Re: Universal XSS with PDF files: highly dangerous

[Kristina Lein <kristina () jes ee>]

On Wednesday 03 January 2007 04:20, pdp (architect) wrote:
> I will be very quick and just point to links where you can read about
> this issue.
>
> It seams that PDF documents can execute JavaScript code for no
> apparent reason by using the following template:
>
>    
> http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_her
> e
>
> You must understand that the attacker doesn't need to have write
> access to the specified PDF document. In order to get an XSS vector
> working you need to have a PDF file hosted on the target and that's
> all about it. The rest is just a matter of your abilities and desires.

Even more, maybe it is possible to modify content of PDF with this method. 
Some way (I have not tried though) described here;

http://www.planetpdf.com/developer/article.asp?ContentID=6904

Need to write POC

Also I have to tell that my firefox crashed when I appended some random 
document.write('foobar') to exploit. I suppose it wrote it to PDF memory?! In 
this case we maybe can also execute code? Scary.

  Tõnu

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/