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Re: [Full-disclosure] 4 Questions: Latest IE vulnerability, Firefox vs I

Subject: Re: [Full-disclosure] 4 Questions: Latest IE vulnerability, Firefox vs IE security, User vs Admin risk profile, and browsers coded in 100% Managed Verifiable code
Date: Sun, 26 Mar 2006 21:58:10 -0800 (PST)

of creating a
full-featured
browser, from scratch, with usability as good as IE
and Firefox
strikes me as a fairly tricky project. 

I agree.

What about
using the
facilities already provided by the OS to enforce the
sandbox? 

But then will it be possible to prevent buffer
overflows, still running on unmanaged code?

Very nice points by Dinis, esp. the one about the
"advantages" of using our boxes with less privileges
(for internet browsing).

-pilon

--- Brian Eaton <eaton.lists@gmail.com> wrote:

On 3/25/06, Dinis Cruz <dinis@ddplus.net> wrote:
4) Finally, isn't the solution for the creation of
secure and
trustworthy Internet Browsing environments the
development of browsers
written in 100% managed and verifiable code, which
execute on a secure
and very restricted Partially Trusted
Environments? (under .Net, Mono or
Java). This way, the risk of buffer overflows will
be very limited, and
when logic or authorization vulnerabilities are
discovered in this
'Partially Trusted IE' the 'Secure Partially
Trusted environment' will
limit what the malicious code (i.e. the exploit)
can do.

I am less than enthusiastic about most of the
desktop java
applications I use.  They are, for the most part,
sluggish, memory
gobbling beasts, prone to disintegration if I look
at them cross-eyed
or click the mouse too frequently.

Usability problems with java applications are not
necessarily due to
managed code, of course, but the idea of creating a
full-featured
browser, from scratch, with usability as good as IE
and Firefox
strikes me as a fairly tricky project.  What about
using the
facilities already provided by the OS to enforce the
sandbox?  Rather
than scrapping the existing codebases, start running
them with
restricted rights.  Use mandatory access control
systems to make sure
the browser doesn't overstep its bounds.

Regards,
Brian


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