I have gotten a number of calls where after I answer (I rarely answer but occasionally a number pops up that could be from a customer) the caller hangs up. I'm assuming it was a robo call (the calls are not just ones from my local area code and exchange.)
I got one of those calls a short time ago and began wondering what information is being sent by my phone to the caller. Almost immediately I got a little freaked out when I wondered if the caller could send spoofed caller ID messages that took advantage of a vulnerability in how my phone handles caller ID data.
I looked into the SDMF and MDMF formats and while they seem straightforward there are always potential holes waiting to be discovered.
I was thinking of malformed packets that could cause a buffer overrun or such like we see on IP links.
So the question is, are there any known hacks where people use a computer to send caller ID messages that open up the phone to attack or causes it to leak information apart from the normal name, address, etc.?