CVE-2022-42992 - Multiple Stored Cross-Site Scripting (XSS) Vulnerabilities in Train Scheduler App v1. Allow Attackers to Execute Arbitrary Web Scripts or HTML

Today, we're going to dive into an important security vulnerability recently discovered in the web application: Train Scheduler App v1.. For those not aware, this application is widely used to streamline train scheduling and manage train routes. Unfortunately, it has been found to contain multiple stored cross-site scripting (XSS) vulnerabilities that could put the application's users and their data at risk.

CVE-2022-42992 is the identifier for this vulnerability, and we'll be discussing the details of how this exploit works, along with code snippets and links to the original references.

Overview

The Train Scheduler App v1. was found to have multiple stored XSS vulnerabilities in the following text fields:

Destination

These vulnerabilities can be exploited by attackers to inject arbitrary web scripts or HTML into these text fields, which will then be executed when other users access the pages displaying this data.

Here's a simple code snippet that demonstrates how an attacker can exploit the vulnerability

<!-- Inject this payload into the Train Code, Train Name, or Destination text field -->
<script>alert('XSS Attack')</script>

By injecting the payload above into any of the vulnerable text fields, an attacker can trigger a JavaScript alert showing "XSS Attack" each time a user views the page where the affected train information is displayed.

This is just a basic example—more sophisticated attacks could be used to steal user data, execute malicious scripts, or perform other harmful actions.

Exploit Details

Once an attacker injects a malicious payload into the vulnerable text fields, it becomes stored in the application's database. When other users subsequently access pages containing the affected data, the malicious script is executed in their browsers, potentially leading to data theft, session hijacking, or other adverse consequences.

The root cause of this vulnerability lies in the improper handling of user input by the application. It does not sanitize, validate, or encode user input before storing it, leading to these XSS vulnerabilities.

Mitigation

To protect against these stored XSS vulnerabilities, the developers of Train Scheduler App v1. need to implement input validation and output encoding. For example, they could use a well-known library like OWASP's XSS Prevention Cheat Sheet to properly sanitize and validate user input.

In addition to implementing secure coding practices, users should ensure that they maintain up-to-date antivirus software and browser extensions. Regularly updating the Train Scheduler App will also ensure that any security patches are applied as they become available.

For more information on CVE-2022-42992, you can check out the following references

1. CVE-2022-42992 on National Vulnerability Database (NVD)
2. OWASP XSS Prevention Cheat Sheet

Conclusion

In summary, CVE-2022-42992 highlights the importance of secure coding practices and robust input validation in web applications. By implementing appropriate mitigations and staying informed about new vulnerabilities, developers and users can work together to create more secure software and protect their data from attack.

Timeline

Published on: 10/27/2022 12:15:00 UTC
Last modified on: 10/28/2022 19:45:00 UTC