** Changed in: systemd (Ubuntu)
Status: Confirmed => Won't Fix
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Title:
systemd-logind network access is block
btw, I no longer work for Canonical, and this bug doesn't personally
affect me, so it's unlikely I will follow up on this; if anyone does
care about this bug, please feel free to take this over
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Ok let's go with option #1 then, just open up systemd-logind to network
access directly by editing the service file.
@mbiebl, do you want to patch this in Debian too, should I open a merge
request in salsa? Obviously if Debian is patched first, that's ideal.
Assuming you're ok with directly patchi
I initially preferred your option two, a drop-in file in whichever nis
and ldap binary packages, on principle of trying to keep the mitigations
in place if we can.
But your case for a difficult debugging session is persuasive. Reading
the various bug reports around this, option three seems pretty
One good point in favor of including systemd-userdbd in Debian/Ubuntu
would be that we only need to adjust the restrictions for that service;
all other systemd-provided services would use (or at least, *should*
use...) systemd-userdbd to get user records. I'm not sure if that is
actually worth incl
** Description changed:
[impact]
starting in focal, systemd-logind runs sandboxed without any network
access, which breaks any configuration that uses remote servers for user
data, e.g. ldap, nis, etc
A more full discussion is available in the upstream bug report as well
as the d
> @Dan: have you actually confirmed, that building and running userdbd
solves those issues with NIS and LDAP?
sorry for the delay in getting back to this.
So, you're correct, userdb doesn't actually help this, it only moves the
problem.
While systemd-userdbd.service does (currently, at least) al
I have to add, that I don't have such a NIS or LDAP setup to test this
myself.
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Title:
systemd-logind network access
@Dan: have you actually confirmed, that building and running userdbd
solves those issues with NIS and LDAP?
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Title:
I think Dan's summary above is very good. For clarification I would add
a couple of points.
The issue is not just remote logins. xdm behaves in the same way, and
the absence of a systemd-logind session may mean that sound is then
unavailable to the user logged in at the console. (Mentioned to help
Just to summarize the specific flow of this bug:
1. an application is started for a user session, e.g. sshd handles a user
connecting.
2. the application uses pam for authentication, which by default includes
pam_systemd as an (optional) module.
3. pam invokes pam_systemd as part of session crea
> > Other than the obvious approach of enabling systemd-userdb for Ubuntu,
>
> I don't see how that would help, given that sytemd-userdb.service has
>
> RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
>
> You basically have the same issue as with systemd-logind.service. Or am I
> mis
Xubuntu-20.04, 20.10 and 21.04 are not usable with ldap authentication - very
bad!
Not usable for us.
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Title:
syst
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: openldap (Ubuntu)
Status: New => Confirmed
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> Other than the obvious approach of enabling systemd-userdb for Ubuntu,
I don't see how that would help, given that sytemd-userdb.service has
RestrictAddressFamilies=AF_UNIX AF_NETLINK AF_INET AF_INET6
You basically have the same issue as with systemd-logind.service. Or am I
missing something
1) Include drop-in conf files for systemd-logind and systemd-udevd to
remove the networking sandbox
Those drop-in configs should be shipped in the nis package. I don't see
a reason to ship a drop-in for systemd-udevd, fwiw.
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Other than the obvious approach of enabling systemd-userdb for Ubuntu,
which is a much larger discussion/decision, I think there are really
only 2 ways to address this:
1) Include drop-in conf files for systemd-logind and systemd-udevd to remove
the networking sandbox
2) add configuration documen
** Also affects: openldap (Ubuntu)
Importance: Undecided
Status: New
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Title:
systemd-logind network access
** Changed in: nis (Debian)
Status: Unknown => Fix Released
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Title:
systemd-logind network access is blocked,
** Changed in: systemd
Status: Unknown => Fix Released
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Title:
systemd-logind network access is blocked, and b
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: nis (Ubuntu)
Status: New => Confirmed
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The Debian bug is marked as fixed, however unfortunately it seems to
have 'fixed' the problem simply by adding Recommends: nscd to the
ypbind-mt package, which only actually fixes things if the systemd admin
does install/use nscd. If the admin chooses not to use nscd, this bug
still exists.
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