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You might want to stop running atop

rachelbythebay.com

11–20 of 155 posts

Re: You might want to stop running atop

#12
post #11

This screams NDA/disclosure but things are so mega super fucked that they feel obligated to pre warn as early as possible. I wonder how long/old the problem is in atop?

Seems like the latest version might be as old as July 2024?

https://www.atoptool.nl/allnews.php

For anyone interested, here are the latest commits to the GitHub: https://github.com/Atoptool/atop/commits/master/

Re: You might want to stop running atop

#14
post #7

Earlier quoted context omitted.

I'll go with number 3. She didn't just say "don't run", she said "uninstall". That doesn't sound like "misleading" or "uses too much resources". It sounds very CVE-ish.

Another xz case?

Does atop have any legitimate need to connect to the network? I can’t think of any legitimate accidental security holes that might show up in something like atop, but then, these utilities often have funky features I don’t know about!

Re: You might want to stop running atop

#16
post #12
post #11

This screams NDA/disclosure but things are so mega super fucked that they feel obligated to pre warn as early as possible. I wonder how long/old the problem is in atop?

Seems like the latest version might be as old as July 2024? https://www.atoptool.nl/allnews.php For anyone interested, here are the latest commits to the GitHub: https://github.com/Atoptool/atop/commits/master/

I have this weird gut feeling that it's going to be one of those "this was introduced in 2010 commit and has been in every build since"

Edit: I have no knowledge of what this is FYI.

Re: You might want to stop running atop

#17
post #11

This screams NDA/disclosure but things are so mega super fucked that they feel obligated to pre warn as early as possible. I wonder how long/old the problem is in atop?

Yeah, from a rando this would be just bad vagueposting but Rachel is absolutely someone who could know about a very good reason why we should uninstall atop but be unable to legally say why. I would heed her warning.

Re: You might want to stop running atop

#18
post #7

Earlier quoted context omitted.

I'll go with number 3. She didn't just say "don't run", she said "uninstall". That doesn't sound like "misleading" or "uses too much resources". It sounds very CVE-ish.

Another xz case?

That's what it smells like but this is still a weird way to disclose something like that. I imagine some people with free afternoons are taking a stab at auditing atop's PR history right now. I'm not personally up to the task, but the fact that the top 3 contributors other than the original author are ByteDance employees might cause some to jump to conclusions.

Re: You might want to stop running atop

#20
There's a lot of speculation about why, with the answer almost certainly security / exploitable (or backdoor), and I'll just throw an extra little tidbit in:

atop seems to run persistently as root, which may be the reason for preventing it from running/uninstalling.

the netatop part of atop installs a persistent kernel module, netatop.ko, as part of its installation. The module hooks netfilter to be able to monitor all traffic.

If there's an exploitable flaw in the kernel module, this would be a max-severity CVE.

netatop _also_ runs a persistent daemon, netatopd, which I believe from inspecting the source runs as root.

The article's language about uninstalling it kinda sorta makes you think one of these three parts is in some way exploitable or backdoored -- any which way it's a privileged process, and one that's monitoring network traffic.

(I'm not sure if netatop is installed by default on systems when you install atop, per czk's comment below)

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