CVE-2024-51628 in Online Booking System Widget Plugin
Summary
by MITRE • 11/09/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in EzyOnlineBookings EzyOnlineBookings Online Booking System Widget allows DOM-Based XSS.This issue affects EzyOnlineBookings Online Booking System Widget: from n/a through 1.3.
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Analysis
by VulDB Data Team • 02/28/2025
The vulnerability identified as CVE-2024-51628 represents a critical security flaw in the EzyOnlineBookings Online Booking System Widget that falls under the category of improper input neutralization during web page generation. This weakness manifests as a DOM-based cross-site scripting vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability specifically impacts versions of the widget ranging from the initial release through version 1.3, indicating a long-standing issue that has not been adequately addressed. The affected system operates by generating web pages dynamically, and the flaw occurs during this generation process when input parameters are not properly sanitized or escaped before being incorporated into the DOM structure.
The technical nature of this vulnerability stems from the widget's failure to adequately validate and sanitize user input that gets processed and rendered within the browser's Document Object Model. When a user interacts with the booking system, input parameters such as URL parameters, form fields, or other dynamic content are directly manipulated and inserted into the page without proper security measures. This creates an environment where malicious actors can craft specifically designed payloads that exploit the lack of input validation. The DOM-based nature of the vulnerability means that the attack vector operates entirely within the browser environment without requiring server-side processing, making it particularly dangerous as it can bypass traditional server-side security controls. This flaw directly corresponds to CWE-79, which specifically addresses Cross-site Scripting vulnerabilities in web applications.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it can enable sophisticated attack chains that compromise user sessions and potentially lead to full system compromise. An attacker who successfully exploits this vulnerability can execute arbitrary JavaScript code within the context of a victim's browser session, potentially stealing session cookies, modifying page content, redirecting users to malicious sites, or performing actions on behalf of the authenticated user. The affected environment typically involves users accessing the booking system through web browsers, making any organization relying on this widget vulnerable to persistent attacks. The vulnerability's presence in versions through 1.3 suggests that organizations may have been exposed to this risk for an extended period, potentially allowing attackers to establish persistent footholds within their systems. This weakness aligns with ATT&CK technique T1059.007 for Scripting and T1531 for Account Access Through Web Shell, as it provides the initial vector for executing malicious code and potentially establishing persistent access.
Mitigation strategies for CVE-2024-51628 should focus on immediate input validation and sanitization measures that prevent malicious code from being executed within the browser environment. Organizations should implement strict Content Security Policy headers that limit script execution and prevent unauthorized code injection. The most effective remediation involves ensuring that all user-provided input is properly escaped and validated before being incorporated into the DOM structure, with particular attention to URL parameters and dynamic content rendering. Additionally, implementing proper encoding mechanisms such as HTML entity encoding for output and using secure coding practices that prevent direct injection of user data into script contexts. The solution should also include regular security assessments and monitoring for similar vulnerabilities within the application ecosystem. Organizations should also consider implementing Web Application Firewalls that can detect and block suspicious input patterns, as well as establishing proper patch management procedures to ensure timely updates and security fixes are deployed across all affected systems. The remediation process should include thorough code reviews to identify all potential injection points and ensure that the fix is comprehensive across all functions that handle user input and generate dynamic content.