Bug 495097

Description of problem:


Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:
Summary:

SELinux is preventing mixer_applet2 from loading
/usr/lib/i686/libavutil.so.49.10.0 which requires text relocation.

Detailed Description:

The mixer_applet2 application attempted to load
/usr/lib/i686/libavutil.so.49.10.0 which requires text relocation. This is a
potential security problem. Most libraries do not need this permission.
Libraries are sometimes coded incorrectly and request this permission. The
SELinux Memory Protection Tests
(http://people.redhat.com/drepper/selinux-mem.html) web page explains how to
remove this requirement. You can configure SELinux temporarily to allow
/usr/lib/i686/libavutil.so.49.10.0 to use relocation as a workaround, until the
library is fixed. Please file a bug report
(http://bugzilla.redhat.com/bugzilla/enter_bug.cgi) against this package.

Allowing Access:

If you trust /usr/lib/i686/libavutil.so.49.10.0 to run correctly, you can change
the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/usr/lib/i686/libavutil.so.49.10.0'" You must also change the default file
context files on the system in order to preserve them even on a full relabel.
"semanage fcontext -a -t textrel_shlib_t '/usr/lib/i686/libavutil.so.49.10.0'"

Fix Command:

chcon -t textrel_shlib_t '/usr/lib/i686/libavutil.so.49.10.0'

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_t:s0
Target Context                system_u:object_r:lib_t:s0
Target Objects                /usr/lib/i686/libavutil.so.49.10.0 [ file ]
Source                        gnome-settings-
Source Path                   /usr/libexec/gnome-settings-daemon
Port                          <Unknown>
Host                          christoper.localdomain
Source RPM Packages           gnome-applets-2.24.3.1-1.fc10
Target RPM Packages           ffmpeg-libs-0.4.9-0.54.20080908.fc10
Policy RPM                    selinux-policy-3.5.13-48.fc10
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     christoper.localdomain
Platform                      Linux christoper.localdomain
                              2.6.27.19-170.2.35.fc10.i686 #1 SMP Mon Feb 23
                              13:21:22 EST 2009 i686 i686
Alert Count                   63
First Seen                    Wed 11 Mar 2009 07:11:20 PM EDT
Last Seen                     Wed 25 Mar 2009 04:03:29 PM EDT
Local ID                      66afa80f-2ba3-4f08-b357-9ff744417770
Line Numbers                  

Raw Audit Messages            

node=christoper.localdomain type=AVC msg=audit(1238011409.680:17): avc:  denied  { execmod } for  pid=2529 comm="mixer_applet2" path="/usr/lib/i686/libavutil.so.49.10.0" dev=sda3 ino=196666 scontext=unconfined_u:unconfined_r:unconfined_t:s0 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=christoper.localdomain type=SYSCALL msg=audit(1238011409.680:17): arch=40000003 syscall=125 success=no exit=-13 a0=f35000 a1=9000 a2=5 a3=bf9bc2a0 items=0 ppid=2514 pid=2529 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="mixer_applet2" exe="/usr/libexec/mixer_applet2" subj=unconfined_u:unconfined_r:unconfined_t:s0 key=(null)