Educause Security Discussion mailing list archives

Re: Interesting "caching" problem - anyone using a Gmail "channel" in Ellucian's "Luminis" portal??


From: David H Gunnells <gunnells () UAB EDU>
Date: Mon, 11 Aug 2014 19:26:37 +0000

Have you tried specifying cookie and site data exceptions for specific domains?

Go to chrome://settings/contentExceptions#cookies

Add exceptions such as the following:

[*.]mail.google.com  Clear on exit
[*.]google.com       Clear on exit
[*.]www.google.com   Clear on exit

Be sure to include any Google Apps subdomain(s) and other domains (e.g. *.cnm.edu) that the kiosk browser may be 
accessing.

Additionally, ensure that "Continue where you left off" is not activated. If enabled, that option will cause sessions 
to continue beyond browser restarts.

Another option to look at is under Content settings (chrome://settings/content): Keep local data only until you quit 
your browser
That option will cause Chrome to discard sessions cookies and other side data even if you have Chrome set to reopen 
pages at startup.

And finally, you have to ensure that Chrome is actually closing when the window is closed. It's possible for a Chrome 
app to be running in the background, keeping Chrome running and the parent process not exiting, thereby not initiating 
the cookie/session clearing that one expects to take place. You can disable all background apps from running when 
you've closed Chrome by going to chrome://settings > click Show advanced settings > under "System" deselect the 
"Continue running background apps when Google Chrome is closed" checkbox.

David

From: The EDUCAUSE Security Constituent Group Listserv [mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of SCHALIP, 
MICHAEL

Yep - tried that, too.....but it still hangs on, and Google insists that everything is "working as designed".....

Michael

From: The EDUCAUSE Security Constituent Group Listserv [mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of Jesse 
Safran

Set your browser defaults to delete history/cache/cookies on exit?

On Mon, Aug 4, 2014 at 9:45 AM, SCHALIP, MICHAEL <mschalip () cnm edu<mailto:mschalip () cnm edu>> wrote:
Hi folks,

We have an interesting, yet troubling, problem.  We use Ellucian's "Luminis" portal as part of our Banner system - and 
one of the "channels" that we have on our Luminis portal is directly to Gmail, because we outsourced our student email 
to Google about 2 years ago.  What we have discovered is:
1.      "Student A" walks up to an open kiosk system in our Admissions area and logs in to Luminis with their own 
credentials
2.      "Student A" clicks on the Gmail "channel" in the Luminis portal and checks their email
3.      "Student A" finishes reading their email and just closes the active window, (ie, clicks on the "X" in the upper 
right corner of the window) and walks away....
4.      Now - "Student B" walks up to the same open kiosk - they open a new browser window and is prompted to login to 
Luminis with their own credentials
5.      "Student B" clicks on the Gmail channel in the Luminis portal to check their email
6.      PROBLEM - what "Student B" finds is that they are NOT in their own email - in fact, "Student B" has full access 
to "Student A's" email, because the cookie left behind by Google with the first student has kept the session active, 
even once the browser is closed.

....and the browser doesn't seem to matter.  It works this way in IE, Chrome - all versions, apparently.

We've run this problem all the way up to Ellucian *and* Google.  Google says everything is "working as designed" - 
there's no way to keep the cookie from remaining resident and active, as long as the system isn't rebooted.  The only 
thing that *appears* to work is making the student explicitly logout of the Luminis session when they are done.....but 
- since these systems are setup to be self-service kiosks, there's not always someone there to remind students to "log 
off before you leave", so we have students closing the window thinking that they've "logged off", but the next student 
steps up, logs in, and gets the previous student's email.

The problem doesn't seem to occur with any other "channels" - and we've tried just about everything within the browser, 
with the Gmail settings, popup blockers, security settings on the OS, etc.  Ellucian seems to be very perplexed by our 
inquiries - seems that no one else is experiencing this except us....??

Anyone else see or experience anything like this?

Anyone else already *solve* a problem like this?

Thanks for your time and consideration.....

Michael Schalip
Dir, ITS/Customer Support Services
Central New Mexico Community College

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