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Today I'm grateful I'm using Linux - Global IT issues caused by Crowdstrike update causes BSOD on Windows
(www.timesnownews.com)
this post was submitted on 19 Jul 2024
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It's also a "don't allow third party proprietary shit into your kernel" issue. If the driver was open source it would actually go through a public code review and the issue would be more likely to get caught. Even if it did slip through people would publically have a fix by now with all the eyes on the code. It also wouldn't get pushed to everyone simultaneously under the control of a single company, it would get tested and packaged by distributions before making it to end users.
It's actually a "test things first and have a proper change control process" thing. Doesn't matter if it's open source, closed source scummy bullshit or even coded by God: you always test it first before hitting deploy.
And roll it out in a controlled fashion: 1% of machines, 10%, 25%...no issues? Do the rest.
How this didn't get caught by testing seems impossible to me.
The implementation/rollout strategy just seems bonkers. I feel bad for all of the field support guys who have had there next few weeks ruined, the sys admins who won't sleep for 3 days, and all of the innocent businesses that got roped into it.
A couple local shops are fucked this morning. Kinda shocked they'd be running crowd strike but also these aren't big businesses. They are probably using managed service providers who are now swamped and who know when they'll get back online.
One was a bakery. They couldn't sell all the bread they made this morning.
One shop I was at had a manual process going with cash only purchases.
That blew up when I ordered 3 things and the 'cashier' didn't know how to add them together. They didn't have calculator on Windows available🤣
I told them the total and change to give me, but lent them the calculator on my phone so they could verify for themselves 🤣
It's not that clear cut a problem. There seems to be two elements; the kernel driver had a memory safety bug; and a definitions file was deployed incorrectly, triggering the bug. The kernel driver definitely deserves a lot of scrutiny and static analysis should have told them this bug existed. The live updates are a bit different since this is a real-time response system. If malware starts actively exploiting a software vulnerability, they can't wait for distribution maintainers to package their mitigation - they have to be deployed ASAP. They certainly should roll-out definitions progressively and monitor for anything anomalous but it has to be quick or the malware could beat them to it.
This is more a code safety issue than CI/CD strategy. The bug was in the driver all along, but it had never been triggered before so it passed the tests and got rolled out to everyone. Critical code like this ought to be written in memory safe languages like Rust.