f5a4ce1d35
On a Debian 10 system, I saw denials for ulogd service:
* It uses a pipe with itself:
type=AVC msg=audit(1567874422.328:13744): avc: denied { write }
for pid=11416 comm="ulogd" path="pipe:[29006]" dev="pipefs"
ino=29006 scontext=system_u:system_r:ulogd_t
tcontext=system_u:system_r:ulogd_t tclass=fifo_file permissive=0
* It enumerates users in /run/systemd/dynamic-uid/ when changing to the
ulog user (which is not dynamic):
type=AVC msg=audit(1567874512.576:13748): avc: denied { read } for
pid=18290 comm="ulogd" name="dynamic-uid" dev="tmpfs" ino=16527
scontext=system_u:system_r:ulogd_t
tcontext=system_u:object_r:init_var_run_t tclass=dir permissive=0
* It connects to the system D-Bus socket in order to call GetDynamicUser:
type=AVC msg=audit(1567875114.147:13761): avc: denied { write }
for pid=28135 comm="ulogd" name="system_bus_socket" dev="tmpfs"
ino=13799 scontext=system_u:system_r:ulogd_t
tcontext=system_u:object_r:system_dbusd_var_run_t tclass=sock_file
permissive=1
type=AVC msg=audit(1567875114.147:13761): avc: denied { connectto
} for pid=28135 comm="ulogd" path="/run/dbus/system_bus_socket"
scontext=system_u:system_r:ulogd_t
tcontext=system_u:system_r:system_dbusd_t tclass=unix_stream_socket
permissive=1
type=USER_AVC msg=audit(1567875276.683:13776): pid=432 uid=106
auid=4294967295 ses=4294967295 subj=system_u:system_r:system_db
usd_t msg='avc: denied { send_msg } for msgtype=method_call
interface=org.freedesktop.systemd1.Manager member=GetDynamicUsers
dest=org.freedesktop.systemd1 spid=30953 tpid=1
scontext=system_u:system_r:ulogd_t tcontext=system_u:system_r:init_t
tclass=dbus permissive=1 exe="/usr/bin/dbus-daemon" sauid=106
hostname=? addr=? terminal=?'
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
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