CVE-2012-4266 in Proman Xpress
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in client_details.php in Proman Xpress 5.0.1 allows remote attackers to inject arbitrary web script or HTML via the cl_comments parameter. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 04/02/2025
The vulnerability identified as CVE-2012-4266 represents a critical cross-site scripting flaw in the Proman Xpress 5.0.1 web application, specifically within the client_details.php script. This vulnerability falls under the Common Weakness Enumeration category CWE-79, which defines improper neutralization of input during web output rendering as a fundamental weakness in web application security. The flaw manifests when the application fails to properly sanitize user-supplied input before incorporating it into dynamic web page content, creating an avenue for malicious actors to execute arbitrary scripts within the context of other users' browsers.
The technical exploitation of this vulnerability occurs through the cl_comments parameter, which serves as an entry point for attackers to inject malicious payloads into the application's user interface. When a user views the client details page, the unsanitized comment data gets rendered directly into the HTML output without proper encoding or validation measures. This allows attackers to craft malicious input containing script tags or other HTML elements that execute in the victim's browser context. The vulnerability's remote nature means that attackers can exploit it without requiring physical access to the system or direct interaction with the application's server-side components.
The operational impact of this XSS vulnerability extends beyond simple data theft or defacement. Attackers can leverage this weakness to hijack user sessions, steal sensitive information, modify data within the application, or redirect users to malicious websites. The vulnerability affects all users who can view client details, potentially compromising the confidentiality and integrity of business data. Given that this is a client management system, the implications are particularly severe as it may expose sensitive client information, business communications, and proprietary data that could be exploited for financial gain or competitive advantage.
Security professionals should note that this vulnerability aligns with ATT&CK technique T1531 which involves use of remote services to conduct attacks. The remediation approach must focus on implementing proper input validation and output encoding mechanisms. Organizations should implement comprehensive sanitization of all user inputs, particularly those that are rendered in web pages, and adopt Content Security Policy (CSP) headers to mitigate the impact of any potential exploitation attempts. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components, as the absence of proper input validation represents a systemic security weakness that can affect multiple application modules. The vulnerability demonstrates the critical importance of following secure coding practices and implementing defense-in-depth strategies to protect web applications from common but dangerous attack vectors.