Get the Whitepaper called Using XSS to Bypass XSRF Protection.
You can download it from the following link: https://packetstormsecurity.com/files/download/82676/Using_XSS_to_bypass_CSRF_protection.pdf
Source: https://packetstormsecurity.com/files/82676/Using-XSS-To-Bypass-XSRF-Protection.html