A recently discovered DOM-based Reflected Cross-Site Scripting (XSS) vulnerability in Elementor's Elementor Website Builder plugin affects versions up to and including 3.5.5. This vulnerability, identified as CVE-2022-29455, allows attackers to inject malicious scripts into web pages viewed by other users, potentially leading to data theft, compromised accounts, or other harmful consequences.
In this example, we will use an arbitrary alert message as the payload to showcase the impact of this vulnerability:
Here's a code snippet demonstrating the inclusion of the payload in a button element
<!-- Elementor button widget -->
<span class="elementor-button-text">Click me</span>
The impact of this vulnerability depends on the payload used by the attacker. In our example, the alert message is mostly harmless. However, more malicious payloads could be employed for various purposes. Attackers could access sensitive data, steal authentication cookies, deface the website, redirect users to phishing websites, or even exploit other vulnerabilities in the browser or on the website.
It is recommended that users of the Elementor Website Builder plugin update to the latest version, which addresses this vulnerability. Proper input validation and output encoding should also be implemented to prevent this type of attack from occurring again.
Developers can refer to the OWASP XSS Prevention Cheat Sheet for guidelines on how to securely handle user-supplied data and protect applications from XSS attacks.
The Elementor Website Builder plugin's DOM-based Reflected XSS vulnerability (CVE-2022-29455) in versions up to 3.5.5 poses a significant risk to both end users and website administrators. Updating the plugin to the latest version and following secure coding practices can help mitigate the potential harm inflicted by attackers exploiting this vulnerability.
Published on: 06/13/2022 17:15:00 UTC
Last modified on: 06/27/2022 16:18:00 UTC