Bug 473177

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.4) Gecko/2008111217 Fedora/3.0.4-1.fc10 Firefox/3.0.4


Summary:

SELinux is preventing gnome-power-man from loading
/usr/lib/sse2/libpostproc.so.51.2.0 which requires text relocation.

Detailed Description:

The gnome-power-man application attempted to load
/usr/lib/sse2/libpostproc.so.51.2.0 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/sse2/libpostproc.so.51.2.0 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/sse2/libpostproc.so.51.2.0 to run correctly, you can
change the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/usr/lib/sse2/libpostproc.so.51.2.0'" 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/sse2/libpostproc.so.51.2.0'"

Fix Command:

chcon -t textrel_shlib_t '/usr/lib/sse2/libpostproc.so.51.2.0'

Additional Information:

Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:lib_t:s0
Target Objects                /usr/lib/sse2/libpostproc.so.51.2.0 [ file ]
Source                        gnome-power-man
Source Path                   /usr/bin/gnome-power-manager
Port                          <Unknown>
Host                          localhost.localdomain
Source RPM Packages           gnome-power-manager-2.24.1-3.fc10
Target RPM Packages           ffmpeg-libs-0.4.9-0.52.20080908.fc10
Policy RPM                    selinux-policy-3.5.13-18.fc10
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     localhost.localdomain
Platform                      Linux localhost.localdomain 2.6.27.5-117.fc10.i686
                              #1 SMP Tue Nov 18 12:19:59 EST 2008 i686 athlon
Alert Count                   5
First Seen                    Wed 26 Nov 2008 07:38:42 PM GMT
Last Seen                     Wed 26 Nov 2008 10:06:43 PM GMT
Local ID                      3bd5b415-36b8-46ea-81f4-255ce73675c5
Line Numbers                  

Raw Audit Messages            

node=localhost.localdomain type=AVC msg=audit(1227737203.380:5): avc:  denied  { execmod } for  pid=2329 comm="gnome-power-man" path="/usr/lib/sse2/libpostproc.so.51.2.0" dev=sda3 ino=4349964 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=localhost.localdomain type=SYSCALL msg=audit(1227737203.380:5): arch=40000003 syscall=125 success=no exit=-13 a0=41ae000 a1=9000 a2=5 a3=bfea9fc0 items=0 ppid=2326 pid=2329 auid=4294967295 uid=42 gid=42 euid=42 suid=42 fsuid=42 egid=42 sgid=42 fsgid=42 tty=(none) ses=4294967295 comm="gnome-power-man" exe="/usr/bin/gnome-power-manager" subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null)



Reproducible: Sometimes