https://boehs.org/node/everything-i-know-about-the-xz-backdoor
I have begun a post explaining this situation in a more detailed writeup. This is updating in realtime, and there is a lot still missing.
Does everyone understand how much luck was involved in this exploit in #xz being discovered so quickly? And, what it tells us about the attacker?
This was a subtle and sophisticated attack implemented over _years_. The attacker was made a co-maintainer two years ago, and they made numerous innocuous-looking and seemingly unrelated changes over that time, sometimes through a second account, that eventually added up to a backdoor. Along with many innocent commits, too. #Linux
More thoughts on #xz: it seems that the bootstrap code for the backdoor was hiding in difficult-to-understand code. I hope this prompts people to start taking code readability seriously as a security factor.
It's much harder to hide malicious code in code that's easy to understand.
About the #xz backdoor: please do *not* assume that if your SSH server is not affected, you are not affected by it at all.
A lot about this situation is still unclear, but what *is* clear is that this wasn't a drive-by attack - this was clearly a well-prepared long-term engagement, across many commits and messages by potentially multiple accounts.
That makes it very plausible that there are other backdoors that haven't been found yet, and that might affect you under different circumstances.
There's not much you can concretely do about that yet, but you should carefully watch developments around this situation.
nixos users: tracking issue for the xz exploit rollback is https://github.com/NixOS/nixpkgs/pull/300028
I could take a "LMAO TOLD YOU SO" approach here but really I'm just sad. I really did enjoy working on the github CLI and the copilot feature violated all the values I tried to bring to that project. It's also a great object lesson in the downfall of GH culture under MSFT.
I guess the "copilot for github cli" launched. i can't bring myself to look at it but friends tell me it's as unreliable as i predicted.
this is the feature i quit over. i wasn't thrilled in general with working at GH at that point but being told i had no choice but to accept/support shoving copilot into the GitHub CLI is the actual event that pushed me out.
I gave plenty of warning that that was my line in the sand and they crossed it.
"it is a mistake to rush to impose the individual ethical responsibility that the corporate structure deflects. this is the temptation of the ethical which, as žižek has argued, the capitalist system is using in order to protect itself in the wake of the credit crisis — the blame will be put on supposedly pathological individuals, those "abusing the system", rather than on the system itself."
— mark fisher, "capitalist realism: is there no alternative?"
Little roundup of the news around the ‘xz’ supply chain compromise that I have seen so far;
https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users
https://lists.debian.org/debian-security-announce/2024/msg00057.html
https://www.openwall.com/lists/oss-security/2024/03/29/4
This is unlikely to impact people who run stable or LTS versions of Linux distributions, but if you are on Fedora 41 or Rawhide, for example, it's worth checking for updates.
Same goes for Debian testing, and unstable.
xz-utils was backdoored by its upstream. Tracked as CVE-2024-3094 and thoroughly documented by vuln discoverer Andres Freund on oss-security@: https://www.openwall.com/lists/oss-security/2024/03/29/4
Got routed over a footpath thrice and through a closed dike path once, also for some fucking reason it made me go *around* a perfectly serviceable street
Technical debt collector and general hype-hater. Early 30s, non-binary, ND, poly, relationship anarchist, generally queer.
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Strong views about abolishing oppression, hierarchy, agency, and self-governance - but I also trust people by default and give them room to grow, unless they give me reason not to. That all also applies to technology and how it's built.