If a package's meta has `knownVulnerabilities`, like so:
stdenv.mkDerivation {
name = "foobar-1.2.3";
...
meta.knownVulnerabilities = [
"CVE-0000-00000: remote code execution"
"CVE-0000-00001: local privilege escalation"
];
}
and a user attempts to install the package, they will be greeted with
a warning indicating that maybe they don't want to install it:
error: Package ‘foobar-1.2.3’ in ‘...default.nix:20’ is marked as insecure, refusing to evaluate.
Known issues:
- CVE-0000-00000: remote code execution
- CVE-0000-00001: local privilege escalation
You can install it anyway by whitelisting this package, using the
following methods:
a) for `nixos-rebuild` you can add ‘foobar-1.2.3’ to
`nixpkgs.config.permittedInsecurePackages` in the configuration.nix,
like so:
{
nixpkgs.config.permittedInsecurePackages = [
"foobar-1.2.3"
];
}
b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
‘foobar-1.2.3’ to `permittedInsecurePackages` in
~/.config/nixpkgs/config.nix, like so:
{
permittedInsecurePackages = [
"foobar-1.2.3"
];
}
Adding either of these configurations will permit this specific
version to be installed. A third option also exists:
NIXPKGS_ALLOW_INSECURE=1 nix-build ...
though I specifically avoided having a global file-based toggle to
disable this check. This way, users don't disable it once in order to
get a single package, and then don't realize future packages are
insecure.
When dhcpcd instead of networkd is used, the network-online.target behaved
the same as network.target, resulting in broken services that need a working
network connectivity when being started.
This commit makes dhcpcd wait for a lease and makes it wanted by
network-online.target. In turn, network-online.target is now wanted by
multi-user.target, so it will be activated at every boot.
This makes make-disk-image.nix slightly more consistent with other image
builders we have. Unfortunately I duplicated some code in doing so, but
this is temporary duplication on the path to consolidating everything.
See https://github.com/NixOS/nixpkgs/issues/23052 for more details on that.
I'm also exposing the option in the amazon-image.nix maintainer module.
Using toJSON on a string value works because the allowed JSON escape
sequences is almost a subset of the systemd allowed escape sequences.
The only exception is `\/` which JSON allows but systemd doesn't.
Luckily this sequence isn't required and toJSON don't produce it making
the result valid for systemd consumption.
Examples of things that this fixes are environment variables with double
quotes or newlines.
Since systemd version 232 the install subcommand of bootctl opens the
loader.conf with fopen() modes "wxe", where the "e" stands for
exclusive, so the call will fail if the file exists.
For installing the boot loader just once this is fine, but if we're
using NIXOS_INSTALL_BOOTLOADER on a systemd where the bootloader is
already present this will fail.
Exactly this is done within the simpleUefiGummiboot installer test,
where nixos-install is called twice and thus the bootloader is also
installed twice, resulting in an error during the fopen call:
Failed to open loader.conf for writing: File exists
Removing the file prior to calling bootctl should fix this.
I've tested this using the installer.simpleUefiGummiboot test and it now
succeeds.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @edolstra, @shlevy, @mic92
Fixes: #22925
This leads to the following error when trying to install a new machine
where the machine ID wasn't yet initialized during boot:
Failed to get machine did: No such file or directory
In addition this was also detected by the simpleUefiGummiboot installer
test.
So let's generate a fallback machine ID by using
systemd-machine-id-setup before actually running bootctl.
Tested this by running the installer.simpleUefiGummiboot test, it still
fails but not because of the machine ID.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @edolstra, @shlevy, @mic92
Fixes: #22561
This is deliberate because using the taskd binary to configure
Taskserver has a good chance of messing up permissions.
The nixos-taskserver tool now can manage even manual configurations, so
there really is no need anymore to expose the taskd binary.
If people still want to use the taskd binary at their own risk they can
still add taskserver to systemPackages themselves.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
This subtest actually serves two purposes:
1. Test manual PKI configuration
2. Test changing of configuration files
In order to only test manual PKI configuration it would have been enough
to just add another server with a manual config.
But as the switch from automatic PKI config to manual config is probably
one of the most fundamental changes in configuration, so it serves
*very* well to also check whether changes in the NixOS configuration
actually have an impact in the real system.
So instead of adding another server, we now create a dummy "newServer"
machine, which is the new configuration for "server" and use
switch-to-configuration to switch "server" to the config of "newServer".
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Putting an include directive in the configuration file referencing a
store path with the real configuration file has the disavantage that
once we change the real configuration file the store path is also a
different one.
So we would have to replace that include directive with the new
configuration file, which is very much error-prone, because whenever
taskd modifies the configuration file on its own it generates a new one
with *only* the key/value options and without any include directives.
Another problem is that we only added the include directive on the first
initalization, so whenever there is *any* configuration change, it won't
affect anything.
We're now passing all the configuration options via command line,
because taskd treats everything in the form of --<name>=<value> to be a
configuration directive.
This also has the effect that we now no longer have extraConfig, because
configuration isn't a file anymore.
Instead we now have an attribute set that is mapped down to
configuration options.
Unfortunately this isn't so easy with the way taskd is configured,
because there is an option called "server" and also other options like
"server.cert", "server.key" and so on, which do not map very well to
attribute sets.
So we have an exception for the "server" option, which is now called
"server.listen", because it specifies the listening address.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Fixes: #22705
The helper tool so far was only intended for use in automatic PKI
handling, but it also is very useful if you have an existing CA.
One of the main advantages is that you don't need to specify the data
directory anymore and the right permissions are also handled as well.
Another advantage is that we now have an uniform management tool for
both automatic and manual config, so the documentation in the NixOS
manual now applies to the manual PKI config as well.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
The error message displays that a specific user doesn't exist in an
organisation, but uses the User object's name attribute to show which
user it was.
This is basically a very stupid chicken and egg problem and easily fixed
by using the user name provided on the command line.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
A long-time issue and one of the reasons I've never used that function
before. So let's remove that todo-comment and escape the contents
properly.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Cc: @edolstra
reason: after the upgrade of iputils from 20151218 to 20161105
functionality of ping6 and tracepath6 was merged into ping and tracepath.
Ping is now mostly a drop-in replacment for ping6, except that selecting a
specific interface is done by encoding it into the address (ex.: fe80::1%eth0)
rather then specifing it with the `-I` flag.
To be able to use Wireshark as an ordinary user, the 'dumpcap' program
must be installed setuid root. This module module simplifies such a
configuration to simply:
programs.wireshark.enable = true;
The setuid wrapper is available for users in the 'wireshark' group.
Changes v1 -> v2:
- add "defaultText" to the programs.wireshark.package option (AFAIK,
that prevents the manual from being needlessly rebuilt when the
package changes)
Since the bonds interface changed to a lot more possible values we create a
mapping of kernel bond attribute names and values to networkd attributes.
Those match for the most part, but have to transformed slightly.
There is also an assert that unknown options won’t slip through silently.
Until now the four attributes available very selectively provided a small
subset, while copying upstream documentation.
We make driver options an arbitrary key-value set and point to kernel
documentation, which is always up-to-date. This way every option can be set.
The four already existing options are deprecated with a warning.
The initialization code is now a systemd service that explicitly
waits for network-online, so the occasional failure I was seeing
because the `nixos-rebuild` couldn't get anything from the binary
cache should stop. I hope!
* The source attribute is mandatory, not optional
* The program attribute is optional
* Move the info about the mandatory attribute first (most important,
IMHO)
Previously, netdev units for network interfaces defined in the nixos
configurations would bindTo the systemd device unit of the interface if
not in a container.
In situations where you switch to a new nixos configration with changes
to network-setup.service (like nameservers) and have stacked interfaces
like vlans on a bond, it would fail to propagate restarts to the netdevs
correctly resulting with broken networking. The bond would be present
but no vlan interfaces rendering the machine unreachable.
My fear is that the udev events fail to propagate correctly while a systemd
transaction that is also restarting the triggered netdev service is running.
This commit changes this behaviour so netdev services bindTo other netdev
services if present and otherwise fall back to the previous behaviour.
We also noticed that stacked interfaces would sometimes seemingly be stopped
in the wrong order. For instance in the above example, the bond interface
would be deleted before the vlan interfaces resulting in the vlan interfaces
not being present when their service is being stopped. This would cause the
systemd transaction to fail and thus break networking. Their postStop hooks
are now allowed to fail as we have reached the desired state.
fix#22709
Recent pvgrub (from Grub built with “--with-platform=xen”) understands
the Grub2 configuration format. Grub legacy configuration (menu.lst) is
ignored.
The GeoIP databases from MaxMind have no stable URLs and change every
month (or so). Our current method of packaging these database in Nix and
playing catch-up with ever-changing file hashes is a bad idea. For
instance, it makes it impossible to realize old NixOS configurations.
This patch adds a NixOS service that periodically updates the GeoIP
databases in /var/lib/geoip-databases. Moving NixOS modules over can be
done in later patches.
I tried adding MD5 check, but not all databases have them, so i skipped
it. We are downloading over HTTPS though, it should be good. I also
tried adding zip support, but the first zip file I extracted had a
different filename inside than the archive name, which breaks an
assumption in this service, so I skipped that too.
Changes v9 -> v10:
- Pass "--max-time" to curl to set upper bound on downloads (ensures
no indefinite hanging if there's problem with networking).
Timeout for network connectivity check: 60s.
Timeout for geoip database (each): 15m.
Changes v8 -> v9:
- Mention the random timer delay in the documentation for the
'interval' option.
Changes v7 -> v8:
- Add "RemainAfterExit=true" for the setup service, so it won't be
restarted needlessly. (Thanks @danbst!)
Changes v6 -> v7:
- Add --skip-existing flag to geoip-updater, which skips updating
existing database files. Pass that flag when we run the service on
boot (and on any NixOS configuration change).
(IMHO, this is somewhat a workaround for systemd persistent timers
not being triggered immediately when a timer has never expired
before. But it does have the nice side effect of ensuring that the
installed databases always correspond to the configured ones, since
the service is now always run after configuration changes.)
Changes v5 -> v6:
- Update database files atomically (per DB)
- If a database is removed from the configuration, it'll be removed
from /var/lib/geoip-databases too (on next run).
- Add NixOS module assertion so that if user inputs non- .gz or .xz
file there will be a build time error instead of runtime.
- Run updater as user "nobody" instead of "root".
- Rename NixOS service from "geoip-databases" to "geoip-updater".
- Drop RemainAfterExit, or else the timer won't trigger the unit.
- Bring back "curl --fail", or else we won't catch and log curl
failures.
Changes v4 -> v5:
- Add "GeoLite2-City.mmdb.gz" to default database list.
Changes v3 -> v4:
- Remove unneeded geoip-updater-setup.service after adding
'wantedBy = [ "multi-user.target" ]' directly to
geoip-updater.service
- Drop unneeded "Service" name from service descriptions.
Changes v2 -> v3:
- Network may be down when starting from a cold boot, so try a few
times. Possibly, if using systemd-networkd, it'll pass on the first
try. But with default DHCP on NixOS, the service is started before
hostnames can be resolved and thus we need a few extra seconds.
- Add error handling and mark service as failed if fatal error.
- Add proper syslog log levels.
- Add RandomizedDelaySec=3600 to the timer to not put high load on the
MaxMind servers. Suggested by @Mic92.
- Set RemainAfterExit on geoip-updater.service instead of
geoip-updater-setup.service. (The latter is only a proxy that pulls
in the former service).
Changes v1 -> v2:
From Данило Глинський (Danylo Hlynskyi) <abcz2.uprola@gmail.com>:
nixos/geoip-databases: add `databases` option and fix initial setup
There were two great issues when using this service:
- When you just enable service, databases aren't downloaded, they are
downloaded when timer triggers. Fixed this with automatic download on
first system activation.
- When there is no internet, updater outputs nothing to logs, which is
IMO misbehavior. Fixed this with removing `--fail` option, better be
explicit here.
