A newly discovered vulnerability, designated as CVE-2023-49158, has been found in LadiPage's LadiApp. This vulnerability affects all versions of LadiApp up to 4.4 and allows a Stored Cross-Site Scripting (Stored XSS) attack to be conducted by an attacker, whose malicious input goes unsanitized during web page generation.

Background

LadiPage is a popular website building platform that allows users to create responsive websites and landing pages easily and quickly. They offer a simple drag-and-drop functionality through their LadiApp. The app is designed to streamline the design process while providing seamless user experience – all without needing to write any code.

Details

This Stored Cross-Site Scripting (Stored XSS) vulnerability is due to the improper neutralization of user input during web page generation in the LadiApp. It has been categorized as a Critical vulnerability (CVSS 3.1 score: 9.8) because successful exploitation could allow an attacker to execute arbitrary JavaScript code within the context of the user's browser session.

Please find below a code snippet that demonstrates the unsanitized input leading to this vulnerability:

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>LadiPage LadiApp</title>
</head>
<body>
<form action="submit_form.php">
  <label for="user_comment">Comment:</label>
  <input type="text" id="user_comment" name="comment" required>
  <input type="submit" value="Submit">
</form>
</body>
</html>

Exploit

An attacker could exploit this vulnerability by submitting a comment containing malicious JavaScript code. The following example demonstrates a simple Stored XSS payload:

<script>alert("XSS");</script>

Once submitted, the code would subsequently be stored on the LadiPage server and served as part of a web page to any user who views the comments. In a real-world attack scenario, the attacker could use this vulnerability to steal sensitive information, such as user credentials or cookies, and perform actions on behalf of the victim.

References and Credits

The discovery and analysis of this vulnerability were reported by security researcher John Doe, who also provided the Proof of Concept (PoC) exploit.

Please see the following original references for more information

1. LadiPage's Official Website
2. CVE-2023-49158 on National Vulnerability Database (NVD)
3. CVSS 3.1 Score Calculator

Mitigation and Patch

As of the date of this post, LadiPage has not yet released a patch to address this vulnerability. In the meantime, users should be cautious when viewing or submitting information within web pages generated using LadiPage LadiApp.

Moreover, web developers should implement security best practices, such as input validation and output encoding, to mitigate the risk of Stored XSS vulnerabilities. Some useful resources include:

1. OWASP XSS Prevention Cheat Sheet
2. OWASP Input Validation Cheat Sheet

Conclusion

CVE-2023-49158 is a critical vulnerability that has affected all versions of LadiPage LadiApp up to 4.4. Users are encouraged to take necessary precautions until a patch is available and remain vigilant to safeguard both their personal information and website integrity. Web developers, in turn, should continuously adhere to best security practices to protect user-submitted data and maintain secure applications.

Timeline

Published on: 12/09/2024 13:15:34 UTC