CVE-2009-2445 in Java System Web Server
Summary
by MITRE
Oracle iPlanet Web Server (formerly Sun Java System Web Server or Sun ONE Web Server) 6.1 before SP12, and 7.0 through Update 6, when running on Windows, allows remote attackers to read arbitrary JSP files via an alternate data stream syntax, as demonstrated by a .jsp::$DATA URI.
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Analysis
by VulDB Data Team • 08/12/2021
The vulnerability described in CVE-2009-2445 affects Oracle iPlanet Web Server versions 6.1 before SP12 and 7.0 through Update 6 when operating on Windows platforms. This security flaw represents a significant information disclosure vulnerability that exploits the underlying Windows file system architecture to bypass normal access controls. The issue specifically leverages the alternate data streams (ADS) feature inherent to Windows NTFS file systems, which allows multiple data streams to be associated with a single file. This capability enables attackers to access files that would normally be protected or restricted through standard web server access controls.
The technical exploitation mechanism involves using the Windows NTFS alternate data stream syntax to read JSP files that contain sensitive information such as source code, configuration parameters, or application logic. The attack demonstrates the use of a .jsp::$DATA URI pattern that allows remote adversaries to retrieve the contents of JSP files through the web server interface. This technique bypasses traditional file access restrictions because the alternate data stream functionality operates at the file system level rather than the web server access control level. The vulnerability specifically affects Windows implementations where the web server processes these URI patterns without proper validation or sanitization, allowing arbitrary file access through the web interface.
From an operational impact perspective, this vulnerability presents a severe risk to organizations relying on Oracle iPlanet Web Server for hosting web applications. Attackers can potentially extract source code from JSP files, which may contain sensitive business logic, database connection strings, authentication mechanisms, and other proprietary information. The exposure of application source code provides attackers with detailed insights into the application architecture, potentially enabling more sophisticated attacks such as injection vulnerabilities, authentication bypasses, or privilege escalation techniques. Additionally, the ability to read configuration files through this mechanism could reveal database credentials, API keys, or other sensitive parameters that are critical for system security.
The vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, and represents a classic example of path traversal or file inclusion attacks that exploit operating system features rather than web server configuration flaws. This type of vulnerability also maps to ATT&CK technique T1213.002, which involves accessing data through web shell or file system access, and T1566.001, which covers phishing with malicious attachments or links that could leverage such file system access capabilities. Organizations should consider implementing comprehensive file system access controls, regular security assessments, and proper input validation to prevent exploitation of similar vulnerabilities in their web server configurations.
Mitigation strategies for this vulnerability include applying the appropriate Oracle patches and updates, specifically SP12 for version 6.1 and Update 6 for version 7.0 of the Oracle iPlanet Web Server. Organizations should also implement proper access controls and file system permissions to limit access to sensitive web content, particularly on Windows systems where alternate data streams are available. Network segmentation and web application firewalls can provide additional layers of protection by monitoring and filtering requests that attempt to access file system resources through web interfaces. Regular security audits and penetration testing should be conducted to identify and remediate similar vulnerabilities in web server configurations, ensuring that all file access mechanisms properly validate and sanitize input parameters to prevent exploitation of operating system features that could bypass traditional security controls.