Re: Internet Explorer and Opera local zone restriction bypass

[Jort Slobbe <jortslobbe () hetnet nl>]

Mindwarper * wrote:

> Internet Explorer and Opera local zone restriction bypass.
> =--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=
>
> ----------------------
> Vendor Information:
> ---------------------- 
>
> Homepage : http://www.microsoft.com
> Vendor : informed
> Mailed advisory: 23/10/03
> Vender Response : None yet
>
>
> ----------------------
> Affected Versions:
> ----------------------
>
> All version of IE 6
> Possibly 5.x too
>
>
> ----------------------
> Description:
> ----------------------
>
> Microsoft Internet Explorer does not allow local file access by a remote host by default.
> By creating an iframe which points on a specially crafted cgi script (using the location header 
> to confuse IE), it is possible to cause IE to execute any local file through the iframe with local 
> zone restrictions. This then allows remote arbitrary file execution on the victim without having
> the victim do a thing except load the page.
> Opera seems to not only be affected by this vulnerability, but it also allows direct
> local file access through iframes without any cgi scripts. Unlike IE where it is possible
> to set activex objects to execute arbitrary files, in Opera it is not. There may be a way,
> but I am currently not aware of any.
>
>
> ----------------------
> Exploit:
> ----------------------
>
> I have created a proof of concept page, but I did not show or explain how the cgi scripts
> nor the flash file work exactly to prevent kiddie abuse.
>
> For IE: http://www.mlsecurity.com/ie/ie.htm
>
> For Opera: <iframe name="abc" src="file:///C:/"></iframe>
>
> ----------------------
> Solution:
> ---------------------- 
>
> Check Microsoft's website frequently until a new patch comes out.
>
> ----------------------
> Contact:
> ----------------------
>
> - Mindwarper
> - mindwarper () linuxmail org
> - http://mlsecurity.com
>
>  
It doesn't work here. I have win2k sp4 with IE6 sp1. I didn't see the 
weird stuff in  the iframe. I have clicked 10 times refresh and the 
Iframe is as blank as possible ;). When i clicked on the go go go button 
nothing were created. Maybe i'm not vurnable?

Regards
Jort