this post was submitted on 04 Feb 2024
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they didnt explain how the exploit work or howto know if your system is vulnerable
Easiest answer:
If it upgrades some stuff, you were vulnerable, but you no longer are. If nothing upgrades, then you were already all good.
If you're doing that regularly, then your core system will generally be patched fixing almost all exploits in your core system, including this one. If not, you're vulnerable to this exploit and likely a whole bunch more stuff.
Edit: That's the simplest answer but if you're curious you can do a double-check for this particular vulnerability with
apt changelog libc6- generally speaking you won't see recent changes, but if a package has been recently updated you'll see a recent fix. So e.g. for this, I see the top change in the changelog is the fix from a couple weeks back:If you are running
aptthen you are running debian or ubuntu which the article clearly states they are vulnerable. but anyway I was asking how do I figure it out by myselfAll Linux systems will be very likely vulnerable to this if they're not they're patched with the fix. Patched systems will not be vulnerable. That's true for Debian and Ubuntu, as it is for any Linux system. The commands I gave are determining whether or not you're patched, on a Debian or Ubuntu system.
What distro are you running? I can give you commands like that for any Linux system to determine whether or not you're patched.
am running Gentoo with systemd. does a bug in syslog affect me?
I don't see why it wouldn't. I think for gentoo, you want to check if you need any security updates with:
(Edit: Also, as a general rule -- don't type stuff as root just because I or some other random person on the internet tells you to; check the man page or docs to make sure it's going to do something that you want it to do first.)
Thank you!