On Tue, 2019-08-20 at 08:33 +0200, Oliver Jaksch via arch-general wrote:
> I let rkhunter running around once a week. There were nothing since many
> months. But today it's report complains about */lib64/libkeyutils.so.1.9* and
> therefore other tools they're (seems to be) using this SO.
>
> The SO matches the one from 'core/keyutils 1.6.1-1' in size and hash.
> I've uploaded the SO to some "we scan it all" AV sites, but none of them found
> anything.
>
> Should I/we be worried? Anything else I can do? Or is this a false alarm and
> the warnings are somewhat okay because of the package's nature ("Linux Key
> Management Utilities")?
>
>
> > Warning: Checking for possible rootkit files and directories [ Warning ]
> > Found file '/lib/libkeyutils.so.1.9'. Possible rootkit: Sniffer component
> > Found file '/lib64/libkeyutils.so.1.9'. Possible rootkit: Sniffer component
> > Found file '/usr/lib/libkeyutils.so.1.9'. Possible rootkit: Sniffer
> component
> > Found file '/usr/lib64/libkeyutils.so.1.9'. Possible
> > rootkit: Sniffer component
> >
> > Warning: The following processes are using suspicious files:
> > Command: (sd-pam)
> > UID: 1001 PID: 944
> > Pathname:
> > Possible Rootkit: Spam tool component
> > Command: NetworkManager
> > UID: 0 PID: 381
> > Pathname:
> > Possible Rootkit: Spam tool component
> > Command: NetworkManager
> > UID: 385 PID: 381
> > Pathname: 3166425
> > Possible Rootkit: Spam tool component
> > Command: NetworkManager
> > UID: 387 PID: 381
> > Pathname: 3166425
> > Possible Rootkit: Spam tool component
> > Command: Xorg
> > UID: 0 PID: 512
> > Pathname:
> > Possible Rootkit: Spam tool component
> > [...]
No, those libraries are used for key manipulation, that's why rkhunter
thinks that they might be sniffer.
If you are worried you can check the sources.
https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/keyutils
Filipe Laíns
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