• 19 Posts
  • 476 Comments
Joined 2 years ago
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Cake day: August 10th, 2023

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  • design around ease of self-hosting. A non technical user must be able to self host easily and at a very low cost.

    This may be a controversial opinion, but I actually like the way that hosting a lemmy instance is somewhat difficult to spin up. I like the way that it is requires a time investment and spammers can’t simply spin up across different domain names. I like the way that problematic instances get defederated and spammers or other problematic individuals can’t simply move domain names due to the way activitypub is tied to those.

    In theory, you could set up something like digitalocean’s droplets, where a user does one click to deploy an app like nextcloud or whatever. But I’m not really eager to see something like that.

    Transferable user identity (between instances)

    I dislike this for a similar reason, tbh. If someone gets banned, they should have to start over. Not get to instantly recreate and refederate all their content from a different instance.

    Of course, ban evasion is always a thing. But what I like is that spammers or problematic individuals who had their content nuked are forced to start from scratch and spend time recreating it before they get banned again.

    As for what I would really like to see, I would really love features that make lemmy work as a more powerful help forum. Like, on discourse if you make a post, it automatically searches for similar posts and shows them to you in order to avoid duplicate posts. Lemmy does something similar, but it appears to only be the title. It would also be cool to automatically show relevant wiki pages, or FAQ content, since one of the problems on reddit was that people wouldn’t read the wiki or FAQ of help forums.

    I would also like the ability to mark a comment on a post as an “answer”, or something similar. I think stackoverflows model definitely had lots of issues with mods incorrectly marking things as duplicate, but I think it was a noble goal to try to ensure that questions were only asked once, and for them to accumulate into a repository of knowledge. For the all the complaints about it, stackoverflow is undeniably the one of the biggest and most useful repositories of knowledge.







  • This may sound kind of weird, but do you really need a communication platform for a LUG?

    Our local LUG uses meetup and a website for advertising and telling people when we meet (once every two weeks at the same spot). (Okay I guess the one time our spot was closed and we had to track down people’s phone numbers to inform them of the new spot wasn’t that fun).

    Anyway, we have a mailing list, an irc, and a matrix chat bridged to the irc, but they are effectively dead and no one uses them. The lack of activity on them makes me wonder if you really need to have a chatroom to run a LUG. We seem to get by just fine, for the most part.






  • I’ve heard of thumbnails being used to deliver malware.

    You’ve heard of critical vulnerabilities in media processing applications that mean that thumbnails can theoretically be used to be spread malware. That is not the same as “this issue was being actively exploited in the wild and used to spread malware before it was found and patched”.

    These vulnerabilities, (again, cost money), and are fixed rapidly when found. Yes, disabling thumbnails is more secure. But I am of the belief that average users should not worry about any form of costly zero day in their threat model, because they don’t have sensitive information on their computers that makes them a target.


  • less distro-dependent like a privilege escalation attack

    These also are valuable. Less valuable than browser escapes IMO though.

    A keylogger is more likely, and it’s just as possible with sudo as it is with run0. They would replace sudo, run0, doas, etc with a fake command (since that only require access to the user), that either keylogs, or inserts a backdoor while it does the other sudo things.

    I’ve heard a fair few times about thumbnailer attacks, but no real detail from KDE about what if any mitigations they have in place.

    Please ignore the entire cybersecurity hype news cycle about images being used to spread malware. They often like to intentionally muddy the waters, and not clearly explain the difference between a malformed file being used as a vulnerability to exploit a code execution exploit, and an image file being used as a container for a payload (steganography). The former is a big deal, the latter is a non issue because the image is not the issue, whatever means the malware actually used to get onto the systems is.

    Here’s a recent example of me calling this BS out. The clickbait title implies that users got pwned by viewing a malicious image, when in actually it was a malicious extension that did the bad things.

    Unless you are using windows media player, the microsoft office suite, or adobe acrobat, code execution from loading a media file is a really big deal and fixed extremely quickly. Just stay updated to dodge these kind of issues.

    As for zero days, unknown and unpatched vulnerabilities, again, that’s a different threat model because those exploits cost money to execute. Using an existing known (but fixed in updated versions of apps) is free.


  • If I uninstall sudo and switch to run0 (

    Sudo and run0 are both problematic. Sudo is a setuid binary, which is problematic, but run0 is not much better. It works by making calls to systemd/polkit/dbus, services that constantly run as root, and they themselves expose a massive attack surface. Many privilege escalation CVE’s similar to sudo have been released that exploit that attack surface.

    When it comes to actually being secure, systemd somewhat screws you over, due to having a massive attack surface, a way to run things as root, and the interesting decision to have polkit parse and run javascript in order to handle authorization logic (parsing is a nightmare to do securely).

    The other thing, is that the browser sandbox is much, much stronger than the separation of privileges between users in Linux. Browser sandbox escapes (because they work the same on windows or Linux) are worth immense amounts of cash, and are the kinds of exploits that are used in targeted manners against people who have information on their computer worth that much. If you don’t have information worth millions of dollars on your computer, you shouldn’t worry about browser sandbox escape exploits.

    The reality is that any attacker who is willing and able to pierce through a browser sandbox, will probably also have a Linux privilege escalation vulnerability on hand. In my opinion, trying to add more layers to security is pointless unless you are adding stronger layers. If your attacker has a stronger “spear”, it doesn’t matter how many weak “shields” you try to put in front to stop it.

    If the million dollar industry of browser escapes is in your threat model, I recommend checking out the way that Openbsd’s sandboxing interacts with chromium. Or check out google’s gvisor sandbox and see if you can run a browser in there.






  • Not really? From this page, all it looks like you need is a salsa.debian.org account. They call this being a “Debian developer”, but registration on Debian Salsa is open to anybody, and you can just sign up.

    Once you have an account, you can use Debian’s Debusine normally. I don’t really see how this is any different from being required to create an Ubuntu/Launchpad account for a PPA. This is really just pedantic terminology, Debian considers anybody who contributes to their distro in any way to be a “Debian Developer”, whereas Ubuntu doesn’t.

    If you don’t want to create an account, you can self host debusine — except it looks like you can’t self host the server that powers PPA’s. I consider this to be a win for Debusine.