Do you host anything on your network to tne internet that allows anyone ssh access to your computers? More simply do you have port 22 open on your router or firewall? If you don't or said no, then don't worry about it.
this post was submitted on 08 Apr 2024
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ssh was installed because it's needed by one of the GNOME's components (the keyring I think). ssdh was disabled the last time I looked at it though. But my router highly unfortunately uses stock proprietary firmware because I couldn't get OpenWRT working on it. That thing can have all the ports opened lol
You switched distros because of this? 😆
Yes
Well, live and learn :)
It's over. Nothing to see here. Move along.
When i first heard of xz backdoor, i updated my arch system and the xz-utils package to 5.6.1-3 which in the version numbers seems to be a patch, and it seems to be, so think you're safe from now
The back door was crafted to be used by a very specific encryption key. You are are vulnerable if the attackers are specifically targeting you. If you are a tangent of a nation, you should be worried:)
Well idk what "a tangent of a nation" means but I have political opinions very different to what my nation wants me to have so it might actually be a problem for me
I mean, appears a country is responsible for the attack after 2 years of preparation. If they don't like you, probably was easy to send someone knock your door instead. Relax :)
What they mean is if you are a affiliated with a national government. You might also be a target if you are very very rich.
If you're an average Joe, they probably won't burn it on you.
He could be an average Joe who works in the IT department of a company a national government would be interested in.
It's already burned by being discovered.
And, never underestimate the utility of a large botnet.
TL;DR: starting with 5.6.1-2, XZ is safe on Arch. Safe as in not affected by this particular vulnerability.
And here: https://security.archlinux.org/ASA-202403-1
5.6.1-2 is where the package switched from building from the tarball (backdoored) to the upstream git repo (clean). The tarball release contained some extra build instructions (which didn't exist in the git repo) that added the backdoor during the build process. The issue arose from the downstream maintainers' assumption that the contents of the tarball and the git repo were identical.
Subsequent changes, and 5.6.1-3, were mostly administrative, like changing the git repository's URL (since the maintainer's github account was banned) and locking out Jia Tan's PGP key.
an article which said that in 5.6.1-3 the backdoor was “fixed” by just not letting the malware part communicating with the vulnerable ssh related stuff
That article is bullshit, don't believe a thing it says. Arch was not affected by the SSH vulnerability because the sshd binary did not link liblzma where the backdoor existed, so they could never communicate in a way that could be exploited by this particular vulnerability. It was not part of the fix.
5.6.1-2 is where the package switched from building from the tarball (backdoored) to the upstream git repo (clean)
This is what I was looking for. Though if 5.6.1-2 doesn't contain the backdoor, why is it listed as the last version that does contain it everywhere?
why is it listed as the last version that does contain it everywhere?
I don't know, but the official advisory is most likely to be correct. Everything else is a game of Chinese whispers where the information becomes less reliable the more it is passed on. Maybe it's because -2 still had Jia Tan's signing key, and could have, theoretically, accepted commits signed by them.
Where is it listed as such? Can you give examples?
Hmm I looked it up and I'm either searching it wrong or it seems like the articles were edited and the stuff about 5.6.1-2 being infected is deleted. I think you're right about the keys. That could be the reason for yellow press to exaggerate the problem
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