Thank you very much for bring this to the group’s attention. And for providing 
some great troubleshooting steps to see whether we might be affected. Thanks to 
others for providing other information as well.


On the one hand, I see it being a browser issue – autocompleting when it 
shouldn’t (although you’re asked at least once, are you not?) and ignoring the 
autocomplete=false…. But…

Should Cisco really be storing passwords in clear text anywhere?




---
Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1
519-824-4120 Ext. 56354 | [email protected]<mailto:[email protected]>

www.uoguelph.ca/ccs<http://www.uoguelph.ca/ccs> | @UofGCCS on Instagram, 
Twitter and Facebook

[University of Guelph Cornerstone with Improve Life tagline]

From: cisco-voip [mailto:[email protected]] On Behalf Of 
Anthony Holloway
Sent: Wednesday, March 14, 2018 9:50 PM
To: Cisco VoIP Group <[email protected]>
Subject: [cisco-voip] CUCM and Auto Fill Credentials

I'm working on something, and was wondering if you could check something for 
me, so I can better understand why and how often this is happening.

So, I was looking at phone config file today, and I noticed the ccmadmin 
username and password was in the XML, and in plain text nonetheless.

I found out that the browser, when told to remember your credentials, will 
treat the SSH username/password fields as login fields whenever you modify a 
phone, and you might be unknowingly save your credentials for clear text view 
by unauthenticated users.

Is anyone already aware of this?

You could you run the following command on your clusters:

run sql select name, sshuserid from device where sshuserid is not null and 
sshuserid <> ""

Then in the output, if there are any hits, look at the config XML file for the 
phone and see if the passwords are there.

E.g.,

output might be:

SEP6899CD84B710 aholloway

So then you would navigate your browser to:

http://<tftpserver>:6970/SEP6899CD84B710.cnf.xml<http://%3ctftpserver%3e:6970/SEP6899CD84B710.cnf.xml>

You then might have to view the HTML source of the page, because the browser 
might mess up the output.

You're then looking for the following two fields, your results will vary:

<sshUserId>aholloway</sshUserId>
<sshPassword>MyP@ssw0rd</sshPassword>

Then, since we now know it's happening, get list of how many different 
usernames you have with this command:

run sql select distinct sshuserid from device where sshuserid is not null and 
sshuserid <> "" order by sshuserid

This could also be happening with Energy Wise settings, albeit not on the same 
web pages.

I'm curious about two things:

1) Is it even happening outside of my limited testing scenarios?
2) How many different usernames and passwords were there?

If the answers are yes, and 1 or more, then this is an issue Cisco should 
address.

The reason it's happening is because the way in which browsers identify login 
forms, is different from the way in which web developers understand it to work. 
 Cisco uses the element attribute on these fields "autocomplete = false" and 
unfortunately, most browser ignore that directive.

I have noticed that this does not happen, if you have more than 1 saved 
password for the same site, rather it will only happen if you use the same 
login for the entire site.  Our highest chance of seeing this happen are for 
operations teams where they login with their own accounts, and do not use DRS 
or OS Admin.
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