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Re: Nightmares and ciritval security issue with new LTSP



[ Dominik George, 2021-09-07 ]
> > Most probably forgotten to exclude. There's a list of excludes 
> > (/etc/ltsp/image-local.excludes) prepended by a FIXME.
> 
> This file is empty, both on the upgraded and on the freshly installed
> combined server.

Yes, after building the related image for the use case, this file is 
removed (and touched for possible further usage).

> > > I installed a fresh Debian Edu 11 combined server in a test
> > > environment and can reproduce that issue, meaning that in my opinion,
> > > Debian Edu 11 **must not be used with LTSP in a production
> > > environment** without taking very much care to mitigate this issue.
> > 
> > ATM I don't have a test environment. Feel free to fix the script after 
> > testing with an extended exclude list for the main server.
> > 
> > That said, it would be best (for setups managed by professionals) to use 
> > separate LTSP servers anyway - like recommended in the manual: 
> > https://wiki.debian.org/DebianEdu/Documentation/Bullseye/Architecture#Services_running_on_the_main_server
> 
> Yes, that would be the desirable case. Nonetheless, using a combined
> server should not expose security-relevant data and keys to the
> public.
> 
> I will try my best to find out how to fix that.

Very good.

> In any case, should we warn users?
 
There won't be many, I guess; but yes.

Wolfgang

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