Bug 542418

Summary:

SELinux is preventing /opt/google/picasa/3.0/wine/bin/wine-preloader from
loading /opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.so which requires text
relocation.

Detailed Description:

The wineboot.exe application attempted to load
/opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.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
/opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.so to use relocation as a
workaround, until the library is fixed. Please file a bug report.

Allowing Access:

If you trust /opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.so to run
correctly, you can change the file context to textrel_shlib_t. "chcon -t
textrel_shlib_t '/opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.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
'/opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.so'"

Fix Command:

chcon -t textrel_shlib_t '/opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.so'

Additional Information:

Source Context                unconfined_u:system_r:rpm_script_t:s0-s0:c0.c1023
Target Context                system_u:object_r:lib_t:s0
Target Objects                /opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.
                              so [ file ]
Source                        wineboot.exe
Source Path                   /opt/google/picasa/3.0/wine/bin/wine-preloader
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           picasa-3.0.5744-02
Target RPM Packages           picasa-3.0.5744-02
Policy RPM                    selinux-policy-3.6.32-46.fc12
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     (removed)
Platform                      Linux (removed)
                              2.6.31.5-127.fc12.x86_64 #1 SMP Sat Nov 7 21:11:14
                              EST 2009 x86_64 x86_64
Alert Count                   1
First Seen                    Sat 28 Nov 2009 01:49:29 AM EST
Last Seen                     Sat 28 Nov 2009 01:49:29 AM EST
Local ID                      66ace1e6-8529-4a03-9f2b-749783db9fb6
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1259390969.590:51067): avc:  denied  { execmod } for  pid=18369 comm="wineboot.exe" path="/opt/google/picasa/3.0/wine/lib/wine/cryptdlg.dll.so" dev=dm-0 ino=473438 scontext=unconfined_u:system_r:rpm_script_t:s0-s0:c0.c1023 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1259390969.590:51067): arch=40000003 syscall=125 success=no exit=-13 a0=6094e000 a1=1000 a2=7 a3=4d items=0 ppid=1 pid=18369 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=1 comm="wineboot.exe" exe="/opt/google/picasa/3.0/wine/bin/wine-preloader" subj=unconfined_u:system_r:rpm_script_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  selinux-policy-3.6.32-46.fc12,allow_execmod,wineboot.exe,rpm_script_t,lib_t,file,execmod
audit2allow suggests:

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