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Jellyfin critical security update - This is not a joke (github.com)

submitted 2 months ago by Mubelotix@jlai.lu to c/selfhosted@lemmy.world

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[–] chuso@fedia.io 5 points 2 months ago (1 children)

Yeah, the key seems to be in the comments from one of the changes: https://github.com/jellyfin/jellyfin/commit/0581cd661021752e5063e338c718f211c8929310#diff-bcc2125e56d5738b4778802ac650ca47719845aeee582f3b5c9b46af82ea9979R1176-R1180

It seems there was the potential risk that insufficient validation could allow reading arbitrary server files, which indeed poses a security risk.

However, my understanding is that this could be exploited only by authenticated users with permission to add new media. Not like that's a risk to ignore, but it's not like it could be exploited by anyone on the Internet.

[–] r00ty@kbin.life 3 points 2 months ago

However, my understanding is that this could be exploited only by authenticated users with permission to add new media. Not like that's a risk to ignore, but it's not like it could be exploited by anyone on the Internet.

I wonder if that's the reason for setting the default live TV management permission to false. Since that permission might well the the route to adding your own malicious m3u link for that second change.