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wdormann's profile
Will Dormann
Will Dormann
Will Dormann
@wdormann

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Will Dormann

@wdormann

Vulnerability Analyst at the CERT/CC. My thoughts are my own, not my employer's.

Joined August 2012

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    1. Brian in Pittsburgh‏ @arekfurt 14 Dec 2019
      • Report Tweet
      • Report NetzDG Violation

      Brian in Pittsburgh Retweeted Marcus Mengs

      It sure would be nice if Windows client would pop-up some sort of dynamic challenge (like eg. a very simple CAPTCHA) on screen when a peripheral reporting as an HID device was plugged in before allowing input from that device to manipulate things in the OS. Sure would be nice.https://twitter.com/mame82/status/1205538348934352897 …

      Brian in Pittsburgh added,

      1:27
      Marcus Mengs @mame82
      USBSamurai Pro 😉 USB cable with implant for bi-directional RF communication connects mobile phone in airplane mode, with Win10 box (no network connections). 2nd mobile injects keystrokes and brings up a covert channel shell, using the RF implant. File transfer still works pic.twitter.com/yAAQST6onL
      Show this thread
      5 replies 11 retweets 31 likes
    2. Will Dormann‏ @wdormann 14 Dec 2019
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      Replying to @arekfurt

      The @certcc notified both Microsoft and Apple about these sorts of attacks almost 10 years ago, tracked as VU#522033. Microsoft - no reply. Apple - "The screen lock on Mac OS X is an effective mitigating factor against this "attack". "

      1 reply 1 retweet 3 likes
    3. Jeremy Windmiller‏ @j_windmiller 14 Dec 2019
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      Replying to @wdormann @platformsec and

      While it is targeted for enterprises, there are USB controls in W10 to mitigate these type of threats.https://docs.microsoft.com/en-us/windows/security/threat-protection/device-control/control-usb-devices-using-intune#block-untrusted-and-unsigned-processes-on-usb-peripherals …

      1 reply 0 retweets 1 like
      Will Dormann‏ @wdormann 14 Dec 2019
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      Replying to @j_windmiller @platformsec and

      I don't think any of those protections would help against a malicious USB HID (e.g. Keyboard) device.

      8:07 AM - 14 Dec 2019
      • 1 Like
      • Brian in Pittsburgh
      1 reply 0 retweets 1 like
        1. New conversation
        2. Jeremy Windmiller‏ @j_windmiller 14 Dec 2019
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          Replying to @wdormann @platformsec and

          They possibly could be creatng a whitelist of approved USB devices by HID and these are the only ones that would be installed. https://docs.microsoft.com/en-us/windows/security/threat-protection/device-control/control-usb-devices-using-intune#allow-installation-and-usage-of-specifically-approved-peripherals … Obviously if a malicious HID is spoofing a legitimate keyboard then that would be an issue.

          1 reply 0 retweets 1 like
        3. Brian in Pittsburgh‏ @arekfurt 14 Dec 2019
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          Replying to @j_windmiller @wdormann and

          It's certainly better than nothing, in that it would force an attacker to do host-specific recon rather than just being able to take a device and use it opportunistically on any machine you come across. But one would like something more capable vs the spoofing problem.

          1 reply 0 retweets 1 like
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