WebApp Sec mailing list archives

Re: [WEB SECURITY] Seeking feedback on proposed security restriction in the browsers


From: "Ryan Barnett" <rcbarnett () gmail com>
Date: Fri, 10 Aug 2007 20:27:48 -0400

Ivan Ristic wrote a proposal paper about a year ago called "Secure
Browsing Mode" that you might want to look at -
http://www.modsecurity.org/blog/archives/Secure_Browsing_Mode_Proposal.pdf

It also references Gervase's paper.


On 8/10/07, Anurag Agarwal <anurag.agarwal () yahoo com> wrote:
I am looking to get views from people on the list about a proposed security
restriction in the browsers

The browser should check with the webserver which domains it can interact
with (load files from or submit post data to, etc) for that website. How the
check is implemented is upto the browser.

For example: If a page from mybank.com is trying to submit data to
attacker.com then before submitting the data, the browser should check with
the mybank.com if it is allowed to do so.

Q1. is it reasonable?
Q2. What are the pros and cons of this approach?
Q3. Would it limit some types of browser attacks (like some xss vectors,
etc)?
Q4. Would it open any new types of attack vectors?


I know there are security researchers, browser vendors, corporate security
folks and various other smart webappsec people on this list. I would really
appreciate if they can chip in with their 2 cents on this topic.


Any feedback is highly appreciated

Cheers,

Anurag Agarwal

SEEC - An application security search engine
Web: www.attacklabs.com , www.myappsecurity.com
Email : anurag.agarwal () yahoo com
Blog : http://myappsecurity.blogspot.com


-- 
Ryan C. Barnett
ModSecurity Community Manager
Breach Security: Director of Application Security Training
Web Application Security Consortium (WASC) Member
CIS Apache Benchmark Project Lead
SANS Instructor, GCIA, GCFA, GCIH, GSNA, GCUX, GSEC
Author: Preventing Web Attacks with Apache

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