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Check if you need to update all your stuff - again. (sshhole.com)
submitted 19 hours ago* (last edited 17 hours ago) by to c/selfhosted@lemmy.world
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are you affected?

  • is your sshd running on musl? (alpine, openwrt, buildroot, yocto)
  • is it not using pam? alpine's openssh-server doesn't by default, or maybe you set UsePAM no
  • are password logins still on? they are by default
  • is there an account with just * as its password? key-only users, ldap users, root on alpine
  • and some other account with a real password?
  • then that * account takes any password between 257 and 1024 characters

on alpine's official aws and azure images that's the default alpine user, and it has passwordless doas. so it's root

on debian, ubuntu, fedora or anything else with glibc? going through pam? dropbear? openbsd? you're fine

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[–] 7 points 17 hours ago (4 children)

It's not quite as simple as that. The author in this case followed a pretty specific trail to find the bug.

Where AI helped was as the last step. They already knew what the bug would do and where to look, but actually looking through the source code for all the possible musl implementations out there would have taken a lot of time.

So they brute-forced it instead and asked AI to spin up actual running instances of all those implementations and simply tried the bug against each of them, rather than looking at all the code.

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  • [–] 3 points 17 hours ago* (3 children)

    Fair enough, but the overall idea stands:

    The bar has been significantly lowered for what it takes to hack.

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  • [–] 4 points 17 hours ago* (2 children)

    That's because it turns out there are tons of vulnerabilities out there introduced by very lazy and/or dumb code.

    It isn't that AI has lowered the bar for hacking, it's that it's showing us just how much bad code is out there. The bar was already on the ground, we just didn't know it.

    After all is said and done AI will actually end up raising the bar for security everywhere.

    Unfortunately we have a lot of legacy crap to clean first.

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  • [–] -2 points 16 hours ago (1 child)

    You're doing mental gymnastics to argue with me. Let's try what I said worded differently in a way that hopefully helps you realize we agree:

    It is now easier to hack.

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  • [–] 1 point 56 minutes ago

    Ah I agree it's easier to hack. What I don't agree with is the notion that it enables a class of people that couldn't hack before. It's easier to hack, yes, but for the same people who were hacking before.

    Ignorant people trying to use ready-made tools for hacking isn't a new thing, it goes back a while, there's even a term for it (script kiddies).

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