Description of problem:
SELinux is preventing firefox from making its memory writable and executable.

I'm running selinux is permissive mode, but for those who use 'strict mode' firefox can't be launched.

Version-Release number of selected component (if applicable):
libselinux-2.0.96-2.fc14.i686
libselinux-python-2.0.96-2.fc14.i686
libselinux-utils-2.0.96-2.fc14.i686
selinux-policy-3.8.5-1.fc14.noarch
selinux-policy-targeted-3.8.5-1.fc14.noarch


How reproducible:
Always

Steps to Reproduce:
1. Click on firefox icon or launch firefox from terminal 
2.
3.
  
Actual results:
SELinux show an alert.

Expected results:
SELinux doesn't show an alert.

Additional info:
Summary:

SELinux is preventing firefox from making its memory writable and executable.

Detailed Description:

[SELinux is in permissive mode. This access was not denied.]

The firefox application attempted to change the access protection of memory
(e.g., allocated using malloc). This is a potential security problem. Firefox is
probably not the problem here ,but one of its plugins. You could remove the
plugin and the app would no longer require the access. If you figure out which
plugin is causing the access request, please open a bug report on the plugin.

Allowing Access:

There are two ways to fix this problem, you can install the nsspluginwrapper
package, which will cause firefox to run its plugins under a separate process.
This process will allow the execmem access. This is the safest choice. You could
also turn off the allow_unconfined_nsplugin_transition boolean.
setsebool -P allow_unconfined_nsplugin_transition=0

Fix Command:

yum install nspluginwrapper

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Objects                None [ process ]
Source                        firefox
Source Path                   /usr/lib/firefox-3.6/firefox
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           firefox-3.6.4-2.fc14
Target RPM Packages           
Policy RPM                    selinux-policy-3.8.5-1.fc14
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Plugin Name                   firefox
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.35-0.2.rc3.git0.fc14.i686 #1 SMP Wed Jun 23
                              00:02:17 UTC 2010 i686 i686
Alert Count                   2
First Seen                    Sun 27 Jun 2010 10:06:33 AM CET
Last Seen                     Sun 27 Jun 2010 10:06:33 AM CET
Local ID                      73019537-da1c-4609-b4ac-40396d23b7a9
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1277629593.395:17270): avc:  denied  { execmem } for  pid=1967 comm="firefox" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process

node=(removed) type=SYSCALL msg=audit(1277629593.395:17270): arch=40000003 syscall=192 success=yes exit=115331072 a0=0 a1=10000 a2=7 a3=22 items=0 ppid=1950 pid=1967 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="firefox" exe="/usr/lib/firefox-3.6/firefox" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)