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backdoor in upstream xz/liblzma leading to ssh server compromise
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this post was submitted on 29 Mar 2024
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If you're using
xzversion 5.6.0 or 5.6.1, please upgrade asap, especially if you're using a rolling-release distro like Arch or its derivatives. Arch has rolled out the patched version a few hours ago.Backdoor only gets inserted when building RPM or DEB. So while updating frequently is a good idea, it won't change anything for Arch users today.
Archlinux's XZ was compromised as well.
News post
Git change for not using tarballs from source
No, read the link you posted:
I think that was a precaution. The malicious build script ran during the build, but the backdoor itself was most likely not included in the resuling package as it checked for specific packaging systems.
https://www.openwall.com/lists/oss-security/2024/03/29/22