Jonas L on Twitter: "I know- I just throw out some hints so it maybe becomes doable. like- all these protocols: https://t.co/b1QgbCDtNC… "

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This problem seems to be introduced around the time of Windows 10 1803. Prior versions of Windows do not appear to be affected. I'll give Microsoft a shot at addressing this before disclosing what the value of <specialdir> is. Though I question how such things get prioritized...

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Will Dormann‏ @wdormann Jan 9

Will Dormann Retweeted Will Dormann

Why? Almost 2 years ago I reported to them NTFS filesystems that can cause windows to BSOD when they're mounted. e.g. by double-clicking a VHD or VHDX file. That's still not fixed.https://twitter.com/wdormann/status/1095799927765127170 …

Will Dormann added,

Will Dormann @wdormann

Inspired by my earlier accidental discovery that a FreeNAS 11.2 ISO written to a USB drive with Rufus will cause Windows 7 to BSOD, I got to wondering how well modern operating systems handle malformed filesystems. Windows, Linux, macOS, FreeBSD all fail. https://www.youtube.com/watch?v=r3MeifE2oFw …

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Will Dormann‏ @wdormann Jan 16

And since the cat it is out of the bag: https://www.bleepingcomputer.com/news/security/windows-10-bug-corrupts-your-hard-drive-on-seeing-this-files-icon/ … It's probably worth mentioning that browsing the internet with old Edge browser could lead to NTFS corruption. It will happily allow a page on the internet to reference a local path. Don't use that Edge version.

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Will Dormann‏ @wdormann Jan 16

I've not seen another modern browser that allows a page that lives on the internet to be able to directly access a local file resource. But "classic" (non-Chromium) Edge? YOLO!pic.twitter.com/PvMz3PkakX

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Will Dormann‏ @wdormann Jan 16

Compare this vs. the Chromium-based Edge, or just about any other browser. A page on the internet can't just directly access a file on your local filesystem. Because this is dangerous.pic.twitter.com/5FWee5tqNd

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Will Dormann‏ @wdormann Jan 17

And while I haven't seen a variant that can trigger it directly from a (legacy) Edge browser on an internet page, it's worth mentioning that there's a vaguely-related (badness via accessing a path) BSOD bug released recently:https://www.bleepingcomputer.com/news/security/windows-10-bug-causes-a-bsod-crash-when-opening-a-certain-path/ …

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Will Dormann‏ @wdormann Jan 18

Specifically, I didn't see a way to get legacy Edge to obey the '.' in \\.\globalroot\device\condrv\kernelconnect However, as with the NTFS corruption bug, this can be triggered by something as innocuous as opening a file from a website. e.g., an ISO file:pic.twitter.com/AQL7Flfpk6

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Jonas L‏ @jonasLyk Jan 18

Replying to @wdormann

The way it works is: \\.\ or \\?\ or \??\ will start by looking in the callers local devicemappic.twitter.com/xBkouKg9wZ

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Jonas L‏ @jonasLyk Jan 18

Replying to @jonasLyk @wdormann

if nothing found there- look in \GLOBAL?? there we find a symlink named GLOBALROOTpic.twitter.com/CEbruD2Plz

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Will Dormann‏ @wdormann Jan 18

Replying to @jonasLyk

While classic Edge dangerously allows web content in the internet to link to resources on the local system, I've found that it's picky about what sorts of URIs it allows. What I'm saying is that I haven't yet found a URI to trigger the BSOD that classic Edge allows. Incl GLOBAL??

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Jonas L‏ @jonasLyk Jan 18

Replying to @wdormann

I know- I just throw out some hints so it maybe becomes doable. like- all these protocols:https://pastebin.com/ZQ5Nwnpq

8:43 AM - 18 Jan 2021

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1. Will Dormann‏ @wdormann Jan 18
  Replying to @jonasLyk
  
  Yeah, I don't doubt that it's possible. It's just that the small handful of attempts I tried were unfruitful.
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1. Jonas L‏ @jonasLyk Jan 18
  Replying to @jonasLyk @wdormann
  
  the res protocol in interesting in particular
  Thanks. Twitter will use this to make your timeline better. Undo
  
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