CVE-2008-0899 in WebLogic Server
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Administration Console in BEA WebLogic Server and Express 9.0 through 10.0 allows remote attackers to inject arbitrary web script or HTML via URLs that are not properly handled by the Unexpected Exception Page.
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Analysis
by VulDB Data Team • 08/05/2019
The CVE-2008-0899 vulnerability represents a critical cross-site scripting flaw within the BEA WebLogic Server and Express 9.0 through 10.0 platforms, specifically affecting the Administration Console component. This vulnerability arises from improper handling of URLs within the Unexpected Exception Page mechanism, creating a pathway for remote attackers to execute malicious web scripts or HTML code within the context of legitimate user sessions. The flaw fundamentally compromises the security boundaries of the administration interface, potentially allowing attackers to escalate privileges and gain unauthorized access to sensitive system configurations and data.
The technical exploitation of this vulnerability occurs when the administration console fails to properly sanitize or encode URL parameters before displaying them in error pages or exception handling routines. When an unexpected exception occurs during user interaction with the console, the system generates an Unexpected Exception Page that displays information about the error, including potentially malicious URL parameters. This lack of proper input validation and output encoding creates a persistent XSS vector that can be leveraged by remote attackers who craft malicious URLs containing script payloads. The vulnerability specifically targets the web application's error handling mechanisms rather than core application logic, making it particularly insidious as it operates within legitimate system error reporting pathways.
The operational impact of this vulnerability extends beyond simple script execution, as it enables attackers to manipulate administrative sessions and potentially compromise the entire WebLogic server infrastructure. An attacker could inject malicious scripts that steal session cookies, redirect users to phishing sites, or execute commands within the context of the administrator's privileges. This vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws, and represents a classic example of how improper input handling in web applications can lead to severe security consequences. The attack surface is particularly concerning given that the Administration Console typically operates with elevated privileges, making successful exploitation potentially devastating for enterprise environments relying on WebLogic Server for critical business applications.
Mitigation strategies for CVE-2008-0899 should focus on implementing comprehensive input validation and output encoding mechanisms within the WebLogic server's exception handling components. Organizations should ensure that all URL parameters and user-supplied inputs are properly sanitized before being displayed in error pages or administrative interfaces. The recommended approach includes implementing strict content security policies, utilizing proper HTML encoding for all dynamic content, and ensuring that the Unexpected Exception Page does not display raw user input without adequate sanitization. Additionally, network segmentation and access controls should be implemented to limit exposure of the administration console to trusted networks only, while regular security assessments should verify that all error handling paths properly validate and encode input data. This vulnerability demonstrates the critical importance of securing all application components, including error handling mechanisms, as these pathways often receive less security scrutiny during development and deployment phases.