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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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It seems like a RCE, rather an auth bypass once though. https://bsky.app/profile/filippo.abyssdomain.expert/post/3kowjkx2njy2b
Maybe not. But it does mean that you can write a crawler that slams the door shut for the attacker on any vulnerable systems.
EDIT: Oh, maybe he just means that it reverts for that single invocation.