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backdoor in upstream xz/liblzma leading to ssh server compromise
(www.openwall.com)
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this post was submitted on 29 Mar 2024
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The average user? Nothing. Mostly it just affects those who get the newest versions of everything.
In this case I think that's just Fedora and Debian Sid users or so.
The backdoor only activates during DEB or RPM builds, and was quickly discovered so only rolling release distros using either package format were affected.
Not regular Fedora, though, it was only in Fedora Rawhide and Fedora 41, so very very early, bleeding edge distributions. Nothing that a regular Fedora user would be using.
https://access.redhat.com/security/cve/cve-2024-3094
E: and Fedora 40 beta which some regular users could conceivably be using
https://www.redhat.com/en/blog/urgent-security-alert-fedora-41-and-rawhide-users
It mostly affects/targets the build systems of binary distros - infecting their build machines with this would result in complete compromise of released distro down the line.