CVE-2024-26472: Reflected XSS Vulnerability in KLiK SocialMediaWebsite 1..1 - Exploit Details, Code Snippets, and Original References

In this post, we explore a discovered Cross-Site Scripting (XSS) vulnerability (CVE-2024-26472) in KLiK SocialMediaWebsite version 1..1 by msaad1999, a popular Content Management System (CMS) platform. We will discuss the details of the vulnerability, as well as how attackers can exploit it to execute arbitrary JavaScript in the user's browser. Finally, we'll provide links to original references and code snippets demonstrating the vulnerability.

CVE-2024-26472: Overview

This vulnerability in KLiK SocialMediaWebsite 1..1 by msaad1999 affects the 'create-new-pwd.php' file. Remote attackers can exploit the 'selector' and 'validator' parameters to inject malicious JavaScript payloads and execute them in the unsuspecting user's browser. As a result, sensitive information may be leaked, and an attacker can potentially take control of the affected user's web session.

Exploit Details

This Reflected XSS vulnerability results from a lack of proper input validation and output encoding in the 'selector' and 'validator' parameters of the create-new-pwd.php file. Attackers can craft URLs containing a malicious JavaScript payload in either of these parameters, which the application then reflects back and executes in the user's browser.

Here's a code snippet demonstrating the vulnerability

<?php
  require "globalHeader.php";
?>
<main>
  <div class="container">
    <h1>Create a New Password</h1>
    <?php
      $selector = $_GET['selector'];
      $validator = $_GET['validator'];

      if (empty($selector) || empty($validator)) {
          echo "Could not validate your request.";
          exit();
      } else {
          // rest of the code
      }
    ?>
  </div>
</main>
<?php
  require "footer.php";
?>

In this example, the $selector and $validator variables are taken directly from the GET request without being sanitized or validated. Consequently, injecting a JavaScript payload is possible through a crafted, malicious URL. For example:

https://example.com/create-new-pwd.php?selector=<script>alert('XSS')</script>&validator=<script>alert('XSS')</script>;

Upon accessing the malicious URL, the unsuspecting user would find their browser executing the arbitrary JavaScript, displaying an alert box with the text 'XSS'.

Mitigation

To safeguard against this vulnerability, developers behind KLiK SocialMediaWebsite should implement the following measures:

1. Input Validation: Sanitize user inputs by filtering out potentially harmful characters, such as <, >, and " from the 'selector' and 'validator' parameters.
2. Output Encoding: Encode variables, such as $selector and $validator, when they are reflected back in the HTML content. Using functions like htmlspecialchars() in PHP can help achieve this.

Original References

1. CVE-2024-26472 - National Vulnerability Database (NVD)
2. KLiK SocialMediaWebsite by msaad1999

Conclusion

In summary, the Reflected XSS vulnerability (CVE-2024-26472) in KLiK SocialMediaWebsite 1..1 by msaad1999 allows remote attackers to execute arbitrary JavaScript in a user's web browser. To protect users, developers should implement proper input validation and output encoding measures to mitigate this risk.

For further information, consult the links provided in the 'Original References' section above.

Timeline

Published on: 02/29/2024 01:44:19 UTC
Last modified on: 03/08/2024 21:15:07 UTC