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Re: Embarrassing security bug in systemd

From David Wright <deblis@lionunicorn.co.uk>
Newsgroups linux.debian.user
Subject Re: Embarrassing security bug in systemd
Date 2017-12-07 02:10 +0100
Message-ID <uTSRk-7LQ-3@gated-at.bofh.it> (permalink)
References <uTQcO-62s-9@gated-at.bofh.it> <uTR8S-6DS-1@gated-at.bofh.it> <uTRBT-6NU-1@gated-at.bofh.it>
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On Wed 06 Dec 2017 at 15:25:10 (-0800), James H. H. Lampert wrote:
> On 12/6/17, 2:53 PM, Michael Lange wrote:
> >uh, I guess you ought to have used your time to check your machine and
> >read some docs instead of figuring out how to best insult the debian
> >developers ;)
> >(scnr)
> 
> Now, now, you walk up to the physical console on an AS/400, you're
> not going to be able to do a PWRDWNSYS from a sign-on screen, nor
> can do it if signed on as a user who doesn't have sufficient
> authority to do a PWRDWNSYS. And you might be physically locked out
> of the front panel. It's even possible that you might be physically
> interdicted from unplugging the box, or shutting it down from the
> circuit breaker panel.

I can't speak for your jurisdiction, but typically you can shut down
a machine room without access to the room itself. I guess one reason
for this is that the halon fire suppression would kill you on entry.
With the Cambridge University computing service in the days of the
370/165, the cut-off switch was high on the wall in the "cafeteria"
area (self-service card reader and line printer) which was open to
users 24 hours a day.

> Not every OS assumes by default that anybody with physical access to
> the hardware also has the authority to shut it down.

I didn't know we were talking about authority. One of the pastimes
of kids in rough neighbourhoods is to pull the Engine Stop lever
while a bus is picking up passengers.

> (And likewise, accounts, including QSECOFR [the closest OS/400
> equivalent to root] can be restricted to certain physical
> terminals.)

Cheers,
David.

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Thread

Embarrassing security bug in systemd Urs Thuermann <urs@isnogud.escape.de> - 2017-12-06 23:20 +0100
  Re: Embarrassing security bug in systemd Roberto C. Sánchez <roberto@debian.org> - 2017-12-06 23:50 +0100
    Re: Embarrassing security bug in systemd Ben Caradoc-Davies <ben@transient.nz> - 2017-12-07 00:40 +0100
      Re: Embarrassing security bug in systemd Roberto C. Sánchez <roberto@debian.org> - 2017-12-07 03:50 +0100
        Re: Embarrassing security bug in systemd deloptes <deloptes@gmail.com> - 2017-12-07 07:30 +0100
  Re: Embarrassing security bug in systemd Ben Caradoc-Davies <ben@transient.nz> - 2017-12-06 23:50 +0100
    Re: Embarrassing security bug in systemd Dave Sherohman <dave@sherohman.org> - 2017-12-07 10:40 +0100
      Re: Embarrassing security bug in systemd Tixy <tixy@yxit.co.uk> - 2017-12-07 11:30 +0100
        Re: Embarrassing security bug in systemd Jonathan Dowland <jmtd@debian.org> - 2017-12-07 11:50 +0100
          Re: Embarrassing security bug in systemd Jimmy Johnson <field.engineer@gmail.com> - 2017-12-09 03:50 +0100
            Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-09 17:50 +0100
              Re: Embarrassing security bug in systemd Jimmy Johnson <field.engineer@gmail.com> - 2017-12-10 10:00 +0100
                Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-10 20:40 +0100
      Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-07 11:40 +0100
      Re: Embarrassing security bug in systemd Roberto C. Sánchez <roberto@debian.org> - 2017-12-07 16:00 +0100
        Re: Embarrassing security bug in systemd Michael Biebl <biebl@debian.org> - 2017-12-07 20:30 +0100
          Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-08 09:20 +0100
          Re: Embarrassing security bug in systemd deloptes <deloptes@gmail.com> - 2017-12-08 12:40 +0100
            Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-08 13:40 +0100
              Re: Embarrassing security bug in systemd deloptes <deloptes@gmail.com> - 2017-12-08 21:40 +0100
            Re: Embarrassing security bug in systemd Jonathan Dowland <jmtd@debian.org> - 2017-12-08 17:10 +0100
              Re: Embarrassing security bug in systemd Curt <curty@free.fr> - 2017-12-08 19:10 +0100
              Re: Embarrassing security bug in systemd Menelaos Maglis <mmaglis@metacom.gr> - 2017-12-08 19:40 +0100
              Re: Embarrassing security bug in systemd Menelaos Maglis <mmaglis@metacom.gr> - 2017-12-08 19:50 +0100
                Re: Embarrassing security bug in systemd Jonathan Dowland <jmtd@debian.org> - 2017-12-08 20:50 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-08 21:20 +0100
                Re: Embarrassing security bug in systemd Jonathan Dowland <jmtd@debian.org> - 2017-12-09 09:10 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-09 11:20 +0100
                Re: Embarrassing security bug in systemd Jonathan Dowland <jmtd@debian.org> - 2017-12-09 19:40 +0100
                Re: Embarrassing security bug in systemd Dejan Jocic <jodejka@gmail.com> - 2017-12-09 20:30 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-09 22:00 +0100
                Re: Embarrassing security bug in systemd Dejan Jocic <jodejka@gmail.com> - 2017-12-10 00:40 +0100
                Re: Embarrassing security bug in systemd Joe <joe@jretrading.com> - 2017-12-10 10:40 +0100
                Re: Embarrassing security bug in systemd Dejan Jocic <jodejka@gmail.com> - 2017-12-10 11:20 +0100
                Re: Embarrassing security bug in systemd Joe <joe@jretrading.com> - 2017-12-10 12:40 +0100
                Re: Embarrassing security bug in systemd Dejan Jocic <jodejka@gmail.com> - 2017-12-10 16:10 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-11 15:10 +0100
                Re: Embarrassing security bug in systemd Roberto C. Sánchez <roberto@debian.org> - 2017-12-09 21:10 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-09 21:10 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-08 21:50 +0100
                Re: Embarrassing security bug in systemd John Hasler <jhasler@newsguy.com> - 2017-12-08 22:30 +0100
                Re: Embarrassing security bug in systemd Glenn English <ghe2001@gmail.com> - 2017-12-09 02:50 +0100
                Re: Embarrassing security bug in systemd John Hasler <jhasler@newsguy.com> - 2017-12-09 06:50 +0100
                Re: Embarrassing security bug in systemd Jonathan Dowland <jmtd@debian.org> - 2017-12-09 09:20 +0100
                Re: Embarrassing security bug in systemd Jonathan Dowland <jmtd@debian.org> - 2017-12-09 09:10 +0100
                Re: Embarrassing security bug in systemd Christian Seiler <christian@iwakd.de> - 2017-12-15 13:30 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-15 14:10 +0100
                Re: Embarrassing security bug in systemd John Hasler <jhasler@newsguy.com> - 2017-12-15 16:00 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-08 21:50 +0100
                Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-08 22:40 +0100
                Re: Embarrassing security bug in systemd John Hasler <jhasler@newsguy.com> - 2017-12-09 00:30 +0100
                Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-09 10:00 +0100
        Re: Embarrassing security bug in systemd Dave Sherohman <dave@sherohman.org> - 2017-12-08 10:00 +0100
      Re: Embarrassing security bug in systemd Cindy-Sue Causey <butterflybytes@gmail.com> - 2017-12-08 23:40 +0100
        Re: Embarrassing security bug in systemd Joe <joe@jretrading.com> - 2017-12-09 00:30 +0100
          Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-09 01:20 +0100
            Re: Embarrassing security bug in systemd Joe <joe@jretrading.com> - 2017-12-09 11:40 +0100
              Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-09 15:30 +0100
                Re: Embarrassing security bug in systemd The Wanderer <wanderer@fastmail.fm> - 2017-12-10 01:00 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-10 22:20 +0100
              Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-09 17:50 +0100
                Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-09 18:20 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-09 21:20 +0100
                Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-10 12:00 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-10 17:10 +0100
                Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-10 20:40 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-10 21:30 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-10 23:10 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-11 00:10 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-11 00:50 +0100
                Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-11 12:30 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-11 13:40 +0100
                Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-11 14:40 +0100
                Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-10 21:50 +0100
                Re: Embarrassing security bug in systemd Eduardo M KALINOWSKI <eduardo@kalinowski.com.br> - 2017-12-11 13:00 +0100
                Re: Embarrassing security bug in systemd <tomas@tuxteam.de> - 2017-12-11 13:40 +0100
                Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-11 16:30 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-10 23:10 +0100
                Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-11 01:30 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-11 04:40 +0100
                Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-11 06:10 +0100
                Re: Embarrassing security bug in systemd Gene Heskett <gheskett@shentel.net> - 2017-12-11 07:40 +0100
                Rust? (and a wordsmithing question) (was: Re: Embarrassing security bug in systemd) rhkramer@gmail.com - 2017-12-11 15:40 +0100
                Re: Rust? (and a wordsmithing question) (was: Re: Embarrassing  security bug in systemd) Darac Marjal <mailinglist@darac.org.uk> - 2017-12-11 16:00 +0100
                Re: Rust? (and a wordsmithing question) (was: Re: Embarrassing security bug in systemd) rhkramer@gmail.com - 2017-12-11 18:30 +0100
                Re: Rust? (and a wordsmithing question) (was: Re: Embarrassing  security bug in systemd) Joe <joe@jretrading.com> - 2017-12-11 16:30 +0100
                Re: Rust? (and a wordsmithing question) "James H. H. Lampert" <jamesl@touchtonecorp.com> - 2017-12-11 17:40 +0100
                Re: Rust? (and a wordsmithing question) David Wright <deblis@lionunicorn.co.uk> - 2017-12-11 20:10 +0100
                Re: Rust? (and a wordsmithing question) <tomas@tuxteam.de> - 2017-12-12 09:30 +0100
                Re: Rust? (and a wordsmithing question) "James H. H. Lampert" <jamesl@touchtonecorp.com> - 2017-12-12 17:30 +0100
                Re: Rust? (and a wordsmithing question) <tomas@tuxteam.de> - 2017-12-12 17:50 +0100
                Re: Rust? (and a wordsmithing question) Curt <curty@free.fr> - 2017-12-12 18:20 +0100
                Re: Rust? (and a wordsmithing question) Richard Hector <richard@walnut.gen.nz> - 2017-12-13 04:40 +0100
                Re: Rust? (and a wordsmithing question) (was: Re: Embarrassing security bug in systemd) rhkramer@gmail.com - 2017-12-11 18:30 +0100
                Re: Rust? (and a wordsmithing question) (was: Re: Embarrassing  security bug in systemd) David Wright <deblis@lionunicorn.co.uk> - 2017-12-12 19:10 +0100
                UID 1000 on Raspberry Pi (Was: Re: Embarrassing security bug in  systemd) Jason <electron@emypeople.net> - 2018-01-09 05:10 +0100
                Re: UID 1000 on Raspberry Pi (Was: Re: Embarrassing security bug in  systemd) Christian Groessler <chris@groessler.org> - 2018-01-09 16:00 +0100
                Re: UID 1000 on Raspberry Pi (Was: Re: Embarrassing security bug in  systemd) Roberto C. Sánchez <roberto@debian.org> - 2018-01-09 16:30 +0100
                Re: UID 1000 on Raspberry Pi (Was: Re: Embarrassing security bug in  systemd) Christian Groessler <chris@groessler.org> - 2018-01-09 18:10 +0100
                Re: UID 1000 on Raspberry Pi (Was: Re: Embarrassing security bug in  systemd) Erik Christiansen <dvalin@internode.on.net> - 2018-01-10 04:50 +0100
          Re: Embarrassing security bug in systemd Menelaos Maglis <mmaglis@metacom.gr> - 2017-12-09 01:40 +0100
            Re: Embarrassing security bug in systemd Mark Fletcher <mark27q1@gmail.com> - 2017-12-09 03:10 +0100
              Re: Embarrassing security bug in systemd Joe <joe@jretrading.com> - 2017-12-09 10:50 +0100
        Re: Embarrassing security bug in systemd Ric Moore <wayward4now@gmail.com> - 2017-12-09 16:40 +0100
          Re: Embarrassing security bug in systemd Tom Furie <tom@furie.org.uk> - 2017-12-09 17:10 +0100
            Re: Embarrassing security bug in systemd Ben Caradoc-Davies <ben@transient.nz> - 2017-12-09 22:10 +0100
          Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-09 18:20 +0100
  Re: Embarrassing security bug in systemd Michael Stone <mstone@debian.org> - 2017-12-07 00:00 +0100
    Re: Embarrassing security bug in systemd Joe <joe@jretrading.com> - 2017-12-07 09:40 +0100
  Re: Embarrassing security bug in systemd Glenn English <ghe2001@gmail.com> - 2017-12-07 00:10 +0100
  Re: Embarrassing security bug in systemd Brian <ad44@cityscape.co.uk> - 2017-12-07 00:10 +0100
    Re: Embarrassing security bug in systemd Roberto C. Sánchez <roberto@debian.org> - 2017-12-07 03:50 +0100
  Re: Embarrassing security bug in systemd Michael Lange <klappnase@freenet.de> - 2017-12-07 00:20 +0100
    Re: Embarrassing security bug in systemd "James H. H. Lampert" <jamesl@touchtonecorp.com> - 2017-12-07 00:50 +0100
      Re: Embarrassing security bug in systemd Michael Stone <mstone@debian.org> - 2017-12-07 01:20 +0100
        Re: Embarrassing security bug in systemd Roberto C. Sánchez <roberto@debian.org> - 2017-12-07 03:50 +0100
      Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-07 02:10 +0100
        Re: Embarrassing security bug in systemd Nicholas Geovanis <nickgeovanis@gmail.com> - 2017-12-07 03:40 +0100
          Re: Embarrassing security bug in systemd Eric S Fraga <e.fraga@ucl.ac.uk> - 2017-12-07 08:30 +0100
    Re: Embarrassing security bug in systemd Michael Biebl <biebl@debian.org> - 2017-12-07 00:50 +0100
      Re: Embarrassing security bug in systemd Dejan Jocic <jodejka@gmail.com> - 2017-12-07 02:40 +0100
      Re: Embarrassing security bug in systemd Menelaos Maglis <mmaglis@metacom.gr> - 2017-12-08 10:40 +0100
        Re: Embarrassing security bug in systemd Roberto C. Sánchez <roberto@debian.org> - 2017-12-08 13:40 +0100
          Re: Embarrassing security bug in systemd deloptes <deloptes@gmail.com> - 2017-12-08 20:10 +0100
  Re: Embarrassing security bug in systemd David Wright <deblis@lionunicorn.co.uk> - 2017-12-07 01:10 +0100
  Re: Embarrassing security bug in systemd Eric S Fraga <e.fraga@ucl.ac.uk> - 2017-12-07 08:30 +0100
  Re: Embarrassing security bug in systemd David Baron <dbaron770@gmail.com> - 2017-12-07 08:50 +0100

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