CVE-2024-35752 in Stellissimo Text Box Plugin
Summary
by MITRE • 06/08/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Enea Overclokk Stellissimo Text Box allows Stored XSS.This issue affects Stellissimo Text Box: from n/a through 1.1.4.
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Analysis
by VulDB Data Team • 03/25/2025
This vulnerability represents a critical cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by other users. The weakness exists within the Enea Overclokk Stellissimo Text Box component, specifically in how it processes and renders user input during web page generation. The vulnerability is classified as stored XSS because malicious code persists in the application's database or storage system and executes whenever authorized users access the affected page. This type of vulnerability falls under CWE-79 which defines improper neutralization of input during web page generation, making it particularly dangerous as it can affect multiple users over time rather than just a single session.
The technical implementation flaw occurs when the application fails to properly sanitize or escape user-supplied data before incorporating it into dynamically generated web content. Attackers can exploit this by submitting malicious payloads through the text box interface, which are then stored and executed in the context of other users' browsers. This creates a persistent threat vector where malicious scripts can perform actions such as stealing session cookies, redirecting users to malicious sites, or defacing web pages. The vulnerability affects all versions of the Stellissimo Text Box component from the initial release through version 1.1.4, indicating this was likely a long-standing issue that was not properly addressed during development or security testing phases.
The operational impact of this vulnerability extends beyond simple data theft or defacement. When attackers successfully exploit stored XSS in web applications, they can establish persistent footholds within organizational networks, especially in environments where privileged users interact with the affected system. The attack chain typically begins with an attacker submitting malicious input through the text box interface, followed by the application storing this input without proper sanitization. When legitimate users view pages containing the stored malicious content, their browsers execute the injected scripts, potentially leading to complete session hijacking, data exfiltration, or further exploitation through techniques such as credential theft or privilege escalation. This vulnerability directly aligns with ATT&CK technique T1566.001 which covers the use of malicious content in web applications, and represents a significant risk to web application security and user trust.
Organizations should immediately implement multiple layers of mitigation to protect against this vulnerability. The primary defense involves implementing robust input validation and output encoding mechanisms that sanitize all user-supplied data before it is stored or rendered in web pages. This includes implementing Content Security Policy headers, using proper HTML escaping for dynamic content generation, and implementing strict input validation that rejects or sanitizes potentially malicious payloads. Security teams should also conduct comprehensive code reviews focusing on all input handling mechanisms within the affected application, particularly those involving text box or similar user input fields. Regular security assessments and penetration testing should be performed to identify similar vulnerabilities, while application developers should adopt secure coding practices that prevent XSS through proper input sanitization and output encoding. Additionally, network monitoring should be enhanced to detect suspicious patterns that may indicate exploitation attempts, and incident response procedures should be updated to address potential XSS-based attacks that could compromise user sessions or system integrity.