Google Translate Open Redirection

`Summary  
The issue being described below affects google translate and is not  
exactly an open redirect. However the results can be the same under  
certain conditions.  
The following issue can be used as an open redirect when:  
  
Potential victim must not block javascripts from being executed in  
his/her browser.  
Potential victim’s browser must not warn him/her about redirections.  
Potential victim’s browser must allow breaking out of iframes.  
  
E.x visit the following link with firefox:  
http://translate.google.com/translate?u=http://www.solvix.gr/accomplished.html  
  
Details  
When you want to translate a webpage you can visit  
http://translate.google.com/translate?u=yoursite where “yoursite” is the  
webpage you want to translate. Of course you can add and other  
parameters like “sl=” and ”tl=” if you want to specify the source  
language and the language you want your site to be translated to. But  
lets keep it simple.  
If you try to create a redirect, the redirection will happen inside  
google’s frame. For example the following url:  
http://translate.google.com/translate?u=http://www.solvix.gr/notaccomplished.html  
notaccomplished.html has the following code:  
  
<script type=”text/javascript”>  
{  
window.location.assign(“http://www.solvix.gr/notaccomplished2.html”)  
}  
</script>  
  
will redirect you from http://www.solvix.gr/notaccomplished.html to  
http://www.solvix.gr/notaccomplished2.html  
But you are still inside google’s frame.  
But what will happen if you just try to get yourself out of google’s frame?  
Hmmm then you just get yourself out of google’s frame. That simple.  
Check the following url:  
http://translate.google.com/translate?u=http://www.solvix.gr/accomplished.html  
You will be redirected in my new blog, without any warning.  
accomplished.html has the following code  
<script language=’Javascript’>  
  
if (top.location!= self.location) {  
top.location = self.location.href  
}  
  
</script>  
  
<script>  
{  
window.location.assign(“http://www.solvix.gr”)  
}  
</script>  
  
Conclusion  
This issue is caused because google translate allows the execution of  
javascript from the remote site. However, this is not an XSS. Javascript  
is not executed on google’s domain.  
Some browsers do not allow you to break the iframe (at least not with my  
code above) while others warn you about the redirection. However some of  
the most common browsers like firefox and Internet Explorer 8 will be  
affected.  
  
————————————————————————————————————————————————  
  
Tested and working on:  
  
Firefox 24.0  
  
Firefox 23.0.1  
  
I.E 8.0.6001  
  
Opera 12.16 (Opera warns about the redirection but you can still escape  
from the frames. Check the following url:  
  
http://translate.google.com/translate?u=http://www.solvix.gr/or8.html )  
  
Not working:  
  
Konqueror Version 4.10.5 Using KDE Development Platform 4.10.5  
(https://bugs.kde.org/show_bug.cgi?id=57038)  
  
I.E 10  
  
Google Chrome 30.0.1599.69 m  
  
Google Chrome Version 31.0.1650.12 beta (browser warns about the  
redirection)  
  
————————————————————————————————————————————————  
  
++++++++++++++++++++++++++++++++++++++++++++++++++++++++  
`