Instant gratification is not worth a $30 surcharge.
Another article on this, I agree with Dan's assessment - http://arstechnica.com/securit...
"Never attribute to malice that which can be attributed to stupidity."
My guess, after years of working with Samsung's poor-quality platform software and multiple runins with their utterly piss-poor configuration management processes (as in, the Korean divisions at Samsung Mobile don't seem to have any, as evidenced by numerous situations during the Superbrick fiasco):
Samsung probably put this into the RIL library to facilitate modem debugging. e.g. the modem can read/write to
Keep in mind that, based on the reverse engineering effort, Samsung *intended* this feature to only access files within
So at some point, Samsung probably removed the corresponding components on the baseband firmware side (no one has yet to confirm anything on the modem side that sends these commands, nor has anyone caught any of these commands being issued - the behavior of the library was verified by injecting extra commands with a kernel patch in the driver between the modem and the library), but someone forgot to remove them from the RIL library on the applications processor side. Forgetting to remove dead code and/or leaving epic security holes in place (remember that in late 2012, someone realized that Samsung left a world readable/writable device node that effectively mapped all system memory to that device file - allowing anyone to read or write any part of memory. For more, do a Google search for "exynos-abuse" ) is pretty typical for Samsung.
As to my experience here - I was one of the Cyanogenmod maintainers for the Exynos 4210 (I9100, I777, N7000) handset family, and also did some work on 4412 devices (primarily the Note 10.1 - GT-N8013) throughout 2012 and the first half of 2013. I'm 90% retired from working with Haxxinos these days and was (along with the majority of the rest of the Exynos maintainers) one of the people who left the project to start Omni after the Focal relicensing attempt fiasco.
An interesting question is - what architecture is the XMM626x's baseband processor? Is it custom or an ARM variant making it easier to analyze the baseband firmware itself? More than two years of working with that family of devices and I never personally looked in detail at what was running on the baseband side.
They've been messing with the model due to budget cuts over the last few years, and I hear it's not as rosy as it used to be. But for the first 18 years of my life, I never realized that being sick could cost so much.
Depending on where you go, a "routine" doctor's visit can range from $50 to $200. Still, it's much cheaper for both you and an insurance company to cover a once a year "wellness" visit and catch anything early on than it is for you to skip the yearly visit since it costs an extra $50, and then suddenly learn you've had a slow growing tumor in your ear and now you're going deaf.