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Re: Re: [WEB SECURITY] Cross Site Scripting in Google
From: Javor Ninov <drfrancky () securax org>
Date: Thu, 06 Jul 2006 07:59:45 +0300



RSnake wrote:

Just for the record, I should clarify. Google was not notified of this
exploit prior to full disclosure. As I said, they are notoriously slow
(or completely delinquent) in fixing these issues historically. If you
need proof click here to see four redirect issues disclosed nearly 6
months ago that are still not fixed.

http://seclists.org/lists/webappsec/2006/Jan-Mar/0066.html

Here's another one:

http://www.google.com/url?sa=D&q=http://www.fthe.net

Typically I don't believe in full disclosure as a release methodology
(for instance, if I found a remote vulnerability in Microsoft, I
wouldn't disclose that without giving Microsoft months to release a
patch as they have taken their patching process very seriously as of
late and their responsibility in this matter has been far improved).
Either Google was not convinced when they were used as a phishing relay
last time, or they do not take this seriously.  Either way, it takes all
but a few days to patch these issues in a website, QA them and releast
them, and Google has not done so, making contacting the vendor a useless
excersize to date, in my opinion.

my opinion is that full disclosure is not for vendors .. it's for users.
full disclosure is for us to know how to react on certain threads. i
personally don't care about the vendors , although my company is a
vendor itself . we also produce software and we also care about security
of our software. but i expect users to post to security groups instead
of mailing me personally. If the vendor cares about his users he should
watch the security groups.

I believe in FULL disclosure
And i think this is the better way.

--
Javor Ninov aka DrFrancky
securitydot.net

On Wed, 5 Jul 2006, bugtraq () cgisecurity net wrote:

Did you even bother to email them and let them know? Being that
they're still vulnerable probably not....

- z



Google is vulnerable to cross site scripting attacks.  I found a
function built off their add RSS feed function that returns HTML if a
valid feed is found.  It is intended as an AJAXy (dynamic JavaScript
anyway) call from an inline function and the page is intended to do
sanitation of the function.  However, that's too late, and it returns
the HTML as a query string, that is rendered, regardless of the fact
that it is simply a JavaScript snippet.

Here is the post that explains the whole thing:

http://ha.ckers.org/blog/20060704/cross-site-scripting-vulnerability-in-google/



-RSnake
http://ha.ckers.org/
http://ha.ckers.org/xss.html
http://ha.ckers.org/blog/feed/

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-R

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