[Bug 1915936] [NEW] systemd-coredump user is create by something other than its derived systemd packages
Eric Desrochers
1915936 at bugs.launchpad.net
Wed Feb 17 15:39:46 UTC 2021
Public bug reported:
systemd-coredump binary package is instructed as follows:
#debian/systemd-coredump.postinst:
adduser --quiet --system --group --no-create-home --home /run/systemd \
--gecos "systemd Core Dumper" systemd-coredump
But one doesn't need this package to be installed to have the systemd-
coredump user created. This was taken from a focal 20.04.2 fresh
installation (Right after a vanilla installation):
# cat /etc/passwd:
...
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
...
# dpkg -l | grep -i systemd
ii dbus-user-session 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (systemd --user integration)
ii libnss-systemd:amd64 245.4-4ubuntu3.4 amd64 nss module providing dynamic user and group name resolution
ii libpam-systemd:amd64 245.4-4ubuntu3.4 amd64 system and service manager - PAM module
ii libsystemd0:amd64 245.4-4ubuntu3.4 amd64 systemd utility library
ii networkd-dispatcher 2.0.1-1 all Dispatcher service for systemd-networkd connection status changes
ii python3-systemd 234-3build2 amd64 Python 3 bindings for systemd
ii systemd 245.4-4ubuntu3.4 amd64 system and service manager
ii systemd-sysv 245.4-4ubuntu3.4 amd64 system and service manager - SysV links
ii systemd-timesyncd 245.4-4ubuntu3.4 amd64 minimalistic service to synchronize local time with NTP servers
# /var/log/syslog
syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating group systemd-coredump with gid 999.
syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating user systemd-coredump (systemd Core Dumper) with uid 999 and gid 999.
Additionnally, you may notice the home directory during the user creation at installation sets it to "/" as opposed to "/run/systemd" directive in the appropriate postint. It is contradictory.
* Why systemd-coredump user is created at installation time and/or without 'systemd-coredump' package installed ?
* Why this early creation set the home directory to "/" ?
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
systemd-coredump binary package is instructed as follows:
- #debian/systemd-coredump.postinst:
+ #debian/systemd-coredump.postinst:
adduser --quiet --system --group --no-create-home --home /run/systemd \
--gecos "systemd Core Dumper" systemd-coredump
But one doesn't need this package to be installed to have the systemd-
coredump user created. This was taken from a focal 20.04.2 fresh
installation (Right after a vanilla installation):
# cat /etc/passwd:
...
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
...
# dpkg -l | grep -i systemd
ii dbus-user-session 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (systemd --user integration)
ii libnss-systemd:amd64 245.4-4ubuntu3.4 amd64 nss module providing dynamic user and group name resolution
ii libpam-systemd:amd64 245.4-4ubuntu3.4 amd64 system and service manager - PAM module
ii libsystemd0:amd64 245.4-4ubuntu3.4 amd64 systemd utility library
ii networkd-dispatcher 2.0.1-1 all Dispatcher service for systemd-networkd connection status changes
ii python3-systemd 234-3build2 amd64 Python 3 bindings for systemd
ii systemd 245.4-4ubuntu3.4 amd64 system and service manager
ii systemd-sysv 245.4-4ubuntu3.4 amd64 system and service manager - SysV links
ii systemd-timesyncd 245.4-4ubuntu3.4 amd64 minimalistic service to synchronize local time with NTP servers
-
- # /var/log/installer/installer-journal.txt
- Feb 17 15:27:19 ubuntu-server systemd-sysusers[844]: Creating group systemd-coredump with gid 998.
- Feb 17 15:27:19 ubuntu-server systemd-sysusers[844]: Creating user systemd-coredump (systemd Core Dumper) with uid 998 and gid 998.
+ # /var/log/syslog
+ syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating group systemd-coredump with gid 999.
+ syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating user systemd-coredump (systemd Core Dumper) with uid 999 and gid 999.
Additionnally, you may notice the home directory during the user creation at installation sets it to "/" as opposed to "/run/systemd" directive in the appropriate postint. It is contradictory.
-
* Why systemd-coredump user is created at installation time and/or without 'systemd-coredump' package installed ?
* Why this early creation set the home directory to "/" ?
** Summary changed:
- systemd-coredump user is create by something other than a derived systemd packages
+ systemd-coredump user is create by something other than its derived systemd packages
--
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1915936
Title:
systemd-coredump user is create by something other than its derived
systemd packages
Status in systemd package in Ubuntu:
New
Bug description:
systemd-coredump binary package is instructed as follows:
#debian/systemd-coredump.postinst:
adduser --quiet --system --group --no-create-home --home /run/systemd \
--gecos "systemd Core Dumper" systemd-coredump
But one doesn't need this package to be installed to have the systemd-
coredump user created. This was taken from a focal 20.04.2 fresh
installation (Right after a vanilla installation):
# cat /etc/passwd:
...
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
...
# dpkg -l | grep -i systemd
ii dbus-user-session 1.12.16-2ubuntu2.1 amd64 simple interprocess messaging system (systemd --user integration)
ii libnss-systemd:amd64 245.4-4ubuntu3.4 amd64 nss module providing dynamic user and group name resolution
ii libpam-systemd:amd64 245.4-4ubuntu3.4 amd64 system and service manager - PAM module
ii libsystemd0:amd64 245.4-4ubuntu3.4 amd64 systemd utility library
ii networkd-dispatcher 2.0.1-1 all Dispatcher service for systemd-networkd connection status changes
ii python3-systemd 234-3build2 amd64 Python 3 bindings for systemd
ii systemd 245.4-4ubuntu3.4 amd64 system and service manager
ii systemd-sysv 245.4-4ubuntu3.4 amd64 system and service manager - SysV links
ii systemd-timesyncd 245.4-4ubuntu3.4 amd64 minimalistic service to synchronize local time with NTP servers
# /var/log/syslog
syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating group systemd-coredump with gid 999.
syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating user systemd-coredump (systemd Core Dumper) with uid 999 and gid 999.
Additionnally, you may notice the home directory during the user creation at installation sets it to "/" as opposed to "/run/systemd" directive in the appropriate postint. It is contradictory.
* Why systemd-coredump user is created at installation time and/or without 'systemd-coredump' package installed ?
* Why this early creation set the home directory to "/" ?
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1915936/+subscriptions
More information about the foundations-bugs
mailing list