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Arch with XZ (lemmy.world)
submitted 7 months ago by qwioeue@lemmy.world to c/linuxmemes@lemmy.world
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[-] Rustmilian@lemmy.world 32 points 7 months ago

Arch does not directly link openssh to liblzma, and thus this attack vector is not possible. You can confirm this by issuing the following command:

ldd "$(command -v sshd)"
[-] qwioeue@lemmy.world 7 points 7 months ago* (last edited 7 months ago)

Yes, this sshd attack vector isn't possible. However, they haven't decomposed the exploit and we don't know the extent of the attack. The reporter of the issue just scratched the surface. If you are using Arch, you should run pacman right now to downgrade.

[-] Fubarberry@sopuli.xyz 36 points 7 months ago

They actually have an upgrade fix for it, at least for the known parts of it. Doing a standard system upgrade will replace the xz package with one with the known backdoor removed.

[-] HopFlop@discuss.tchncs.de 15 points 7 months ago

If you are using Arch, you should run pacman right now to downgrade.

No, just update. It's already fixed. Thats the point of rolling release.

[-] Trail@lemmy.world 4 points 7 months ago

Bold of you to assume I hare upgraded in the first place.

[-] lemmyvore@feddit.nl 3 points 7 months ago

I switched it with 5.4, just in case.

[-] bitwolf@lemmy.one 0 points 7 months ago

Do not use ldd on untrusted binaries.

I executed the backdoor the other day when assessing the damage.

objdump is the better tool to use in this case.

this post was submitted on 30 Mar 2024
471 points (84.2% liked)

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