this post was submitted on 31 Mar 2024
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No Stupid Questions

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My mastodon feed is full of IT security specialist talking about the xz affair where someone let a backdoor in some library.

But beside showing the two side of Free/Libre software (anybody can add a backdoor, and anybody can spot it), I have no idea how it impacts the average person. Is it a common library or something used only by specific application ? Would my home-grade router protects me ?

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[–] [email protected] 18 points 5 months ago (2 children)

only someone running arch or debian sid or an bleeding edge rolling release on an internet exposed ssh port. the idea of that configuration would sound ludicrous. even so we should be building off git repos not tar balls.

the weird part this situation has made me feel safer. the amount of work that went into social engineering this and it only lasted a month tops for people that run distros that would just not be or should not be used as an exposed server ever.

it shows open source works. This is more embarrassing than anything and we deserve it. We need to pay core library devs and have a mechanism that core libraries can be handed off to a trusted org.while another upstream maintainer can be found or the project shut down and other projects move away from the un maintained project. When the person maintaining the project gets burned out or has other issues.

[–] [email protected] 2 points 5 months ago (1 children)

why does everyone keep mentioning arch?

[–] [email protected] 4 points 5 months ago (1 children)

Because Arch was one of the distros that distributed the backdoored xz package, though they claim no vulnerability to due to their implementation.

[–] [email protected] 1 points 5 months ago (1 children)

so.... they didn't distribute the backdoored package did they?

[–] [email protected] 10 points 5 months ago (1 children)

From the archlinux.org news post on the issue.

Arch does not directly link openssh to liblzma, and thus this attack vector is not possible.

[–] [email protected] 2 points 5 months ago

oh 100% i was just taking in general of upstream bleeding edge distro being vulnerable to this kind of upstream attack not specific to xz