Summary:

SELinux is preventing firefox (mozilla_t) "execmem" to <Unknown> (mozilla_t).

Detailed Description:

SELinux denied access requested by firefox. The current boolean settings do not
allow this access. If you have not setup firefox to require this access this may
signal an intrusion attempt. If you do intend this access you need to change the
booleans on this system to allow the access.

Allowing Access:

Confined processes can be configured to to run requiring different access,
SELinux provides booleans to allow you to turn on/off access as needed. The
boolean allow_execmem is set incorrectly.
Boolean Description:
Allow unconfined executables to map a memory region as both executable and
writable, this is dangerous and the executable should be reported in bugzilla")


Fix Command:

# setsebool -P allow_execmem 1

Additional Information:

Source Context                xguest_u:xguest_r:mozilla_t:s0
Target Context                xguest_u:xguest_r:mozilla_t:s0
Target Objects                None [ process ]
Source                        firefox
Source Path                   /usr/lib/firefox-3.5.3/firefox
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           firefox-3.5.4-1.fc11
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.12-85.fc11
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   catchall_boolean
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.30.9-90.fc11.i686.PAE #1 SMP Sat Oct 17
                              11:24:32 EDT 2009 i686 i686
Alert Count                   56
First Seen                    St 28. október 2009, 13:18:12 CET
Last Seen                     Št 29. október 2009, 10:42:23 CET
Local ID                      8a9c383b-3c4a-4b64-add8-6147702f2bea
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1256809343.340:47): avc:  denied  { execmem } for  pid=2539 comm="firefox" scontext=xguest_u:xguest_r:mozilla_t:s0 tcontext=xguest_u:xguest_r:mozilla_t:s0 tclass=process

node=(removed) type=SYSCALL msg=audit(1256809343.340:47): arch=40000003 syscall=192 success=no exit=-13 a0=0 a1=2000 a2=7 a3=22 items=0 ppid=2524 pid=2539 auid=501 uid=501 gid=501 euid=501 suid=501 fsuid=501 egid=501 sgid=501 fsgid=501 tty=(none) ses=1 comm="firefox" exe="/usr/lib/firefox-3.5.4/firefox" subj=xguest_u:xguest_r:mozilla_t:s0 key=(null)



Hash String generated from  selinux-policy-3.6.12-85.fc11,catchall_boolean,firefox,mozilla_t,mozilla_t,process,execmem
audit2allow suggests:

#============= mozilla_t ==============
allow mozilla_t self:process execmem;