** Changed in: apparmor (Ubuntu)
Status: Confirmed => In Progress
** Changed in: apparmor (Ubuntu)
Assignee: (unassigned) => Jamie Strandboge (jdstrand)
** Changed in: apparmor (Ubuntu)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1796911
Title:
libnss-systemd was denied talking to pid1
Status in apparmor package in Ubuntu:
In Progress
Bug description:
cosmic
apparmor 2.12-4ubuntu8
kernel 4.18.0-8-generic #9-Ubuntu
I'm getting these audit messages in dmesg showing apparmor denied errors:
[ 68.649187] audit: type=1107 audit(1539094926.655:32): pid=605 uid=105
auid=4294967295 ses=4294967295 subj==unconfined msg='apparmor="DENIED"
operation="dbus_method_call" bus="system" path="/org/freedesktop/systemd1"
interface="org.freedesktop.systemd1.Manager" member="GetDynamicUsers"
mask="send" name="org.freedesktop.systemd1" pid=1091 label="/usr/sbin/named"
peer_pid=1 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=105 hostname=? addr=?
terminal=?'
[ 161.059989] audit: type=1107 audit(1539095018.957:33): pid=605 uid=105
auid=4294967295 ses=4294967295 subj==unconfined msg='apparmor="DENIED"
operation="dbus_method_call" bus="system" path="/org/freedesktop/systemd1"
interface="org.freedesktop.systemd1.Manager" member="GetDynamicUsers"
mask="send" name="org.freedesktop.systemd1" pid=1191 label="/usr/sbin/named"
peer_pid=1 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=105 hostname=? addr=?
terminal=?'
[ 437.582034] audit: type=1107 audit(1539095295.553:34): pid=605 uid=105
auid=4294967295 ses=4294967295 subj==unconfined msg='apparmor="DENIED"
operation="dbus_method_call" bus="system" path="/org/freedesktop/systemd1"
interface="org.freedesktop.systemd1.Manager" member="GetDynamicUsers"
mask="send" name="org.freedesktop.systemd1" pid=1534 label="/usr/sbin/named"
peer_pid=1 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=105 hostname=? addr=?
terminal=?'
[ 468.184231] audit: type=1107 audit(1539095326.159:35): pid=605 uid=105
auid=4294967295 ses=4294967295 subj==unconfined msg='apparmor="DENIED"
operation="dbus_method_call" bus="system" path="/org/freedesktop/systemd1"
interface="org.freedesktop.systemd1.Manager" member="GetDynamicUsers"
mask="send" name="org.freedesktop.systemd1" pid=1577 label="/usr/sbin/named"
peer_pid=1 peer_label="unconfined"
exe="/usr/bin/dbus-daemon" sauid=105 hostname=? addr=?
terminal=?'
I pinged #ubuntu-hardened, and xnox had these comments:
<xnox> ha
<xnox> ahasenack, libnss-systemd was denied talking to pid1
<xnox> to query dynamicusers i think
<xnox> so i think something somehwere need adjustemnt to allow libnss-systemd
to talk to pid1 and call GetDynamicUsers
<xnox> LookupDynamicUserByName LookupDynamicUserByUID GetDynamicUsers
<xnox> as well
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