I have jupyterhub(TLJH) running on my AWS. It is served on my site using an iframe. Since the latest chrome update, the "SameSite" cookie attribute is causing the following issue. The below image shows what I see in the Iframe
Given below is the warning I get in my console:
A cookie associated with a cross-site resource at http://www._____.com/ was set without the SameSite attribute. A future release of Chrome will only deliver cookies with cross-site requests if they are set with SameSite=None and Secure. You can review cookies in developer tools under Application>Storage>Cookies and see more details at https://www.chromestatus.com/feature/5088147346030592 and https://www.chromestatus.com/feature/5633521622188032.
When I disable the SameSite attribute in chrome://flags/, the iframe loads perfect.
I understand that I need to edit my cookie settings to add {SameSite=None; Secure} somewhere in jupyterhub, but I don't know where.
It looks to me as if you may be able to use the cookie_options setting to add SameSite=None; Secure to the cookies, but I am not 100% sure.
I've raised https://github.com/jupyterhub/jupyterhub/issues/3117 to ask the team to validate.
I could make it work only by making my server map to a subdomain. For example, say the main website which has the Iframe embed is www.mydomain.com, I had to map my Jupyter server to "subdomain.mydomain.com" to make it work.
It is obvious that the above approach was possible because the page I was trying to embed was owned by me. Hoping for an answer for the other scenario!
You can use jupyterhub proxy give your server a domain name like "http:***.mydomain.com" .But this must be subdomain of your site("http://www._____.com/")
Related
I am trying to help a company who is experiencing an issue with their ColdFusion website. The issue is a PCI scan failure due to "insecure cookies with HTTPOnly/ Secure Flag attributes".
Previously I fixed this error for 3 other cookies: JSESSIONID, CFID, CFTOKEN by editing the web.xml file; however, this time the issue is apparently with a session cookie created inside of the Application.cfm.
To be specific:
<cfapplication name="testname" sessionmanagement="Yes"
loginStorage="session" CLIENTMANAGEMENT="YES"
SESSIONTIMEOUT=#CreateTimeSpan(0,0,30,0)#>
So far I have tried following the CFApplication.html from Adobe (https://helpx.adobe.com/coldfusion/cfml-reference/coldfusion-tags/tags-a-b/cfapplication.html) to fix this, but have not had any luck. Any assistance or guidance is appreciated in fixing this matter. Thank you in advance!
Do you have access to the ColdFusion administrator for these sites? In the Server Settings-->Memory Variable section are universal settings for the session cookies: HTTPOnly and Secure Only. Make sure those are turned on.
In addition, do the sites use the CFCOOKIE tag. Make sure those tags are setting the 'secure' and 'httponly' attributes to TRUE.
Last, are the sites declaring COOKIE scoped vars in any CFPARAM tags/calls? If so, those will set cookies and are not secure and there is no setting I've found to make them so.
I've just noticed my console is littered with this warning, appearing for every single linked resource. This includes all referenced CSS files, javascript files, SVG images, and even URLs from ajax calls (which respond in JSON). But not images.
The warning, for example in case of a style.css file, will say:
Cookie “PHPSESSID” will be soon treated as cross-site cookie against “http://localhost/style.css” because the scheme does not match.
But, the scheme doesn't match what? The document? Because that it does.
The URL of my site is http://localhost/.
The site and its resources are all on http (no https on localhost)
The domain name is definitely not different because everything is referenced relative to the domain name (meaning the filepaths start with a slash href="/style.css")
The Network inspector just reports a green 200 OK response, showing everything as normal.
It's only Mozilla Firefox that is complaining about this. Chromium seems to not be concerned by anything. I don't have any browser add-ons. The warnings seem to originate from the browser, and each warning links to view the corresponding file source in Debugger.
Why is this appearing?
that was exactly same happening with me. the issue was that, firefox keeps me showing even Cookies of different websites hosted on same URL : "localhost:Port number" stored inside browser memory.
In my case, i have two projects configured to run at http://localhost:62601, when i run first project, it saves that cookie in browser memory. when i run second project having same URL, Cookie is available inside that projects console also.
what you can do, is delete the all of the cookies from browser.
#Paramjot Singh's answer is correct and got me most of the way to where I needed to be. I also wasted a lot of time staring at those warnings.
But to clarify a little, you don't have to delete ALL of your cookies to resolve this. In Firefox, you can delete individual site cookies, which will keep your settings on other sites.
To do so, click the hamburger menu in the top right, then, Options->Privacy & Security or Settings->Privacy & Security
From here, scroll down about half-way and find Cookies and Site Data. Don't click Clear Data. Instead, click Manage Data. Then, search for the site you are having the notices on, highlight it, and Remove Selected
Simple, I know, but I made the mistake of clearing everything the first time - maybe this will prevent someone from doing same.
The warning is given because, according to MDN web docs:
Standards related to the Cookie SameSite attribute recently changed such that:
The cookie-sending behaviour if SameSite is not specified is SameSite=Lax. Previously the default was that cookies were sent for all requests.
Cookies with SameSite=None must now also specify the Secure attribute (they require a secure context/HTTPS).
Which indicates that a secure context/HTTPS is required in order to allow cross site cookies by setting SameSite=None Secure for the cookie.
According to Mozilla, you should explicitly communicate the intended SameSite policy for your cookie (rather than relying on browsers to apply SameSite=Lax automatically), otherwise you might get a warning like this:
Cookie “myCookie” has “SameSite” policy set to “Lax” because it is missing a “SameSite” attribute, and “SameSite=Lax” is the default value for this attribute.
The suggestion to simply delete localhost cookies is not actually solving the problem. The solution is to properly set the SameSite attribute of cookies being set by the server and use HTTPS if needed.
Firefox is not the only browser making these changes. Apparently the version of Chrome I am using (84.0.4147.125) has already implemented the changes as I got this message in the console:
The previously mentioned MDN article and this article by Mike Conca have great information about changes to SameSite cookie behavior.
Guess you are using WAMP or LAMP etc. The first thing you need to do is enable ssl on WAMP as you will find many references saying you need to adjust the cookie settings to SameSite=None; Secure That entails your local connection being secure. There are instructions on this link https://articlebin.michaelmilette.com/how-to-add-ssl-https-to-wampserver/ as well as some YouTube vids.
The important thing to note is that when creating the SSL certificate you should use sha256 encoding as sha1 is now deprecated and will throw another warning.
There is a good explanation of SameSite cookies on https://web.dev/samesite-cookies-explained/
I was struggling with the same issue and solved it by making sure the Apache 2.4 headers module was enabled and than added one line of code
Header always edit Set-Cookie ^(.")$ $1;HttpOnly;Secure
I wasted lots of time staring at the same sets of warnings in the Inspector until it dawned on me that the cookies were persisting and needed purging.
Apparently Chrome was going to introduce the new rules by now but Covid-19 meant a lot of websites might have been broken while people worked from home. The major browsers are working together on the SameSite attribute this so it will be in force soon.
we are trying to set the samesite=none;secure in shopify app which is opening in iframe but we realised that it is being blocked by google chrome.
we are testing chrome 80 beta
we tried javascript and php but nothing is working.
app is embeded app and loading in iframe
here is php code
header('Set-Cookie: nameee=value; Max-Age=100; Domain=xyyyyy.com; Path=/; SameSite=None; secure;');
we tried java script also
document.cookie = "nameee=value;SameSite=none;secure;Domain=xxxx.com;Max-Age=100;path=/;";
our cookies are listed in blocked category here
https://imgur.com/g5tznq8
any help will be great. we followed all online articles but we can see our cookies are in blocked category for chrome
if you are using Shoify app gem, and dont want to upgrade your shopify_app or shopify api lib you can install this rails_sate_site_cookie gem
https://github.com/pschinis/rails_same_site_cookie
Two things I would look into; Is the environment protocol HTTPS? It needs to be for the 'Secure' cookie attribute to work, and then SameSite. Also the 'Secure' attribute needs to be Uppercase S... Secure
Lowercase/uppercase does not matter.
The most likely cause is that third party cookies (including your cookies, as they are for a cross-site iframe) are being blocked entirely. In your screenshot it says "third-party cookies are being blocked without exception".
Try going to chrome://settings/content/cookies and turning off third-party cookie blocking (or add an "Allow" entry for your site).
(This page has some information on testing and debugging SameSite cookies: https://www.chromium.org/updates/same-site/test-debug)
I am having a problem viewing a cookie value in Safari 6 developer tools. Just to be clear - the cookie works fine. I can see/fetch/echo the value of the cookie on the page. However, I can't see it in the Storage section of Web Inspector.
I'm wondering if the problem is multi-level subdomains. We have these:
www.domain.com
sub.domain.com
www.dev.int.domain.com (accessible only while on VPN)
We want this cookie accessible to all the domains, so we set a domain-level cookie like so (example):
Set-Cookie: UserLoginCookie=someencryptedvalue; Domain=.domain.com; Expires=Sun, 23-Mar-2014 00:02:56; Max-Age=31104000; Path=/; Version=1; HttpOnly
I'm looking in Web Inspector, in the Storage section, under Cookies.
When I load www.domain.com, I see the UserLoginCookie in the list.
When I load sub.domain.com, I see the UserLoginCookie in the list.
When I load www.dev.int.domain.com, I do NOT see the cookie, even though I can read/set it.
I've tried to google for this and search stackoverflow, but I've gotten nowhere. Does anyone know if this is a Safari bug or if there's just a step/option that I'm missing somewhere?
Thanks in advance for any help.
I am guessing this is a Webkit based bug that Safari has yet to fix - Webkit Developer Tools does not show parent domain cookies?
There is no easy way to do it as Safari removed the ability to see individual cookies from the Security tab: "Show Cookies" button missing as per this HOWTO. I have also tried the "Safari Cookies" plugin but it does not work as the cookie list did not refresh for me.
I've resolved to inspecting cookies with the 'document.cookie' in the developer console.
I am developing an app, which I will deploy on Heroku. The app is only used within an iframe on another site, so I don't care about the domain name. I plan to deploy my app on example.herokuapp.com instead of using a custom domain on example.com.
My app uses cookies, and I want to be sure that others cannot manipulate my cookies to protect my app against session fixation and similar attacks. If attacker.herokuapp.com is able to set a cookie for herokuapp.com, browsers will not be able to protect me, since herokuapp.com is not a public suffix. See http://w2spconf.com/2011/papers/session-integrity.pdf for a detailed description of the issue.
My question is: When browsers can't protect my users, will Heroku do it by blocking cookies for herokuapp.com?
Just wanted to post an update for anyone who ran across this question as I did. I was working on a similar problem, except that I wanted to purposefully allow access to the same cookie from two different heroku apps.
"herokuapp.com" and "herokussl.com" are now on the Public Suffix List, so your cookies should be safe if they are set for one of those domains. I ended up having to use custom domains in order to share cookies across both apps.
Heroku also released an article on the topic: https://devcenter.heroku.com/articles/cookies-and-herokuapp-com
I just tried to add a cookie from my Heroku app with the response header Set-Cookie: name=value;Path=/;Domain=.herokuapp.com, and to my disappointment, I could see the header intact in my browser. So the Heroku infrastructure does not detect and remove this cross-app supercookie.
I see three possible ways to protect a Heroku app against cross-app supercookies:
Don't use cookies at all.
Use a custom domain.
Verify that each cookie was actually set by your app, and restrict it to the client's IP address by checking the X-Forwarded-For header.
My feature request to Heroku would be that they should filter HTTP responses that goes through their HTTP routing, such that applications hosted on their infrastructure cannot set cookies with Domain=herokuapp.com.
It seems to me that, as long as you set the cookie for example.herokuapp.com, then the cookie is safe from manipulation. The cookie will only be presented to the app running on example.herokuapp.com and to herokuapp.com (where no app runs).