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Posts tagged as “usb”

Researchers Release USB Exploit & Incomplete Fix on GitHub

Now that a working exploit of the USB vulnerability that’s baked-in to the USB standard has been released, it might be a prudent move to no longer employ any USB devices that aren’t already under your control until this situation has been fixed.

The exploit was first made public two months ago at the Black Hat conference in Las Vegas when Karsten Nohl and Jakob Lell of Berlin based Security Research Labs (SRL) demonstrated an attack they called BadUSB to a standing-room-only crowd.

USB Ports Are No Longer Your Friend (If They Ever Were)

Just because the good guys have discovered a new security risk doesn’t mean the bad guys haven’t known about it forever. The risk is only new to us. It’s actually been there for a long time, maybe forever. Who knows how long everyone from the black hats in Moscow to the NSA in bucolic Maryland have been taking advantage of what appears to us to be a “new” exploit?

The USB security hole recently unveiled by Berlin based Security Research Labs (SRL) seems to be of those that’s been around “forever.”

USB exploit infecting LinuxUSB exploit infecting Linux
A slide used by Security Research Labs at the Black Hat USA security conference explaining how a USB device can be infected by a Windows computer in order to gain root access on Linux.
(click to enlarge)
While it shouldn’t be news to anybody that caution should be exercised when using USB devices, the new exploit would seem to indicate that even the most draconian security measures, short of doing away with USB devices entirely, might not be enough. The recently revealed problem has to do with the USB controller chip found in most, if not all, USB devices. The chip basically identifies the device type to the computer.

The trouble is, most of these chips are relatively easy to reprogram.

Christine HallChristine Hall

Christine Hall has been a journalist since 1971. In 2001, she began writing a weekly consumer computer column and started covering Linux and FOSS in 2002 after making the switch to GNU/Linux. Follow her on Twitter: @BrideOfLinux

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