CVE-2024-46655 in Ellevo
Summary
by MITRE • 09/25/2024
A reflected cross-site scripting (XSS) vulnerability in Ellevo 6.2.0.38160 allows attackers to execute arbitrary code in the context of a user's browser via a crafted payload or URL.
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Analysis
by VulDB Data Team • 03/09/2025
The vulnerability identified as CVE-2024-46655 represents a critical reflected cross-site scripting flaw within Ellevo version 6.2.0.38160, a widely deployed enterprise software solution. This security weakness stems from inadequate input validation and output encoding mechanisms within the application's web interface, creating a pathway for malicious actors to inject malicious scripts into user browsers. The vulnerability specifically manifests when the application fails to properly sanitize user-supplied input parameters that are subsequently reflected back to the user in HTTP responses without appropriate HTML escaping or encoding measures.
The technical exploitation of this vulnerability follows the standard reflected XSS attack pattern where an attacker crafts a malicious URL containing encoded script payloads that, when clicked by a victim, executes within the victim's browser context. The flaw occurs at the application layer where user input is directly incorporated into dynamic web content without proper sanitization or encoding. This allows attackers to execute arbitrary JavaScript code within the victim's browser session, potentially enabling session hijacking, credential theft, or redirection to malicious websites. The vulnerability is classified under CWE-79 as "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", which specifically addresses the failure to properly encode or escape user-controllable data before incorporating it into web page content.
The operational impact of this vulnerability extends beyond simple script execution, as it can facilitate more sophisticated attacks within the targeted environment. An attacker could leverage this vulnerability to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to phishing sites designed to capture credentials. The reflected nature of the vulnerability means that the malicious payload must be delivered to the victim through external means such as email, instant messaging, or social engineering campaigns, as the attack requires the victim to click on a specially crafted URL. This makes the vulnerability particularly dangerous in enterprise environments where users frequently interact with web applications and may be targeted through spear-phishing campaigns. The attack vector aligns with ATT&CK technique T1566.001 for "Phishing: Spearphishing Attachment" and T1566.002 for "Phishing: Spearphishing Link", demonstrating how this vulnerability can be weaponized in real-world social engineering attacks.
Mitigation strategies for CVE-2024-46655 should prioritize immediate patching of the Ellevo application to the latest available version that addresses the reflected XSS vulnerability. Organizations should implement comprehensive input validation and output encoding mechanisms across all web applications to prevent similar issues from occurring. The implementation of Content Security Policy (CSP) headers can provide an additional layer of defense by restricting the sources from which scripts can be executed within the browser. Regular security testing including dynamic application security testing (DAST) and manual penetration testing should be conducted to identify and remediate similar vulnerabilities. Network segmentation and user education regarding suspicious links and email attachments can help reduce the attack surface and prevent successful exploitation attempts. Organizations should also consider implementing web application firewalls (WAF) with XSS detection capabilities as a temporary mitigation measure while awaiting official patches from the vendor. The vulnerability underscores the importance of maintaining up-to-date software versions and implementing robust security controls throughout the application development lifecycle to prevent such critical security flaws from being introduced into production systems.