Summary

Netsparker detected an open policy Crossdomain.xml file.

Impact
Open policy Crossdomain.xml file allows other SWF files to make HTTP requests to your web server and see its response. This can be used for accessing one time tokens and CSRF nonces to bypass CSRF restrictions.
Remediation
Configure your Crossdomain.xml to prevent access from everywhere to your domain.
Classifications
WASC-15, OWASP 2013-A5 , CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C