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submitted 1 month ago* (last edited 1 month ago) by Kalcifer@sh.itjust.works to c/selfhosted@lemmy.world

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  1. https://sh.itjust.works/post/27913098
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[-] db0@lemmy.dbzer0.com 2 points 1 month ago

You don't get public traffic redirected. It's not how it works

[-] Kalcifer@sh.itjust.works 1 points 1 month ago* (last edited 1 month ago)

Yeah, that was poor wording on my part — what I mean to say is that there would be unvetted data flowing into my local network and being processed on a local machine. It may be overparanoia, but that feels like a privacy risk.

[-] db0@lemmy.dbzer0.com 1 points 1 month ago

I don't see how it's a privacy risk since you're not exposing your IP or anything. Likewise the images are already uploaded to your servers, so there's no extra privacy risk for the uploader.

[-] Kalcifer@sh.itjust.works 1 points 1 month ago

"Security risk" is probably a better term. That being said, a security risk can also infer a privacy risk.

[-] db0@lemmy.dbzer0.com 1 points 1 month ago

Why would it be a security risk?

[-] Kalcifer@sh.itjust.works 1 points 1 month ago

For clarity, I'm not claiming that it would, with any degree of certainty, lead to incurred damage, but the ability to upload unvetted content carries some degree of risk. For there to be no risk, fedi-safety/pictrs-safety would have to be guaranteed to be absolutely 100% free of any possible exploit, as well as the underlying OS (and maybe even the underlying hardware), which seems like an impossible claim to make, but perhaps I'm missing something important.

[-] db0@lemmy.dbzer0.com 1 points 1 month ago* (last edited 1 month ago)

You mean an exploit payload embedded in an image, and pwning a system parsing that image through python PIL? While there's never a 100% chance of anything, you're more likely to be struck by lightning than this coming to pass and at that point you're at more security risk at using the internet altogether.

[-] Kalcifer@sh.itjust.works 1 points 1 month ago

I will preface by saying that I am not casting doubt on your claim, I'm simply curious: What is the rationale behind why it would be so unlikely for such an exploit to occur? What rationale causes you to be so confident?

[-] db0@lemmy.dbzer0.com 2 points 1 month ago

Image processing libraries are used at the forefront of almost all web services, including lemmy and are extraordinarily robust. I really don't have the time to go at this in depth, but if you are familiar with this stuff you will know how extraordinary such an exploit would be and its existence would be causing massive chaos all over the world.

this post was submitted on 10 Nov 2024
83 points (97.7% liked)

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