full-disclosure - Re: Binary Planting Goes "Any File Type"

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Message-Id: <6607B0AB-EEF3-4229-B185-CCB85DEC694D@acrossecurity.com>
Date: Sat, 9 Jul 2011 01:11:33 +0200
From: Mitja Kolsek <mitja.kolsek@...ossecurity.com>
To: Dan Kaminsky <dan@...para.com>
Cc: "si-cert@...es.si" <si-cert@...es.si>,
	"full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>,
	"security@...ossecurity.com" <security@...ossecurity.com>,
	"bugtraq@...urityfocus.com" <bugtraq@...urityfocus.com>,
	"cert@...t.org" <cert@...t.org>
Subject: Re: Binary Planting Goes "Any File Type"

Ok, Dan, just for you:

Launch Internet Explorer 9 on Windows 7 (probably other IE/Win works too), go to File->Open (or press Ctrl+O), browse to Test.html and open it. No double-clicking and you couldn't launch an executable this way. Better?

Cheers,
Mitja

On Jul 8, 2011, at 9:10 PM, Dan Kaminsky <dan@...para.com> wrote:

> And here's where your exploit stops being one:
> 
> ===
> Suppose the current version of Apple Safari (5.0.5) is our default web
> browser. If we put the above files in the same directory (on a local
> drive or a remote share) and double-click Test.html, what happens is
> the following:
> ===
> 
> At this point, Test.html might actually be test.exe with the HTML icon
> embedded.  Everything else then is unnecessary obfuscation -- code
> execution was already possible the start by design.
> 
> This is a neat vector though, and it's likely that with a bit more
> work it could be turned into an actual RCE.
> 
> On Fri, Jul 8, 2011 at 10:38 AM, ACROS Security Lists <lists@...os.si> wrote:
>> 
>> We published a blog post on a nice twist to binary planting which we call "File
>> Planting." There'll be much more of this from us in the future, but here's the first
>> sample for you to (hopefully) enjoy.
>> 
>> http://blog.acrossecurity.com/2011/07/binary-planting-goes-any-file-type.html
>> 
>> or
>> 
>> http://bit.ly/nXmRFD
>> 
>> 
>> Best regards,
>> 
>> Mitja Kolsek
>> CEO&CTO
>> 
>> ACROS, d.o.o.
>> Makedonska ulica 113
>> SI - 2000 Maribor, Slovenia
>> tel: +386 2 3000 280
>> fax: +386 2 3000 282
>> web: http://www.acrossecurity.com
>> blg: http://blog.acrossecurity.com
>> 
>> ACROS Security: Finding Your Digital Vulnerabilities Before Others Do
>> 
>> 
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