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
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:
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.
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.
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”.
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!
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.
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.
