Bug 538666

Summary:

SELinux is preventing /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/bin/java from
loading /home/liveuser/.juniper_networks/network_connect/libncui.so which
requires text relocation.

Detailed Description:

The java application attempted to load
/home/liveuser/.juniper_networks/network_connect/libncui.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
/home/liveuser/.juniper_networks/network_connect/libncui.so to use relocation as
a workaround, until the library is fixed. Please file a bug report.

Allowing Access:

If you trust /home/liveuser/.juniper_networks/network_connect/libncui.so to run
correctly, you can change the file context to textrel_shlib_t. "chcon -t
textrel_shlib_t '/home/liveuser/.juniper_networks/network_connect/libncui.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
'/home/liveuser/.juniper_networks/network_connect/libncui.so'"

Fix Command:

chcon -t textrel_shlib_t
'/home/liveuser/.juniper_networks/network_connect/libncui.so'

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_execmem_t:s0-
                              s0:c0.c1023
Target Context                unconfined_u:object_r:user_home_t:s0
Target Objects                /home/liveuser/.juniper_networks/network_connect/l
                              ibncui.so [ file ]
Source                        java
Source Path                   /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/bin/ja
                              va
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           java-1.6.0-openjdk-1.6.0.0-31.b16.fc12
Target RPM Packages           
Policy RPM                    selinux-policy-3.6.32-41.fc12
Selinux Enabled               True
Policy Type                   targeted
MLS Enabled                   True
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     (removed)
Platform                      Linux (removed) 2.6.31.5-127.fc12.i686
                              #1 SMP Sat Nov 7 21:41:45 EST 2009 i686 i686
Alert Count                   1
First Seen                    Thu 19 Nov 2009 01:05:19 AM EST
Last Seen                     Thu 19 Nov 2009 01:05:19 AM EST
Local ID                      98e1f936-82c8-478a-b195-d5d025586ddb
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1258610719.779:15): avc:  denied  { execmod } for  pid=2513 comm="java" path="/home/liveuser/.juniper_networks/network_connect/libncui.so" dev=dm-2 ino=85931 scontext=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1258610719.779:15): arch=40000003 syscall=125 success=no exit=-13 a0=36a2000 a1=167000 a2=5 a3=369f630 items=0 ppid=2426 pid=2513 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="java" exe="/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre/bin/java" subj=unconfined_u:unconfined_r:unconfined_execmem_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  selinux-policy-3.6.32-41.fc12,allow_execmod,java,unconfined_execmem_t,user_home_t,file,execmod
audit2allow suggests:

#============= unconfined_execmem_t ==============
allow unconfined_execmem_t user_home_t:file execmod;