CVE-2009-3905 in e-Courier
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in e-Courier CMS allow remote attackers to inject arbitrary web script or HTML via the UserGUID parameter to (1) Wizard_tracking.asp, (2) wizard_oe2.asp, (3) your-register.asp, (4) main-whyregister.asp, and (5) your.asp in home/, and other unspecified vectors. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 04/27/2025
The CVE-2009-3905 vulnerability represents a critical cross-site scripting flaw affecting the e-Courier Content Management System, which operates within the broader context of web application security and user input validation. This vulnerability specifically targets the UserGUID parameter across multiple ASP pages within the application's home directory, creating a persistent attack surface that could be exploited by remote threat actors. The affected files include Wizard_tracking.asp, wizard_oe2.asp, your-register.asp, main-whyregister.asp, and your.asp, indicating a systemic issue in how the application processes user-provided GUID values. The vulnerability stems from inadequate input sanitization and output encoding mechanisms that fail to properly validate or escape user-supplied data before incorporating it into dynamic web content, thereby allowing malicious scripts to be executed within the context of authenticated users' browsers.
The technical exploitation of this vulnerability follows established patterns of XSS attacks where attackers craft malicious payloads containing script code that gets stored or reflected in the application's response. When legitimate users navigate to affected pages with compromised UserGUID parameters, their browsers execute the injected malicious code, potentially leading to session hijacking, credential theft, or redirection to malicious sites. This particular vulnerability aligns with CWE-79, which specifically addresses Cross-Site Scripting flaws in web applications, and demonstrates how improper input validation creates persistent security weaknesses. The attack vector operates through the exploitation of web application logic that fails to properly sanitize user input before rendering it in HTML output contexts, making it particularly dangerous as it can affect multiple application endpoints simultaneously.
The operational impact of CVE-2009-3905 extends beyond simple script injection, as it represents a fundamental security failure in the application's data handling processes that could compromise user sessions and potentially lead to full system compromise. Attackers could leverage this vulnerability to steal session cookies, modify user permissions, or redirect users to phishing sites that appear legitimate within the application's domain. The presence of this vulnerability in multiple files suggests a widespread codebase issue rather than isolated incidents, indicating that the development team may have overlooked consistent input validation patterns across the application. This flaw particularly impacts the security posture of organizations relying on e-Courier CMS for business operations, as it creates opportunities for persistent threats that could go undetected for extended periods.
Organizations affected by this vulnerability should implement immediate mitigations including comprehensive input validation, output encoding, and the implementation of Content Security Policy headers to prevent script execution. The recommended approach involves sanitizing all user-provided input through proper validation routines and ensuring that any data rendered in web pages undergoes appropriate HTML encoding before display. Security controls should include the deployment of web application firewalls and regular security assessments to identify similar vulnerabilities across the application stack. According to ATT&CK framework category T1190, this vulnerability represents a technique for exploiting web application flaws to gain unauthorized access, while the broader implications align with T1566 which covers social engineering through malicious web content. The remediation process must address the root cause by implementing secure coding practices that prevent similar issues from occurring in other application components, emphasizing the need for comprehensive security training and code review processes to maintain application integrity over time.