Description of problem:
SELinux is preventing /usr/libexec/gstreamer-1.0/gst-plugin-scanner from using the 'dac_override' capabilities.

*****  Plugin dac_override (91.4 confidence) suggests  ***********************

If you want to help identify if domain needs this access or you have a file with the wrong permissions on your system
Then turn on full auditing to get path information about the offending file and generate the error again.
Do

Turn on full auditing
# auditctl -w /etc/shadow -p w
Try to recreate AVC. Then execute
# ausearch -m avc -ts recent
If you see PATH record check ownership/permissions on file, and fix it, 
otherwise report as a bugzilla.

*****  Plugin catchall (9.59 confidence) suggests  ***************************

If you believe that gst-plugin-scanner should have the dac_override capability 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 gst-plugin-scan /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023
Target Context                unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023
Target Objects                 [ capability ]
Source                        gst-plugin-scan
Source Path                   /usr/libexec/gstreamer-1.0/gst-plugin-scanner
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           totem-3.6.3-2.fc18.x86_64
Target RPM Packages           
Policy RPM                    selinux-policy-3.11.1-74.fc18.noarch
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Host Name                     (removed)
Platform                      Linux (removed) 3.7.6-201.fc18.x86_64 #1 SMP Mon
                              Feb 4 15:54:08 UTC 2013 x86_64 x86_64
Alert Count                   5
First Seen                    2013-02-10 02:08:42 IST
Last Seen                     2013-02-10 02:27:24 IST
Local ID                      f2c81908-a2bf-4179-895e-c7216d5619e3

Raw Audit Messages
type=AVC msg=audit(1360443444.219:345): avc:  denied  { dac_override } for  pid=2042 comm="totem-video-thu" capability=1  scontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 tclass=capability


type=SYSCALL msg=audit(1360443444.219:345): arch=x86_64 syscall=access success=yes exit=0 a0=7fff2cacef0f a1=4 a2=8 a3=7fff2cacbe64 items=0 ppid=1993 pid=2042 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 ses=2 tty=pts0 comm=totem-video-thu exe=/usr/bin/totem-video-thumbnailer subj=unconfined_u:unconfined_r:thumb_t:s0-s0:c0.c1023 key=(null)

Hash: gst-plugin-scan,thumb_t,thumb_t,capability,dac_override

audit2allow

#============= thumb_t ==============
allow thumb_t self:capability dac_override;

audit2allow -R

#============= thumb_t ==============
allow thumb_t self:capability dac_override;


Additional info:
hashmarkername: setroubleshoot
kernel:         3.7.6-201.fc18.x86_64
type:           libreport

Potential duplicate: bug 823210