FC5: Problem with acroread and CISCO VPN

[Stephan Groß]

On Thursday 27 April 2006 16:43, Paul Howarth wrote:
> Tom Diehl wrote:
> > On Thu, 27 Apr 2006, Paul Howarth wrote:
> >> On Thu, 2006-04-27 at 08:58 +0200, Stephan Groß wrote:
> >>> On Thursday 27 April 2006 07:39, Klaus Steinberger wrote:
> >>>
> >>> Hi,
> >>>
> >>>> in Fedora Core 5 selinux blocks execution of the CISCO vpnclient, as
> >>>> well as acroread:
> >>>>
> >>>> [klaus.steinberger at noname ~]$ acroread
> >>>> /usr/lib/acroread/Reader/intellinux/bin/acroread: error while loading
> >>>> shared libraries: /usr/lib/acroread/Reader/intellinux/lib/libJP2K.so:
> >>>> cannot restore segment prot after reloc: Permission denied
> >>>> [klaus.steinberger at noname ~]$
> >>>
> >>> after some googling I found following advice that worked for me to
> >>> enable acroread again:
> >>>
> >>> 1. Start "System" > "Administration" > "Security Level and Firewall"
> >>> 2. On the "SELinux" tab click on "Modify SELinux Policy >
> >>> Compatibility" 3. Tick the check box next to "Allow the use of shared
> >>> libraries with Text Relocation".
> >>
> >> A better fix is to label the acroread files correctly, which only
> >> "opens" the protection for acroread and not every process on the system:
> >>
> >> I believe you need:
> >> # chcon -t textrel_shlib_t \
> >> 	/usr/lib/acroread/Reader/intellinux/lib/*.so \
> >> 	/usr/lib/acroread/Reader/intellinux/SPPlugins/*.apl \
> >> 	/usr/lib/acroread/Reader/intellinux/plug_ins/*.api
> >
> > If I relabel as suggested above, what happens the next time the
> > filesystem is relabeled. If as I suspect they get relabeled back to the
> > previous settings, what is the correct way to make the changes permanent?
>
> It can be done using semanage to add new file context objects. However,
> I believe the required entries are *supposed* to be in the main policy
> package:
>
> # semanage fcontext -l | grep -Ei 'adobe|intellinux'
> /usr/(local/)?Adobe/.*\.api                        regular file
> system_u:object_r:texrel_shlib_t:s0
> /usr/(local/)?Adobe/(.*/)?lib/[^/]*\.so(\.[^/]*)*  regular file
> system_u:object_r:texrel_shlib_t:s0
> /usr/(.*/)?intellinux/SPPlugins/ADMPlugin\.apl     regular file
> system_u:object_r:textrel_shlib_t:s0
> /usr/(local/)?Adobe/(.*/)?intellinux/nppdf\.so     regular file
> system_u:object_r:texrel_shlib_t:s0
> # rpm -q selinux-policy
> selinux-policy-2.2.34-3.fc5
>
> If you have the latest policy and "restorecon -vR /path/to/acroread"
> doesn't set the right context, raise it here and mention which files
> aren't getting set to textrel_shlib_t. Hopefully it will get fixed so
> that this issue stops cropping up on fedora-list every day like it seems
> to at the moment.

I have the above mentioned selinux-policy-2.2.34-3.fc5 installed. However, a 
"restorecon -vR /usr/local/Adobe" results in

"/etc/selinux/targeted/contexts/files/file_contexts: Multiple different 
specifications for /opt  (system_u:object_r:home_root_t and 
system_u:object_r:usr_t).
/etc/selinux/targeted/contexts/files/file_contexts: Multiple different 
specifications for /opt  (system_u:object_r:home_root_t and 
system_u:object_r:usr_t)."

and no file contexts changed. I am clueless about the details of selinux. Is 
this a bug in the policy script or might this be a failure in my 
installation. Don't know if it matters but I upgraded from FC4.

Regards,
Stephan.