Bug 671898

SELinux is preventing /usr/bin/python from using the 'execstack' accesses on a process.

*****  Plugin allow_execstack (53.1 confidence) suggests  ********************

If you do not think /usr/bin/python should need to map stack memory that is both writable and executable.
Then you need to report a bug. This is a potentially dangerous access.
Do
contact your security administrator and report this issue.

*****  Plugin catchall_boolean (42.6 confidence) suggests  *******************

If you want to allow unconfined executables to make their stack executable.  This should never, ever be necessary. Probably indicates a badly coded executable, but could indicate an attack. This executable should be reported in bugzilla
Then you must tell SELinux about this by enabling the 'allow_execstack' boolean.
Do
setsebool -P allow_execstack 1

*****  Plugin catchall (5.76 confidence) suggests  ***************************

If you believe that python should be allowed execstack access on processes labeled unconfined_t 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 wavparse2:sink /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

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                Unknown [ process ]
Source                        wavparse2:sink
Source Path                   /usr/bin/python
Port                          <Desconocido>
Host                          (removed)
Source RPM Packages           mencoder-1.0-0.119.20100703svn.fc14
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.7-20.fc14
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux (removed) 2.6.35.10-74.fc14.i686 #1 SMP Thu Dec
                              23 16:17:40 UTC 2010 i686 i686
Alert Count                   13886
First Seen                    mié 29 dic 2010 17:36:18 MST
Last Seen                     sáb 22 ene 2011 10:29:41 MST
Local ID                      79fc59b9-eba6-4c55-9ab6-c8862e8613b7

Raw Audit Messages
type=AVC msg=audit(1295717381.681:25387): avc:  denied  { execstack } for  pid=2594 comm="mencoder" scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tclass=process

wavparse2:sink,unconfined_t,unconfined_t,process,execstack
type=SYSCALL msg=audit(1295717381.681:25387): arch=i386 syscall=mprotect success=no exit=EACCES a0=bff9b000 a1=1000 a2=1000007 a3=bff9b260 items=0 ppid=2593 pid=2594 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=pts0 ses=1 comm=mencoder exe=/usr/bin/mencoder subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)
wavparse2:sink,unconfined_t,unconfined_t,process,execstack

#============= unconfined_t ==============
#!!!! This avc can be allowed using the boolean 'allow_execstack'

allow unconfined_t self:process execstack;