CVE-2006-2311 in Bluedragon Server Jx
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in BlueDragon Server and Server JX 6.2.1.286 for Windows allows remote attackers to inject arbitrary web script or HTML via the filename in a request to a (1) .cfm or (2) .cfml file, which reflects the result in the default error page.
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Analysis
by VulDB Data Team • 06/21/2019
This cross-site scripting vulnerability exists in BlueDragon Server and Server JX versions 6.2.1.286 for Windows, representing a critical security flaw that enables remote attackers to execute malicious scripts within the context of affected web applications. The vulnerability specifically manifests when the application processes filename parameters in requests targeting .cfm or .cfml files, which are common ColdFusion markup language extensions used for web application development. When these parameters are not properly sanitized or validated, the application reflects the user-supplied input directly into the default error page without adequate output encoding or filtering mechanisms.
The technical implementation of this vulnerability follows the classic XSS attack pattern where malicious input is accepted through the filename parameter and subsequently displayed in the application's error handling mechanism. This creates an environment where attackers can inject arbitrary web scripts or HTML content that will execute in the browsers of unsuspecting users who encounter the reflected content. The vulnerability is particularly dangerous because it leverages the application's own error reporting functionality as the attack vector, making it more likely to succeed as the error page is typically displayed to users during normal application operation. According to CWE classification, this represents a CWE-79: Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security where user-controllable data is not properly sanitized before being included in web responses.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking, steal sensitive user information, redirect users to malicious websites, or even execute more sophisticated attacks through the exploitation of the reflected XSS payload. The attack requires no special privileges and can be executed through simple web requests, making it highly accessible to attackers with basic web security knowledge. The vulnerability affects the entire BlueDragon application server ecosystem, potentially compromising thousands of web applications that rely on this platform for their operations. Security professionals should note that this vulnerability aligns with ATT&CK technique T1566.001: Phishing, as attackers can craft malicious URLs that, when clicked by users, execute malicious code in their browsers through the reflected XSS mechanism.
Organizations affected by this vulnerability should implement immediate mitigations including input validation and output encoding for all user-supplied parameters, particularly those used in error handling contexts. The recommended approach involves sanitizing all filename inputs through proper validation techniques such as allowing only alphanumeric characters and specific safe characters while rejecting potentially malicious sequences. Additionally, implementing Content Security Policy headers can provide an additional layer of protection against XSS attacks by restricting the sources from which scripts can be loaded. The application should also be configured to avoid displaying raw user input in error pages, instead using generic error messages that do not reflect user-provided data. Regular security updates and patches should be applied immediately upon availability, as this vulnerability has been known since 2006 and represents a classic example of how inadequate input validation can create persistent security risks in web applications.