Bug 751555

Description of problem:
audit logs show a denial for crond_t every 10 minutes

Version-Release number of selected component (if applicable):
3.7.19-93.el6_1.7.noarch

How reproducible:
always

Steps to Reproduce:
1. enable tty auditing in system-auth for the root user
2. let cron run
3.
  
Actual results:
audit messages

Expected results:
no audit messages

Additional info:
cron pam.d file:
auth       sufficient pam_rootok.so
auth       required   pam_env.so
auth       include    system-auth
account    required   pam_access.so
account    include    system-auth
session    required   pam_loginuid.so
session    include    system-auth

system-auth pam.d file:

auth        required      pam_env.so
auth        required      pam_faillock.so preauth silent audit deny=5
auth        sufficient    pam_unix.so nullok try_first_pass
auth        requisite     pam_succeed_if.so uid >= 500 quiet
auth        sufficient    pam_sss.so use_first_pass
auth        [default=die] pam_faillock.so authfail audit deny=5
auth        required      pam_deny.so

account     required      pam_faillock.so
account     required      pam_unix.so broken_shadow
account     sufficient    pam_localuser.so
account     sufficient    pam_succeed_if.so uid < 500 quiet
account     [default=bad success=ok user_unknown=ignore] pam_sss.so
account     required      pam_permit.so

password    requisite     pam_cracklib.so try_first_pass retry=3 maxrepeats=3 minlen=12 lcredit=-2 ucredit=-2 dcredit=-2 ocredit=-2    difok=5
password    sufficient    pam_unix.so sha512 shadow nullok try_first_pass use_authtok
password    sufficient    pam_sss.so use_authtok
password    required      pam_deny.so

session     optional      pam_keyinit.so revoke
session     required      pam_limits.so
session     required      pam_tty_audit.so disable=* enable=root
session     optional      pam_oddjob_mkhomedir.so
session     [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session     required      pam_unix.so
session     optional      pam_sss.so