0
votes
1answer
50 views

Understanding Same origin policy

I am trying to understand same origin policy better. From what I understand same origin policy restricts code from one "origin" not access data from another "origin". What I am trying to understand is ...
1
vote
2answers
95 views

Securely render SVG

How can I securely render SVG documents in a media sharing application? I think the same-origin policy might help a bit if I host the SVG documents on a separate domain and render them inside an ...
5
votes
1answer
506 views

Child iFrame hash verification of parent iFrame content

Consider the following scenario: Alice wishes to browse Victor's website while on the job at Initech. Victor's website is hosted on an alternative domain name system to which Initech's DNS does not ...
1
vote
1answer
540 views

What is the “about:blank” context for browser security and privacy?

This blog is describing a way to hide the referer header in various situations. Specifically he is referring to things that run in the about:blank context. What is the about:blank context? How does ...
1
vote
2answers
135 views

How do browsers know which cookie to get?

I tried writing a script that would display the contents of a cookie set by another website but it didn't work. <?php echo 'Website cookie is '.$_COOKIE['locale']; ?> But I get an undefined ...
10
votes
1answer
643 views

How can I embed iframe securely without restricting its functionality?

I'd want to embed an iframe from untrusted site into web application. Iframe: should be able to run Javascript and browser plugins (Flash, etc.) should not be able to access my web application ...
5
votes
1answer
894 views

Same-origin policy for file: URLs in Android browser?

When you load a file:// URL in an Android WebView or in the Android browser, what does it treat as the origin? What can the Javascript on that page access? Can it access other files in the same ...
9
votes
2answers
462 views

User-specific Subdomains : JavaScript security

If I provide a public-facing website for users on my website at their own subdomain (e.g. bob.myapp.com) under their own control, can I allow them to execute arbitrary JavaScript without putting my ...
1
vote
3answers
373 views

Why can I read the response to this CSRF attack?

I have a website www.foo.com:8002 that I have resolve to 127.0.0.1:8002 in my hosts file. I have another (the main site) running at localhost:80 In www.foo.com:8002 the page looks like <form ...
3
votes
1answer
211 views

Client-side cross-site access in SSL environment - when it's still possible to do?

I'm trying to imagine an secure sandboxed environment for an application which is big and unexplored, and may contain backdoors. It would live under chroot/virtual environment with no outgoing ...
3
votes
3answers
2k views

Do browsers allows pages loaded on one tab to access/intercept/inject data in other tabs?

I was surprised to hear from this Reuters video that it was possible for a page loaded on one tab to access and/or inject data onto another page loaded on a different tab. TL;DW (too lazy; didn't ...
9
votes
2answers
3k views

Using iframes to sandbox untrusted code

I'm trying to create an extensible platform, where my site will provide a model and some views (both client-side, in the browser) and third party sites may add their own views as well. The goal here ...
3
votes
1answer
215 views

What servers or clients are immune to related-domain cookie attacks? (*.example.com)

In this question, I want to identify browsers, servers, or implementations that are immune from related domain cookie attacks (e.g. a.example.com vs b.example.com). Lacking any tangible solution, ...
4
votes
1answer
2k views

cookie path protection within same domain

The answer to this question about how cookies are potentially vulnerable between sub-domains sparked my curiosity. As far as I know, if a cookie is set on a sub-path of the same domain ...
3
votes
3answers
350 views

Are there any same origin issues (SOP) with TOR?

Are there any issues with Same Origin Policy (SOP) with TOR or *.onion addresses? I'm thinking of cookies Plugins (Silverlight, Flash, Java, etc) Javascript
28
votes
3answers
8k views

Why is the same origin policy so important?

I can't really fully understand what same origin domain means. I know it means that when getting a resource from another domain (say a JS file) it will run from the context of the domain that serves ...