Security Basics mailing list archives

RE: [WEB SECURITY] Re: Minimal User Interaction with Links


From: "Schmidt, Chris" <cschmidt () servicemagic com>
Date: Mon, 17 Aug 2009 07:54:22 -0600

FWIW

Chrome also says it is an invalid cert... 

-----Original Message-----
From: 51l3n73y3s [mailto:51l3n7 () live in] 
Sent: Friday, August 14, 2009 5:36 PM
To: Steven M. Christey; micheal.espinola () gmail com
Cc: security-basics () securityfocus com; websecurity () webappsec org
Subject: Re: [WEB SECURITY] Re: Minimal User Interaction with Links

Steve,

I agree completely with you.

This link 
http://www.google.co.in/#hl=en&q=limited+users+test&btnG=Google+Search&m
eta=&aq=f&fp=2cf627ce33d082a9 
will not give a certificate problem with IE, but with Mozilla Firefox
3.5.2 
it throws an invalid certificate for the first website in the results
page. 
Someone trying to fake a military website, Probably? That is off thread,
if 
someone wants to report that. It shouldn't throw the certificate warning
at 
all. All I did was to search in Google for "limited users test" (without

quotes) and coincidentally  it came up as the first result. Perhaps it's

still the first. A bug's been filed at 
https://bugzilla.mozilla.org/show_bug.cgi?id=510448 cause I think this
is 
not normal. It doesn't happen with 3.0, It doesn't happen with IE
6.0.2900 
that I have. The browser is not handling this properly. It should keep
that 
to itself(Block it) even if it's checking each link for validity, though
I 
don't see a reason why it should even do that.

-Sandeep Cheema


--------------------------------------------------
From: "Steven M. Christey" <coley () linus mitre org>
Sent: Saturday, August 15, 2009 2:41 AM
To: <micheal.espinola () gmail com>
Cc: "51l3n73y3s" <51l3n7 () live in>; <security-basics () securityfocus com>; 
<websecurity () webappsec org>
Subject: Re: [WEB SECURITY] Re: Minimal User Interaction with Links


On Fri, 14 Aug 2009, Micheal Espinola Jr wrote:

Under normal circumstances, no, it is not possible in this day and
age
(i.e with an up-to-date OS) to automatically execute/save a file by
clicking a link.

It's possible to do this automatically, without any user interaction,
by
referencing vulnerable ActiveX controls with insecure exposed methods
with
names like DownloadAndExecuteFile() (see CVE-2008-4586 for example).

These types of issues are starting to show up fairly regularly in CVE.
Very few researchers seem to be paying attention to Firefox plug-ins,
but
once they do, I expect to see similar results there, too.

Theoretically it's within the browsers' security models to avoid the
automatic save/execute of files, but browser bugs and the
aforementioned
plugin vulnerabilities mean that practically speaking, it's still
possible.  I assume the more knowledgeable Flash experts among us have
their own suggestions.

- Steve


------------------------------------------------------------------------
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------------------------------------------------------------------------



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------------------------------------------------------------------------
Securing Apache Web Server with thawte Digital Certificate
In this guide we examine the importance of Apache-SSL and who needs an SSL certificate.  We look at how SSL works, how 
it benefits your company and how your customers can tell if a site is secure. You will find out how to test, purchase, 
install and use a thawte Digital Certificate on your Apache web server. Throughout, best practices for set-up are 
highlighted to help you ensure efficient ongoing management of your encryption keys and digital certificates.

http://www.dinclinx.com/Redirect.aspx?36;4175;25;1371;0;5;946;e13b6be442f727d1
------------------------------------------------------------------------


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