CVE-2013-5693 in X2CRM
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in X2Engine X2CRM before 3.5 allows remote attackers to inject arbitrary web script or HTML via the model parameter to index.php/admin/editor.
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Analysis
by VulDB Data Team • 04/06/2025
The vulnerability identified as CVE-2013-5693 represents a critical cross-site scripting flaw within X2Engine X2CRM version 3.4 and earlier, specifically affecting the administrative editor component. This vulnerability resides in the index.php/admin/editor endpoint where the model parameter fails to properly sanitize user input, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code within the context of authenticated user sessions. The flaw fundamentally stems from inadequate input validation and output encoding practices that permit malicious payloads to bypass security controls designed to prevent unauthorized code execution.
From a technical perspective, the vulnerability manifests when an attacker crafts a malicious payload and submits it through the model parameter in the URL to the administrative editor interface. The application processes this parameter without sufficient sanitization, allowing the injected script to execute in the browser of any user who accesses the affected page. This type of vulnerability directly maps to CWE-79 - Improper Neutralization of Input During Web Page Generation, which is a well-documented weakness in web application security that occurs when applications fail to properly escape or validate user-supplied data before incorporating it into dynamically generated web content. The vulnerability's classification aligns with ATT&CK technique T1059.001 - Command and Scripting Interpreter: PowerShell, as it enables attackers to execute malicious code through web-based interfaces.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it can enable attackers to establish persistent access to the application and potentially escalate privileges within the organization's CRM environment. An attacker could leverage this vulnerability to steal session cookies, capture user credentials, redirect users to malicious sites, or even execute administrative commands that could compromise the entire system. The vulnerability is particularly concerning because it affects the administrative editor, which typically requires elevated privileges, making successful exploitation potentially catastrophic for organizations relying on X2CRM for customer relationship management. The attack vector is straightforward and requires minimal technical expertise, making it a high-value target for threat actors seeking to compromise business-critical applications.
Mitigation strategies for CVE-2013-5693 should prioritize immediate patching of the X2Engine X2CRM application to version 3.5 or later, where the vulnerability has been addressed through proper input validation and sanitization mechanisms. Organizations should implement comprehensive input validation that filters and escapes all user-supplied data, particularly in administrative interfaces where the risk of privilege escalation exists. Additional defensive measures include implementing Content Security Policy headers to limit script execution, deploying web application firewalls to detect and block malicious payloads, and conducting regular security assessments of web applications to identify similar input validation vulnerabilities. The remediation process should also include user education about recognizing potential XSS attack indicators and establishing monitoring procedures to detect unusual activity in administrative interfaces that could signal exploitation attempts.