lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-ID: <21828533.299631158181372061.JavaMail.juha-matti.laurio@netti.fi>
Date: Thu, 14 Sep 2006 00:02:51 +0300 (EEST)
From: Juha-Matti Laurio <juha-matti.laurio@...ti.fi>
To: David Kierznowski <david.kierznowski@...il.com>
Cc: full-disclosure@...ts.grok.org.uk, security-basics@...urityfocus.com,
	"pdp \(architect\)" <pdp.gnucitizen@...glemail.com>
Subject: Re: Backdooring PDF Files

Yes, the first example opens MSIE without any user interaction when visiting your PoC link with Firefox 1.5.0.6.
This issue is more serious due to recent unpatched issues and public exploits in IE.

- Juha-Matti


David Kierznowski <david.kierznowski@...il.com> wrote: 
> 
> I installed 7.0.8 (latest version) for testing.
> 
> If the document is loaded from the browser you receive no warning.
> v7.0.8 seems to warn the user if the document is loaded from the
> desktop.
> 
> I think this has to do with different Adobe contexts.
> 
> --
> David Kierznowski
> 
> On 13/09/06, pdp (architect) <pdp.gnucitizen@...glemail.com> wrote:
> > I have tested both of the examples and no warning boxes are showing.
> > It seams that everybody is getting different results. Interesting!
> >
> > On 9/13/06, Juha-Matti Laurio <juha-matti.laurio@...ti.fi> wrote:
> > > Proof of Concept for example 1 (backdoored1.pdf) opened with Adobe Reader 7.0.8
> > > (i.e. no browser plug-in used) issued a Security Warning dialog box:
> > >
> > > "The document is trying to conenct to the site:
> > > http://www.google.com/owned.html
> > >
> > > If you trust the site click "Allow", otherwise click "Block"."
> > >
> > > Option Remember my action is in use as well.
> > >
> > > When clicking "Allow" this Google page was opened in MSIE (in fact FF is my default browser, however).
> > >
> > > Am I missing something related to differences between Reader plug-in and Reader application?
> > >
> > > - Juha-Matti
> > >
> > >
> > > David Kierznowski <david.kierznowski@...il.com> wrote:
> > > >
> > > > Recently, there has been alot of hype involving backdooring various
> > > > web technologies. pdp (arcitect) has done alot of work centered around
> > > > this area.
> > > >
> > > > I saw Jeremiah Grossman mention PDF's being "BAD", however, I was
> > > > unable to easily locate any practical reasons as to why. I decided to
> > > > investigate this a little further.
> > > >
> > > > This article discusses two possible backdoor techniques for Adobe
> > > > Acrabat Reader and Professional. It includes proof of concept code and
> > > > backdoored PDF documents.
> > > >
> > > > The article can be found here:
> > > > http://michaeldaw.org/
> > > >
> >
> >
> > --
> > pdp (architect)
> > http://www.gnucitizen.org

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

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ