Re: [Full-disclosure] Opera Stored Cross Site Scripting

[Roberto Suggi <roberto.suggi@xxxxxxxxxxxxxxxxxxxxxxx>]

Hi Avivra,

I have tested your PoC with Opera 9.52 and Opera 9.60 and I needed to tweak 
your scripts and it works. Good job!

I mostly focused on stealing history and initially I could not find a way to 
interact with opera:config. But apparently, appending the IFRAME to the 
document DOM with document.body.appendChild is the way.

Cheers,

Roberto

From: avivra [mailto:avivra@xxxxxxxxx]
Sent: Thursday, 23 October 2008 12:52 p.m.
To: 'Stefano Di Paola'; Roberto Suggi; full-disclosure@xxxxxxxxxxxxxxxxx
Subject: Re: [Full-disclosure] Opera Stored Cross Site Scripting

Hi,

Just found a way to use Stefano's opera:config idea to execute code from remote.
Instead of changing the HTTP Proxy, an attacker can change the default external 
mail application to "\\evil\malware.exe ", or to local commands (e.g. ftp.exe 
which can be used to download malicious binaries from remote). Also, there is a 
need to change the "Mail Handler" settings to "2", so opera will execute the 
external mail application, instead of the default opera mail application.
After changing the settings, the attacker can simply set the location to 
"mailto:"; to execute the code.

A proof-of-concept which executes the Windows Calculator can be found here: 
http://raffon.net/research/opera/history/op.html

Cheers,
--Aviv.
http://aviv.raffon.net


Internal Virus Database is out of date.
Checked by AVG - http://www.avg.com
Version: 8.0.173 / Virus Database: 270.7.6/1711 - Release Date: 6/10/2008 5:37 
p.m.

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