oss-sec mailing list archives

Re: BadUSB discussion


From: lazytyped <lazytyped () gmail com>
Date: Fri, 08 Aug 2014 09:21:19 -0700

On 08/08/2014 09:17, Greg KH wrote:
There is a USB firmware download spec, which is quite easy to use, if
manufacturers actually followed it (side note, I was one of the authors
of that spec...)  And if USB device manufacturers actually required
signed firmware to run in their devices, that would solve this issue
instantly as long as the signing keys don't leak.

Or, for cheap devices like USB dongles, just keep the firmware
read-only. Who's going to update it anyway.

But yes, either the update should be signed and verified, or
hardware-switch controlled or impossible to begin with (read-only). Not
only for USB devices.


      -  twiz


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