oss-sec mailing list archives
Re: BadUSB discussion
From: gremlin () gremlin ru
Date: Fri, 8 Aug 2014 22:50:59 +0400
On 08-Aug-2014 22:27:16 +0400, (GalaxyMaster) wrote:
Alexey,
Aye, Dmitry? :-)
That doesn't prevent any other USB HID device from being plugged in and instantly working. Which again, you can prevent if you want to, but no one seems to do that...Hmmm... To avoid possible confusion: that was CONFIG_USB_KBD - "USB HIDBP Keyboard (simple Boot) support", and CONFIG_USB_HID was turned off.I think Greg was referring to kernel's feature of controlling power on USB ports (e.g. you can just switch of power for a port and nothing you insert there will have a chance to work until you instruct the kernel to switch the port back on).
That may be good for servers, but almost unusable on worstations: people tend to charge mobile devices while they work. Personally I'd like to be able to shorten D+ and D- lines for all unused ports and keep them in "charge-only" state. However, that'll require disconnecting them from the socket to get this scheme: Host Device VCC ---------------- VCC D- ---+ +--- D- | | D+ ---+ +--- D+ GND ---------------- GND It is possible, but adding even a single component to a system board causes a marketoids' butthurt.
Bus 002 Device 064: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse Device IDs tell us the hub was reset several times :-)... or somebody insanely was plugging mouse in and out in a cycle :)
That device wasn't a mouse, but I really appreciate your idea :-) -- Alexey V. Vissarionov aka Gremlin from Kremlin <gremlin ПРИ gremlin ТЧК ru> GPG: 8832FE9FA791F7968AC96E4E909DAC45EF3B1FA8 @ hkp://keys.gnupg.net
Current thread:
- Re: BadUSB discussion, (continued)
- Re: BadUSB discussion Rich Felker (Aug 08)
- Re: BadUSB discussion Greg KH (Aug 08)
- Re: BadUSB discussion Willy Tarreau (Aug 09)
- Re: BadUSB discussion Yves-Alexis Perez (Aug 09)
- Re: BadUSB discussion Willy Tarreau (Aug 09)
- Re: BadUSB discussion gremlin (Aug 08)
- Re: BadUSB discussion Greg KH (Aug 08)
- Re: BadUSB discussion gremlin (Aug 08)
- Re: BadUSB discussion Greg KH (Aug 08)
- Re: BadUSB discussion gremlin (Aug 08)
- Re: BadUSB discussion (GalaxyMaster) (Aug 08)
- Re: BadUSB discussion gremlin (Aug 08)
- Re: BadUSB discussion Greg KH (Aug 08)
- Re: BadUSB discussion Greg KH (Aug 08)