Vendor Homepage : http://www.bing.com
Vulnerability Type : XSS Reflected

Description
------------------
BING.COM is prone to a XSS vulnerability because the application fails
to properly perform adequate boundary checks on user-supplied data.
An attacker can exploit this issue to execute arbitrary code in the
victim's browser.

Details
-------------------
The reflected XSS vulnerability is a variant of a cross-site scripting
flaw: it occurs when the data provided by the attacker is exectued by
the browser, and then displayed on "normal" pages returned to other
users in the course of regular browsing, without proper HTML escaping. A
classic example of this is with online message boards where users are
allowed to post HTML formatted messages for other users to read

Exploit example as follow
-----------------------------

http://www.bing.com/maps/embed/Customize.aspx
?v=2
&cp=-34.59999847400003~-58.45000076200001
&lvl=6
&dir=0
&sty=c
&eo=
&where1=';alert(String.fromCharCode(88,83,83,32,98,121,32,114,117,110,108,118,108))//
&form=LMLTEW

The vulnerability is caused by the following code and affected by the
Generate Code map


by
runlvl