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Allow greeter to start dbus 

The display manager lightdm (and I think gdm) start a dbus binary.

v3 - Updated based on feedback

type=AVC msg=audit(1544626796.378:201): avc:  denied  { execute } for  pid=9973 comm="dbus-launch" name="dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1544626796.378:201): avc:  denied  { read open } for  pid=9973 comm="dbus-launch" path="/usr/bin/dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1544626796.378:201): avc:  denied  { execute_no_trans } for  pid=9973 comm="dbus-launch" path="/usr/bin/dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1544626796.378:201): avc:  denied  { map } for  pid=9973 comm="dbus-daemon" path="/usr/bin/dbus-daemon" dev="dm-1" ino=6695040 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:dbusd_exec_t:s0 tclass=file permissive=1
type=AVC msg=audit(1546551459.112:208): avc:  denied  { getcap } for pid=6275 comm="dbus-daemon" scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tclass=process permissive=1

type=AVC msg=audit(1546551459.116:209): avc:  denied  { read } for pid=6275 comm="dbus-daemon" name="995" dev="tmpfs" ino=35210 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:systemd_logind_var_run_t:s0 tclass=file permissive=1
type=AVC msg=audit(1546551459.116:209): avc:  denied  { open } for pid=6275 comm="dbus-daemon" path="/run/systemd/users/995" dev="tmpfs" ino=35210 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:systemd_logind_var_run_t:s0 tclass=file permissive=1
type=AVC msg=audit(1546551459.116:210): avc:  denied  { getattr } for pid=6275 comm="dbus-daemon" path="/run/systemd/users/995" dev="tmpfs" ino=35210 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:systemd_logind_var_run_t:s0 tclass=file permissive=1

Signed-off-by: Dave Sugar <dsugar@tresys.com>
This commit is contained in:
Sugar, David 2019-01-06 18:31:42 +00:00 committed by Chris PeBenito
parent 6780e6d2e2
commit 2791589f9e
2 changed files with 26 additions and 0 deletions
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19
policy/modules/services/dbus.if
View File

@ -17,6 +17,25 @@ interface(`dbus_stub',`
')
')
########################################
## <summary>
## Execute dbus in the caller domain.
## </summary>
## <param name="domain">
## <summary>
## Domain allowed access.
## </summary>
## </param>
#
interface(`dbus_exec',`
gen_require(`
type dbusd_exec_t;
')
corecmd_search_bin($1)
can_exec($1, dbusd_exec_t)
')
########################################
## <summary>
## Role access for dbus.

7
policy/modules/services/xserver.te
View File

@ -566,12 +566,19 @@ optional_policy(`
')
optional_policy(`
allow xdm_t self:process getcap;
dbus_exec(xdm_t)
dbus_system_bus_client(xdm_t)
dbus_connect_system_bus(xdm_t)
optional_policy(`
accountsd_dbus_chat(xdm_t)
')
optional_policy(`
systemd_read_logind_pids(xdm_t)
')
')
optional_policy(`