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CrowdStrike downtime apparently caused by update that replaced a file with 42kb of zeroes (twiiit.com)

submitted 5 months ago* (last edited 5 months ago) by [email protected] to c/technology

189 comments fedilink hide all child comments

…according to a Twitter post by the Chief Informational Security Officer of Grand Canyon Education.

So, does anyone else find it odd that the file that caused everything CrowdStrike to freak out, C-00000291-
00000000-00000032.sys was 42KB of blank/null values, while the replacement file C-00000291-00000000-
00000.033.sys was 35KB and looked like a normal, if not obfuscated sys/.conf file?

Also, apparently CrowdStrike had at least 5 hours to work on the problem between the time it was discovered and the time it was fixed.

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[–] [email protected] 25 points 5 months ago (5 children)

have they ruled out any possibility of a man in the middle attack by a foreign actor?

[–] simplejack 62 points 5 months ago (1 children)

This was not a cyberattack.

https://www.crowdstrike.com/blog/statement-on-falcon-content-update-for-windows-hosts/

I guess they could be lying, but if they were lying, I don’t know if their argument of “we’re incompetent” is instilling more trust in them.

[–] [email protected] 30 points 5 months ago

"We are confident that only our engineers can fuck up so much, instead of our competitors"

[–] [email protected] 53 points 5 months ago

The CEO made a statement to the effect of "It's not an attack, it's just me and my company being shockingly incompetent." He didn't use exactly those words but that was the gist.

[–] db2 7 points 5 months ago

Or it being an intentional proof of concept

[–] [email protected] 5 points 5 months ago* (last edited 5 months ago)

In the middle of the download path of all the machines that got the update?

[–] [email protected] 4 points 5 months ago (1 children)

Foreign to who?

[–] [email protected] 25 points 5 months ago

"Foreign" in this context just means "not Crowdstrike", not like a foreign government.