Bug 594075

Summary:

SELinux is preventing /usr/sbin/httpd from loading
/usr/local/zend/lib/apache2/libphp5.so which requires text relocation.

Detailed Description:

The httpd application attempted to load /usr/local/zend/lib/apache2/libphp5.so
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/local/zend/lib/apache2/libphp5.so to use relocation as a workaround, until
the library is fixed. Please file a bug report.

Allowing Access:

If you trust /usr/local/zend/lib/apache2/libphp5.so to run correctly, you can
change the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/usr/local/zend/lib/apache2/libphp5.so'" 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/local/zend/lib/apache2/libphp5.so'"

Fix Command:

chcon -t textrel_shlib_t '/usr/local/zend/lib/apache2/libphp5.so'

Additional Information:

Source Context                system_u:system_r:httpd_t:s0
Target Context                system_u:object_r:lib_t:s0
Target Objects                /usr/local/zend/lib/apache2/libphp5.so [ file ]
Source                        httpd
Source Path                   /usr/sbin/httpd
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           httpd-2.2.14-1.fc12
Target RPM Packages           mod-php-5.2-apache2-zend-server-5.2.13-14
Policy RPM                    selinux-policy-3.6.32-114.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.32.11-99.fc12.i686.PAE #1 SMP Mon Apr 5
                              16:15:03 EDT 2010 i686 i686
Alert Count                   1
First Seen                    Fri 21 May 2010 05:40:56 AM MYT
Last Seen                     Fri 21 May 2010 05:40:56 AM MYT
Local ID                      0af74b19-a244-4e86-83ac-556e817577bf
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1274391656.266:6): avc:  denied  { execmod } for  pid=1650 comm="httpd" path="/usr/local/zend/lib/apache2/libphp5.so" dev=sda1 ino=263889 scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1274391656.266:6): arch=40000003 syscall=125 success=no exit=-13 a0=4666000 a1=5d8000 a2=5 a3=bff5aa80 items=0 ppid=1649 pid=1650 auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4294967295 comm="httpd" exe="/usr/sbin/httpd" subj=system_u:system_r:httpd_t:s0 key=(null)



Hash String generated from  allow_execmod,httpd,httpd_t,lib_t,file,execmod
audit2allow suggests:

#============= httpd_t ==============
allow httpd_t lib_t:file execmod;