this post was submitted on 10 Jul 2023
3281 points (99.3% liked)

Lemmy.World Announcements

28382 readers
6 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 8) 50 comments
sorted by: hot top controversial new old
[โ€“] ReepusVanguard@lemmy.dbzer0.com 3 points 1 year ago (1 children)

My main is locked up and it sucks, i hope this all gets fixed.

load more comments (1 replies)
[โ€“] NausetJF@lemmy.world 3 points 1 year ago (1 children)

I appreciate the transparency. Hopefully with more eyes on the source code hacks like this will not happen again.

[โ€“] fenwickrysen@lemmy.world 3 points 1 year ago (1 children)

Just for a bit of perspective -- Scary hacks like this happen all the time in the for-profit corporate world, too. They just don't tell us about it. It will continue to happen as technology constantly grows and evolves.

Praise to the Admins and Devs who play this constant game of whack-a-mole!

load more comments (1 replies)
[โ€“] Simodeus@lemmy.world 3 points 1 year ago* (last edited 1 year ago) (1 children)

It seems that I lost all my subs. There were not many but still annoying.

E: Still subbed but can't see those in Voyager.

[โ€“] vampyre@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

I thought Iโ€™d lost mine too, and when I checked the community I wasnโ€™t subbed. I could still view my profile, comments and posts though.

I cleared the cache, then tried to post here and it said I was logged out (even though I could see all my activity except subs). I couldnโ€™t see any way to logout, so I edited my profile and re-entered my password then hit save. That seems to have fixed it, now I can post and my subs are back.

[โ€“] V4uban@lemmy.world 3 points 1 year ago

Thank you for your fast answer!

[โ€“] Molecular0079@lemmy.world 3 points 1 year ago

Thanks for the post-mortem and the quick fix! Glad you guys around to help battle test Lemmy's code.

[โ€“] TWeaK@lemm.ee 3 points 1 year ago (1 children)

Is a password change advised? How does the JWT cookie and exploit effect apps eg Jerboa?

load more comments (1 replies)
[โ€“] JohnDolt@lemmy.world 3 points 1 year ago

Good shit! Thanks for keeping things up and the pretty quick response as well.

[โ€“] sheetmysharts@lemmy.world 2 points 1 year ago

Thanks to everyone involved for the quick response ๐Ÿ‘

[โ€“] Noedel@lemmy.world 2 points 1 year ago (1 children)

Is this why I had to sign in and out of my account on liftoff?

I couldn't comment untill I did that. There may be others!

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

I lost some of my post history. Is there a data issue that's come from this? Why are my comments gone?

[โ€“] pgetsos@kbin.social 2 points 1 year ago (1 children)

If it is only recent post history, maybe it was purged along with many malicious comments/posts

[โ€“] mourkeer@lemmy.world 2 points 1 year ago

I know but this was over a week of comments lost.

[โ€“] chokidar@lemmy.world 2 points 1 year ago

Well done on acting on it so quickly. I think I did see some of the fake announcements you were referring too but were taken down very quickly. Keep up the good work team and thanks for everything you are doing!

[โ€“] gabriele97@lemmy.g97.top 2 points 1 year ago (1 children)

How are you preventing it to happen again until a patch is released from devs?

load more comments (1 replies)
[โ€“] weeahnn@lemmy.blahaj.zone 2 points 1 year ago (1 children)

is that why I can't log into my lemmy.world account?

[โ€“] weeahnn@lemmy.world 2 points 1 year ago

ok not a problem anymore. seems like I just had to clear my cache and it let me log in

[โ€“] Rooki@lemmy.world 2 points 1 year ago* (last edited 1 year ago) (1 children)

Is there a rough time range when it happened? and any news about other big instances like lemmy.ml? Are those safe? Currently they are not on the same version as lemmy.world.

load more comments (1 replies)
[โ€“] TrueStoryBob@lemmy.world 2 points 1 year ago

Thanks for keeping us up dated!

[โ€“] medvedev@lemmy.world 2 points 1 year ago

thanks to admin team for resolving that quickly

[โ€“] downpunxx@lemmy.world 2 points 1 year ago

******* This happened to me, one of my posts had it's photo deleted (I didn't delete it), then when I replaced it, the next time I checked the entire post had been deleted.

[โ€“] Nomadic@lemmy.world 2 points 1 year ago

Maybe there needs to be a quick rundown how to actually log out and in on clients, seems you can't with jerboa without just wiping the app, and wefwef, you need to delete all accounts.

I see some instances are throwing server errors

[โ€“] earthseedle@lemmy.world 2 points 1 year ago

Thanks for fixing it.

[โ€“] Tom2day@lemmy.world 2 points 1 year ago
load more comments
view more: โ€น prev next โ€บ