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Re: Debian package manager privilege escalation attack

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Timothy M Butterworth:
> All,
> 
> I just ran across this article
> https://blog.ikuamike.io/posts/2021/package_managers_privesc/ I tested
> the attacks on Debian 11 and they work successfully giving me a root
> shell prompt.
> 
> Tim
> 

Hi Tim,

All of the attacks presented assumes that the local user has "sudo"
permissions to run apt and use that as the basis for escalating
privileges (not commenting on yum or snap).

I think it is a good demonstration of how some sudo policies are too
lenient and can be exploited.  Though I am not sure this is a bug in
apt, as I do not think apt ever promised to be "safe" to use from a
constrained sudo policy.

Note that the blog post itself also mentions this:

"""
[...] In certain cases the user should not be a root/admin user but has
been assigned sudo permissions to run the package manager only for
package management purposes.

We’ll look at how this permission can be abused to gain root access to
the machine via a root shell.
"""
(from the "Introduction")

My reading is that "this permission" refers to the "assigned sudo
permissions".

Thanks,
~Niels

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Thread

Debian package manager privilege escalation attack Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2021-08-12 05:40 +0200
  Re: Debian package manager privilege escalation attack Brian Thompson <brian@hashvault.io> - 2021-08-12 06:00 +0200
    Re: Debian package manager privilege escalation attack Andrey Rahmatullin <wrar@debian.org> - 2021-08-12 07:50 +0200
      Re: Debian package manager privilege escalation attack Brian Thompson <brian@hashvault.io> - 2021-08-12 08:20 +0200
        Re: Debian package manager privilege escalation attack Andrey Rahmatullin <wrar@debian.org> - 2021-08-12 08:30 +0200
          Re: Debian package manager privilege escalation attack Paul Tagliamonte <paultag@debian.org> - 2021-08-12 15:00 +0200
  Re: Debian package manager privilege escalation attack Andrey Rahmatullin <wrar@debian.org> - 2021-08-12 07:40 +0200
    Re: Debian package manager privilege escalation attack Vincent Bernat <bernat@debian.org> - 2021-08-12 08:40 +0200
      Re: Debian package manager privilege escalation attack Andrey Rahmatullin <wrar@debian.org> - 2021-08-12 08:40 +0200
        Re: Debian package manager privilege escalation attack Vincent Bernat <bernat@debian.org> - 2021-08-12 09:00 +0200
      Re: Debian package manager privilege escalation attack Ansgar <ansgar@43-1.org> - 2021-08-12 10:40 +0200
        Re: Debian package manager privilege escalation attack Vincent Bernat <bernat@debian.org> - 2021-08-12 11:20 +0200
      Re: Debian package manager privilege escalation attack Philipp Kern <pkern@debian.org> - 2021-08-12 11:20 +0200
      Re: Debian package manager privilege escalation attack David Kalnischkies <david@kalnischkies.de> - 2021-08-12 13:50 +0200
      Re: Debian package manager privilege escalation attack Kyle Edwards <kyle.edwards@kitware.com> - 2021-08-12 14:40 +0200
        Re: Debian package manager privilege escalation attack Andrey Rahmatullin <wrar@debian.org> - 2021-08-12 14:50 +0200
  Re: Debian package manager privilege escalation attack Niels Thykier <niels@thykier.net> - 2021-08-12 07:40 +0200
    Re: Debian package manager privilege escalation attack Andrey Rahmatullin <wrar@debian.org> - 2021-08-12 08:20 +0200
      Re: Debian package manager privilege escalation attack Brian Thompson <brian@hashvault.io> - 2021-08-12 08:30 +0200
        Re: Debian package manager privilege escalation attack Andrey Rahmatullin <wrar@debian.org> - 2021-08-12 08:40 +0200
        Re: Debian package manager privilege escalation attack Polyna-Maude Racicot-Summerside <debian@polynamaude.com> - 2021-08-12 12:30 +0200
          Re: Debian package manager privilege escalation attack Philipp Kern <pkern@debian.org> - 2021-08-12 13:50 +0200
            Re: Debian package manager privilege escalation attack Marc Haber <mh+debian-devel@zugschlus.de> - 2021-08-12 18:00 +0200
              Re: Debian package manager privilege escalation attack Philipp Kern <pkern@debian.org> - 2021-08-12 20:10 +0200
                Re: Debian package manager privilege escalation attack Russ Allbery <rra@debian.org> - 2021-08-12 21:10 +0200
    Re: Debian package manager privilege escalation attack Brian Thompson <brian@hashvault.io> - 2021-08-12 08:20 +0200
      Re: Debian package manager privilege escalation attack Holger Levsen <holger@layer-acht.org> - 2021-08-12 15:20 +0200
        Re: Debian package manager privilege escalation attack Holger Levsen <holger@layer-acht.org> - 2021-08-12 18:10 +0200
        Re: Debian package manager privilege escalation attack Wouter Verhelst <wouter@debian.org> - 2021-08-16 16:50 +0200

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