Description of problem:
SELinux is preventing /usr/bin/Xorg from 'read' accesses on the chr_file urandom.

*****  Plugin catchall_boolean (47.5 confidence) suggests  *******************

If you want to allow users to resolve user passwd entries directly from ldap rather then using a sssd server
Then you must tell SELinux about this by enabling the 'authlogin_nsswitch_use_ldap' boolean.
You can read 'None' man page for more details.
Do
setsebool -P authlogin_nsswitch_use_ldap 1

*****  Plugin catchall_boolean (47.5 confidence) suggests  *******************

If you want to enable reading of urandom for all domains.
Then you must tell SELinux about this by enabling the 'global_ssp' boolean.
You can read 'None' man page for more details.
Do
setsebool -P global_ssp 1

*****  Plugin catchall (6.38 confidence) suggests  ***************************

If you believe that Xorg should be allowed read access on the urandom chr_file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep Xorg /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:xserver_t:s0-s0:c0.c1023
Target Context                system_u:object_r:urandom_device_t:s0
Target Objects                urandom [ chr_file ]
Source                        Xorg
Source Path                   /usr/bin/Xorg
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           xorg-x11-server-Xorg-1.13.3-3.fc18.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.11.1-96.fc18.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 3.9.4-200.fc18.x86_64 #1 SMP Fri
                              May 24 20:10:49 UTC 2013 x86_64 x86_64
Alert Count                   1
First Seen                    2013-05-29 13:50:03 PDT
Last Seen                     2013-05-29 13:50:03 PDT
Local ID                      6421cab6-f9cf-4a75-9d9c-3c1b2ffd18ee

Raw Audit Messages
type=AVC msg=audit(1369860603.382:261): avc:  denied  { read } for  pid=994 comm="Xorg" name="urandom" dev="devtmpfs" ino=1033 scontext=system_u:system_r:xserver_t:s0-s0:c0.c1023 tcontext=system_u:object_r:urandom_device_t:s0 tclass=chr_file


type=SYSCALL msg=audit(1369860603.382:261): arch=x86_64 syscall=open success=no exit=EACCES a0=7f695697599d a1=0 a2=1b6 a3=238 items=0 ppid=764 pid=994 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=4294967295 tty=tty1 comm=Xorg exe=/usr/bin/Xorg subj=system_u:system_r:xserver_t:s0-s0:c0.c1023 key=(null)

Hash: Xorg,xserver_t,urandom_device_t,chr_file,read

audit2allow

#============= xserver_t ==============
#!!!! This avc can be allowed using one of the these booleans:
#     authlogin_nsswitch_use_ldap, global_ssp

allow xserver_t urandom_device_t:chr_file read;

audit2allow -R
require {
	type xserver_t;
}

#============= xserver_t ==============
dev_read_urand(xserver_t)


Additional info:
reporter:       libreport-2.1.4
hashmarkername: setroubleshoot
kernel:         3.9.4-200.fc18.x86_64
type:           libreport