210

cross-posted from: https://lemmy.ml/post/1895271

FYI!!! In case you start getting re-directed to porn sites.

Maybe the admin got hacked?


edit: lemmy.blahaj.zone has also been hacked. beehaw.org is also down, possibly intentionally by their admins until the issue is fixed.

Post discussing the point of vulnerability: https://lemmy.ml/post/1896249

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[-] LillianVS@lemmy.world 30 points 1 year ago* (last edited 1 year ago)

Some information I have posted to Lemmy.World:

I am not a super code-literate person so bare with me on this... But. Still please becareful. There appears to be a vulnerability.

Users are posting images like the following:

https://imgur.com/a/RS4iAeI

And inside hidden is JavaScript code that when executed can take cookie information and send it to a URL address.

Among other things. At this time if you see an image please click the icon circled before clicking the link. DO NOT CLICK THE IMAGE. If you see anything suspicious, please report it immediately. It is better a false report than a missed one.

I have seen multiple posts by these people during the attack. It is most certainly related to JS.

[-] erre@feddit.win 9 points 1 year ago* (last edited 1 year ago)

If it's onload then simply viewing the image runs that script. Yikes.

[-] LillianVS@lemmy.world 6 points 1 year ago

That's even worse, if Lemmy has a vulnerability like that it needs to get fixed ASAP... Also if that code actually works, I am going to have to secure my account.

[-] erre@feddit.win 9 points 1 year ago* (last edited 1 year ago)

I'd wager you're likely fine if you're using a mobile app when the affected image loads. Also, it appears they're stealing auth tokens.. not passwords or anything. At worst they could impersonate you until your token expires.. but you're not a high value target unless you're an admin of an instance.

[-] LillianVS@lemmy.world 6 points 1 year ago

I used Firefox... So I definitely reset my password. Thing is I do not see an option for Lemmy where you can "sign out everywhere" which is the counter to Auth token stealing.

So I had to change it so that the Auth token would expire. Whilst I am not an admin I won't take the chance. It could compromise other users and I do not want to take that risk.

[-] deweydecibel@lemmy.world 3 points 1 year ago

Apparently the fix for the vulnerability signs everyone out.

[-] TheFrirish@jlai.lu 3 points 1 year ago

lmao I'm so stupid I pressed on that image and now my account is compromised. oh well it forced to create another and this is my first hack yayyyyy!

[-] LillianVS@lemmy.world 5 points 1 year ago

Clicking the image isn't the issue, scrolling by it will nab your Auth tokens. Resetting your password will reset the Auth tokens protecting your account. A sign out everywhere button would fix it but that isn't an option yet. It really needs to be.

[-] Fal@yiffit.net 2 points 1 year ago

There's so many things wrong with this I don't even know where to start

[-] Hairypooper@lemmy.world -4 points 1 year ago

Wtf how is this even possible? Are the Lemmy devs smoking crack? If you're going to run a reddit alternative, it may be wise to sanitize the fuck out of everything posted on there.

[-] r00ty@kbin.life 6 points 1 year ago

Please feel free to perform a full security audit.

[-] lowleveldata@programming.dev 4 points 1 year ago
[-] waltuh@feddit.uk 2 points 1 year ago

Not really helpful though is it? It's like going to a friend's house and asking why there is a sink hole in the middle of the floor that everyone is walking around, and they say "feel free get a hammer out".

[-] PupBiru@kbin.social 3 points 1 year ago

the threadiverse wasn’t exactly popular until the reddit exodus

id probably flip it: are lemmy users smoking crack? if you’re going to run to a reddit alternative, it’d be wise not to choose alpha software!

[-] jherazob@kbin.social 2 points 1 year ago* (last edited 1 year ago)

Little Bobby Tables strikes again

Now seriously, people forget that Lemmy is alpha software, and Kbin is even younger

[-] girl@lemm.ee 2 points 1 year ago

well Reddit was hacked so lemmy is still on track

[-] Dio@kbin.social 1 points 1 year ago

¯_(ツ)_/¯ Lemmy.

this post was submitted on 10 Jul 2023
210 points (99.1% liked)

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