s, and 1.0.2. The flaw stems from insufficient input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before rendering it within web pages. According to CWE-79, this vulnerability falls under the category of Cross-Site Scripting, which is a common web application security weakness that allows attackers to inject malicious scripts into web pages viewed by other users.
The technical exploitation of this vulnerability occurs when remote attackers submit malicious input through text entry fields in the affected demo pages. These input fields do not properly validate or escape user-provided content, allowing attackers to inject arbitrary HTML or JavaScript code that gets executed in the context of other users' browsers. The vulnerability specifically targets the user input handling mechanisms within the Oracle 9i Application Server's JSP processing environment, where the server fails to implement proper sanitization before displaying user-entered data. This creates a persistent threat vector that can be exploited to perform various malicious activities including session hijacking, credential theft, and redirection to malicious websites.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with the ability to compromise user sessions and potentially gain unauthorized access to sensitive application data. When users interact with the vulnerable demo pages, any malicious scripts injected by attackers can execute within their browser context, potentially stealing session cookies, modifying page content, or redirecting users to phishing sites. The vulnerability is particularly concerning because it affects demonstration files that are typically accessible to all users without authentication requirements, making exploitation relatively straightforward and widespread. From an ATT&CK framework perspective, this vulnerability maps to T1566 - Phishing and T1071.001 - Application Layer Protocol: Web Protocols, as it enables attackers to leverage web-based attack vectors to compromise user systems.
Mitigation strategies for CVE-2002-2347 should focus on implementing proper input validation and output encoding mechanisms throughout the application. Organizations should immediately apply Oracle's security patches and updates that address this vulnerability in their Oracle 9i Application Server installations. Additionally, developers should implement comprehensive input sanitization routines that escape special characters and validate all user-supplied data before processing. The implementation of Content Security Policy headers and proper HTML encoding for dynamic content can significantly reduce the risk of exploitation. Security teams should also conduct thorough code reviews of all JSP files to identify and remediate similar vulnerabilities in custom applications. Regular security assessments and penetration testing should be performed to ensure that input validation mechanisms remain effective against evolving attack techniques. The vulnerability demonstrates the critical importance of secure coding practices and input validation in web application development, as highlighted by industry standards such as OWASP Top Ten and NIST cybersecurity frameworks that emphasize the prevention of injection attacks through proper data sanitization and validation techniques.