Fax machine + Cisco ATA + IP + CallManager = Fax machine
Fax machine can = software
Fax can be IP/Software based....a possible vector for an attack.
________________________________
From: listbounce_at_securityfocus.com on behalf of Craig Wright
Sent: Fri 3/2/2007 11:51 PM
To: anonymous_at_email.com; security-basics_at_securityfocus.com
Subject: RE: FAX a virus
FAX!
There is NO UDP/IP port. NO TCP/IP port. No IP Address.
FAX is not IP based.
Not theory at all. FUD!
Craig
________________________________
From: listbounce_at_securityfocus.com on behalf of anonymous_at_email.com
Sent: Fri 2/03/2007 6:31 AM
To: security-basics_at_securityfocus.com
Subject: Re: FAX a virus
Perhaps something along these lines:
Dependant on resolving the phone number to an IP address of course, but once that information is found either through social engineering or voip probes you could use nmap to find which port is working as the fax reciever then attempt to determine the type of fax machine and from there if you knew assembly could *possibly (if the fax machine allowed remote firmware upgrades) rewrite the firmware of the machine itself but a more practical method would be to temporarily store information in the buffer of the fax machine (this would cause garbage to be printed for one thing which would be a big annoyance).
And from what you have described from your setup the software itself may be vulnerable to memory bounds checks etc. You would want to research the software using lists such as this if you are truely afraid of vulnerabilities in your fax application.
Again this is more theoretical then practical but you get the idea.
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Received on Mar 06 2007
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