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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">But, it’s not that the “endpoint is vulnerable to security breach” – it’s the whole system!<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">---<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-family:"Arial",sans-serif">Lelio Fulgenzi, B.A.</span></b><span style="font-family:"Arial",sans-serif"> | Senior Analyst<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:#333333">Computing and Communications Services</span><span style="font-family:"Arial",sans-serif"> | University of Guelph<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">519-824-4120 Ext. 56354 |
<a href="mailto:lelio@uoguelph.ca"><span style="color:#0563C1">lelio@uoguelph.ca</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="http://www.uoguelph.ca/ccs"><span style="font-family:"Arial",sans-serif">www.uoguelph.ca/ccs</span></a><span style="font-family:"Arial",sans-serif;color:#1F497D"> | @UofGCCS on Instagram, Twitter and Facebook<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><img border="0" width="187" height="100" style="width:1.9479in;height:1.0416in" id="Picture_x0020_1" src="cid:image001.png@01D3E064.C2A040B0" alt="University of Guelph Cornerstone with Improve Life tagline"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>From:</b> cisco-voip <cisco-voip-bounces@puck.nether.net>
<b>On Behalf Of </b>Anthony Holloway<br>
<b>Sent:</b> Monday, April 30, 2018 9:11 AM<br>
<b>To:</b> Cisco VoIP Group <cisco-voip@puck.nether.net><br>
<b>Subject:</b> Re: [cisco-voip] CUCM and Auto Fill Credentials<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">UPDATE<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I just upgraded a system to CUCM 11.5(1)SU4 (11.5.1.14900-11) and when I went to change the Device Pool on this phone, I saw this message at the top:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><img border="0" width="1239" height="387" style="width:12.9062in;height:4.0312in" id="_x0000_i1025" src="cid:image002.png@01D3E064.C2A040B0" alt="image.png"><br>
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And when I scrolled down to the Secure Shell section, sure enough, my administrator credentials were in there.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><img border="0" width="798" height="236" style="width:8.3125in;height:2.4583in" id="_x0000_i1026" src="cid:image003.png@01D3E064.C2A040B0" alt="image.png"><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">So, the problem still persists, but Cisco is trying to make you aware that it happened. Of course, if you don't see it, or don't understand it, you're not going to correct it. Also, who wants to scroll down and erase the credentials every
time they make a change? Not many, I'd wager.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I did not test all of the pages where this can happen, to see if Cisco caught them all, but this was the major offender in my opinion.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, Mar 14, 2018 at 8:49 PM Anthony Holloway <<a href="mailto:avholloway%2Bcisco-voip@gmail.com">avholloway+cisco-voip@gmail.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">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.</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">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.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">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.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">Is anyone already aware of this?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">You could you run the following command on your clusters:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Courier New"">run sql select name, sshuserid from device where sshuserid is not null and sshuserid <> ""</span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">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.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">E.g., <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">output might be:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Courier New";color:#CC0000">SEP6899CD84B710</span></b><b><span style="font-size:9.5pt;font-family:"Courier New""> aholloway</span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">So then you would navigate your browser to:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Courier New""><a href="http://%3ctftpserver%3e:6970/SEP6899CD84B710.cnf.xml">http://<tftpserver>:6970/SEP6899CD84B710.cnf.xml</a></span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">You then might have to view the HTML source of the page, because the browser might mess up the output.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">You're then looking for the following two fields, your results will vary:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Courier New""><sshUserId>aholloway</sshUserId></span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Courier New""><sshPassword>MyP@ssw0rd</sshPassword></span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">Then, since we now know it's happening, get list of how many different usernames you have with this command:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.5pt;font-family:"Courier New"">run sql select distinct sshuserid from device where sshuserid is not null and sshuserid <> "" order by sshuserid</span></b><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">This could also be happening with Energy Wise settings, albeit not on the same web pages.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">I'm curious about two things:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">1) Is it even happening outside of my limited testing scenarios?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">2) How many different usernames and passwords were there?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">If the answers are yes, and 1 or more, then this is an issue Cisco should address.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">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.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:9.5pt;font-family:"Arial",sans-serif">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.<o:p></o:p></span></p>
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