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An angry admin shares the CrowdStrike outage experience (www.theregister.com)

submitted 3 months ago by [email protected] to c/[email protected]

108 comments fedilink hide all child comments

IT administrators are struggling to deal with the ongoing fallout from the faulty CrowdStrike update. One spoke to The Register to share what it is like at the coalface.

Speaking on condition of anonymity, the administrator, who is responsible for a fleet of devices, many of which are used within warehouses, told us: "It is very disturbing that a single AV update can take down more machines than a global denial of service attack. I know some businesses that have hundreds of machines down. For me, it was about 25 percent of our PCs and 10 percent of servers."

He isn't alone. An administrator on Reddit said 40 percent of servers were affected, along with 70 percent of client computers stuck in a bootloop, or approximately 1,000 endpoints.

Sadly, for our administrator, things are less than ideal.

Another Redditor posted: "They sent us a patch but it required we boot into safe mode.

"We can't boot into safe mode because our BitLocker keys are stored inside of a service that we can't login to because our AD is down.

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[–] [email protected] 3 points 3 months ago (2 children)

Can you explain what is immutable/atomic distribution and how it can prevent this?

[–] [email protected] 5 points 3 months ago

An immutable distribution is one that treats the system files as read-only. Applications are handled separately, and updates to the system are done in an image-based way, rather than changing a few updated files, basically the OS gets replaced with an updated version. It prevents users or malicious outsiders from just changing system files. Fedora Silverblue and SteamOS as found on Valve's Steam Deck are examples of immutable distros.

Now, with soemthing like Crowdstrike that operates in kernel space...I'm too far outside my wheelhouse to grasp how that would work on an immutable system. How it would be implemented.

[–] [email protected] 1 points 3 months ago

My thought was mostly that this kind of invasive third party and closed source kernel module security wouldn't have been necessary. But I'm pretty sure rollbacks can include kernel changes in a previous image.