this post was submitted on 10 Jul 2023
3273 points (99.3% liked)

Lemmy.World Announcements

30174 readers
60 users here now

This Community is intended for posts about the Lemmy.world server by the admins.

Follow us for server news ๐Ÿ˜

Outages ๐Ÿ”ฅ

https://status.lemmy.world/

For support with issues at Lemmy.world, go to the Lemmy.world Support community.

Support e-mail

Any support requests are best sent to info@lemmy.world e-mail.

Report contact

Donations ๐Ÿ’—

If you would like to make a donation to support the cost of running this platform, please do so at the following donation URLs.

If you can, please use / switch to Ko-Fi, it has the lowest fees for us

Ko-Fi (Donate)

Bunq (Donate)

Open Collective backers and sponsors

Patreon

Join the team

founded 2 years ago
MODERATORS
 

While I was asleep, apparently the site was hacked. Luckily, (big) part of the lemmy.world team is in US, and some early birds in EU also helped mitigate this.

As I am told, this was the issue:

  • There is an vulnerability which was exploited
  • Several people had their JWT cookies leaked, including at least one admin
  • Attackers started changing site settings and posting fake announcements etc

Our mitigations:

  • We removed the vulnerability
  • Deleted all comments and private messages that contained the exploit
  • Rotated JWT secret which invalidated all existing cookies

The vulnerability will be fixed by the Lemmy devs.

Details of the vulnerability are here

Many thanks for all that helped, and sorry for any inconvenience caused!

Update While we believe the admins accounts were what they were after, it could be that other users accounts were compromised. Your cookie could have been 'stolen' and the hacker could have had access to your account, creating posts and comments under your name, and accessing/changing your settings (which shows your e-mail).

For this, you would have had to be using lemmy.world at that time, and load a page that had the vulnerability in it.

(page 4) 50 comments
sorted by: hot top controversial new old
[โ€“] 00Xero00@lemmy.world 9 points 2 years ago* (last edited 2 years ago) (2 children)

I can't log into my account anymore, this one is a new one I've just made. I tried to reset my password but nothing came in the mailbox. I can still see comments and posts from that account though.

It's this one:

And I don't know why but I can't save the profile pic for this account.

Edit: Nvm, I use another email to sign up for Lemmy and forgot about it

load more comments (2 replies)
[โ€“] Macaroni_ninja@lemmy.world 9 points 2 years ago

As someone in EU I didn't even realized there was an issue. Well done and great reaction time! Also thank you for the transparency ๐Ÿ‘‘

Rock on, Rudd.

[โ€“] godless@lemmy.world 8 points 2 years ago (2 children)

With the JWT secret rotation, shouldn't everyone be forced to re-login? I'm posting with my existing session without any changes.

load more comments (2 replies)
[โ€“] dorumon@lemmy.world 8 points 2 years ago (1 children)

Well that's just great it really is a shame though how some people would actively want to ruin something free like this just because they can.

load more comments (1 replies)
[โ€“] iMike@lemmy.world 8 points 2 years ago

Must have been jealous spez

[โ€“] LeHappStick@lemmy.world 8 points 2 years ago (11 children)

Pardon the ignorance, but how do I know if I was compromised? what do?

load more comments (11 replies)
[โ€“] adamlc@lemmy.world 6 points 2 years ago (1 children)

Thanks all working again. Had to clear my browser cache in order to login again and had to resign in to memmy too.

I guess its early days for lemmy for incidents like this, fingers crossed something like this doesn't happen again :)

load more comments (1 replies)
[โ€“] Reliant1087@lemmy.world 6 points 2 years ago

Thank you for taking the time to update this :) Hope everything will be sorted out without people being scared. As a layman, was any user data compromised?

[โ€“] xylogx@lemmy.world 6 points 2 years ago (2 children)

I noticed this morning for a small amount of my posts with pictures, maybe 5-10%, the pictures were deleted or missing. Not sure if this is related to the incident.

load more comments (2 replies)
[โ€“] TheVampireSaga@lemmy.world 6 points 2 years ago* (last edited 2 years ago)

Here's a relevant post that talked about this with @AlmightySnoo@lemmy.world I think is worth looking into for anyone curious what exactly happened.

https://sh.itjust.works/post/923025

please don't visit the legal section of the website or anything confirmed compromised if anything.

[โ€“] debeluhar@lemmy.world 6 points 2 years ago (1 children)

I wasn't using webpage, I was only using mobile app (Connect). Could my coockie be also stolen that way or was that only possible on webpage?

load more comments (1 replies)
load more comments
view more: โ€น prev next โ€บ