Dailydave mailing list archives

Re: Google Chrome Browser Flaw


From: "Rhys Kidd" <rhyskidd () gmail com>
Date: Wed, 3 Sep 2008 23:16:24 +0800

Ah, no.

Google doesn't "own" the intellectual property in relation to the alleged
vulnerability on the mere basis that Rishi's previous email was sent from a
GMail account, and thus you assume from a Chrome browser - correct me if
this isn't your proposition.

Acceptance of Google's Chrome EULA means you assign a *license* to Google to
"*reproduce, adapt, modify, translate, publish, publicly perform, blah blah
blah*" your content. Licensing != transfer of ownership in common law
jurisdictions.

Yes, I agree the EULA seems a bit over the top, but after a few more
re-reads appears to be a non-technically aware lawyer's attempt to cover
their bases on doing things like gzip/deflate HTTP encoding..

"*11.3 You understand that Google, in performing the required technical
steps to provide the Services to our users, may ... make such changes to
your Content as are necessary to conform and adapt that Content to the
technical requirements of connecting networks, devices, services or media*"

Rhys

2008/9/3 Isaac Dawson <isaac.dawson () gmail com>

Just remember,
According the EULA you 'clicked', google now owns any vulnerability you
find!

http://tapthehive.com/discuss/This_Post_Not_Made_In_Chrome_Google_s_EULA_Sucks
-isaac

On Wed, Sep 3, 2008 at 11:04 AM, Rishi Narang <psy.echo () gmail com> wrote:
Hi,

Here is a flaw in just released Google Chrome Browser (Beta). This not a
really a "Jail-Break" remote execution type of serious vulnerability (till
now, it doesn't seem one) but surely crashes the application (all tabs) and
needs a browser restart. But, as a whole the browser surely is very neat and
fast!

Google with its own simplicity and creativity, has taken integrated
features of top browsers - Firefox, IE, Safari etc. Hope, it didn't catch
their bugs too, as the old Carpet Bombing Attack and other speculations
going in wild!

---------------------------------------------------
Software:
Google Chrome Browser 0.2.149.27

Tested:
Windows XP Professional SP3

Result:
Google Chrome Crashes with All Tabs

Problem:
An issue exists in how chrome behaves with undefined-handlers in
chrome.dll version 0.2.149.27. A crash can result without user
interaction. When a user is made to visit a malicious link, which has an
undefined handler followed by a 'special' character, the chrome crashes with
a Google Chrome message window "Whoa! Google Chrome has crashed. Restart
now?". It crashes on "int 3" at 0x01002FF3 as an exception/trap (kernel),
followed by "POP EBP" instruction when pointed out by the EIP register at
0x01002FF4.

Proof of Concept:
http://evilfingers.com/advisory/google_chrome_poc.php

Credit:
Rishi Narang
www.greyhat.in
www.evilfingers.com
---------------------------------------------------

--
Thanks & Regards,
Rishi Narang | Security Researcher
Founder, GREYHAT Insight
Key: 0x8D67A3A3 (www.greyhat.in/key.asc)
www.greyhat.in

... eschew obfuscation, espouse elucidation.

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