Welcome to the dark corner of BIOS reverse engineering, code injection and various modification techniques only deemed by those immensely curious about BIOS

Wednesday, August 31, 2016

Base-board Management Controller (BMC) Firmware Security

The security of the BMC firmware is very important, as compromising it means unfettered remote access to the target machine. There has been research into this area in the not too distant past:
All of them are interesting in their own right. Perhaps, Bonkoski's one is the most comprehensive? I don't know. I haven't dig into all of the papers myself.

Anyway, one of the most interesting development in BMC is OpenBMC, see: https://github.com/facebook/openbmc and https://code.facebook.com/posts/1601610310055392/introducing-openbmc-an-open-software-framework-for-next-generation-system-management/. Is it going to grant you access to Facebook-class infrastructure (from afar) if you find a flaw in it? Well, I don't think so, as it must've been protected by giant "firewall" in front of it. But, doing a code review on OpenBMC for flaws certainly a good exercise.

As a side note, let's not forget about Fujitsu, one of the most "underrated" server producer on the market. As a parting gift, let's look at what Fujitsu has in store in its BMC:

Fujitsu integrated Remote Management Controller TCP/UDP ports

Thursday, August 18, 2016

Firmware/BIOS-related Patent Filings

I don't know if security researchers are used to looking at patent filings--because I'm not officially one of them. However, I found that reading and trying to understand firmware/BIOS-related patent filings is enlightening. It is also interesting because the filings are related to each other via cross-referencing, which make the activity all the more interesting, given enough time to dig into it. Among other thing, it provides a view ahead in this cat and mouse game of protecting and breaking firmware. These are some of my picks (not necessarily new ones):
The one that interest me the most is the last one because it's a sort of insight into Baseboard Management Controller (BMC) stuff. I hope you enjoy the patent filings as much as I do ;-)