Bug 624304

Summary: SELinux is preventing /usr/share/package-converter/Package-Converter from loading /home/aaronl/.tmpAppData/XDfibbo_libRBShell.so which requires text relocation.
Product: [Fedora] Fedora Reporter: Aaron Lippold <aaron.lippold>
Component: selinux-policyAssignee: Daniel Walsh <dwalsh>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 13CC: dwalsh, mgrepl
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard: setroubleshoot_trace_hash:cca5e385c5e4aba2fe1010a352509b78916dba1b861387880226b42d21b45502
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-08-16 08:04:24 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Aaron Lippold 2010-08-15 22:05:38 UTC
Summary:

SELinux is preventing /usr/share/package-converter/Package-Converter from
loading /home/aaronl/.tmpAppData/XDfibbo_libRBShell.so which requires text
relocation.

Detailed Description:

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

The Package-Convert application attempted to load
/home/aaronl/.tmpAppData/XDfibbo_libRBShell.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/aaronl/.tmpAppData/XDfibbo_libRBShell.so to use relocation as a
workaround, until the library is fixed. Please file a bug report.

Allowing Access:

If you trust /home/aaronl/.tmpAppData/XDfibbo_libRBShell.so to run correctly,
you can change the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/home/aaronl/.tmpAppData/XDfibbo_libRBShell.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/aaronl/.tmpAppData/XDfibbo_libRBShell.so'"

Fix Command:

chcon -t textrel_shlib_t '/home/aaronl/.tmpAppData/XDfibbo_libRBShell.so'

Additional Information:

Source Context                unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1
                              023
Target Context                unconfined_u:object_r:user_home_t:s0
Target Objects                /home/aaronl/.tmpAppData/XDfibbo_libRBShell.so [
                              file ]
Source                        Package-Convert
Source Path                   /usr/share/package-converter/Package-Converter
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           package-converter-3.0.0.2-2
Target RPM Packages           
Policy RPM                    selinux-policy-3.7.19-39.fc13
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Permissive
Plugin Name                   allow_execmod
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.33.6-147.2.4.fc13.i686 #1 SMP Fri Jul 23
                              17:27:40 UTC 2010 i686 i686
Alert Count                   2
First Seen                    Fri 06 Aug 2010 01:21:02 AM EDT
Last Seen                     Fri 06 Aug 2010 01:25:03 AM EDT
Local ID                      a3751d6a-3e27-4524-aba1-03535ca52551
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1281072303.277:30079): avc:  denied  { execmod } for  pid=7932 comm="Package-Convert" path="/home/aaronl/.tmpAppData/XDfibbo_libRBShell.so" dev=dm-4 ino=262149 scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1281072303.277:30079): arch=40000003 syscall=125 success=yes exit=0 a0=197000 a1=19000 a2=5 a3=bfc1d850 items=0 ppid=1 pid=7932 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="Package-Convert" exe="/usr/share/package-converter/Package-Converter" subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  allow_execmod,Package-Convert,unconfined_t,user_home_t,file,execmod
audit2allow suggests:

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

allow unconfined_t user_home_t:file execmod;

Comment 1 Miroslav Grepl 2010-08-16 08:04:24 UTC
Either use the chcon command mentioned in the alert or turn off the check
altogether.