---
id: 8176
title: "Defeating CSRF Protections Through Expired cross-domain.xml Domains"
source_domain: netspi.com
source_url: "https://www.netspi.com/blog/technical-blog/web-application-pentesting/defeating-csrf-protections-expired-cross-domain-xml-domains/"
published_at: "2017-02-21T00:00:00Z"
tags: ["csrf", "flash", "web-pentesting", "cross-origin", "crossdomain-xml", "domain-expiry"]
phying_url: "https://phying.com/item/8176"
lang: en
---

# Defeating CSRF Protections Through Expired cross-domain.xml Domains

## Summary

Shows how registering an expired domain listed in a site's crossdomain.xml grants full Flash cross-domain access and defeats CSRF protections, with a Python scanner to discover such policies.

## Intelligence Metadata

- **Sources:** netspi.com
- **Published:** 2017-02-21T00:00:00Z
- **Original:** https://www.netspi.com/blog/technical-blog/web-application-pentesting/defeating-csrf-protections-expired-cross-domain-xml-domains/
- **Phying News:** https://phying.com/item/8176