this post was submitted on 30 Mar 2024
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    [–] [email protected] 91 points 9 months ago (11 children)

    I thought Arch was the only rolling distro that doesn't have the backdoor. Its sshd is not linked with liblzma, and even if it were, they compile xz directly from git so they wouldn't have gotten the backdoor anyway.

    [–] qwioeue 21 points 9 months ago* (last edited 9 months ago) (7 children)

    liblzma is the problem. sshd is just the first thing they found that it is attacking. liblzma is used by firefox and many other critical packages.

    [–] Rustmilian 32 points 9 months ago (6 children)

    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 7 points 9 months ago* (last edited 9 months ago) (4 children)

    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.

    [–] [email protected] 36 points 9 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.

    [–] [email protected] 15 points 9 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 4 points 9 months ago

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

    [–] [email protected] 3 points 9 months ago

    I switched it with 5.4, just in case.

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