Bug 611373

Summary:

SELinux is preventing /usr/local/lexmark/lxk08/bin/printdriver from loading
/usr/local/lexmark/lxk08/lib/libhdctransport.so which requires text relocation.

Detailed Description:

The printdriver application attempted to load
/usr/local/lexmark/lxk08/lib/libhdctransport.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/lexmark/lxk08/lib/libhdctransport.so to use relocation as a
workaround, until the library is fixed. Please file a bug report.

Allowing Access:

If you trust /usr/local/lexmark/lxk08/lib/libhdctransport.so to run correctly,
you can change the file context to textrel_shlib_t. "chcon -t textrel_shlib_t
'/usr/local/lexmark/lxk08/lib/libhdctransport.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/lexmark/lxk08/lib/libhdctransport.so'"

Fix Command:

chcon -t textrel_shlib_t '/usr/local/lexmark/lxk08/lib/libhdctransport.so'

Additional Information:

Source Context                unconfined_u:system_r:cupsd_t:s0-s0:c0.c1023
Target Context                system_u:object_r:lib_t:s0
Target Objects                /usr/local/lexmark/lxk08/lib/libhdctransport.so [
                              file ]
Source                        printdriver
Source Path                   /usr/local/lexmark/lxk08/bin/printdriver
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           lexmark-inkjet-08-driver-1.0-1
Target RPM Packages           lexmark-inkjet-08-driver-1.0-1
Policy RPM                    selinux-policy-3.7.19-28.fc13
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Plugin Name                   allow_execmod
Host Name                     (removed)
Platform                      Linux (removed) 2.6.33.5-124.fc13.x86_64 #1 SMP Fri Jun
                              11 09:38:12 UTC 2010 x86_64 x86_64
Alert Count                   8
First Seen                    Sun 04 Jul 2010 09:17:39 PM CDT
Last Seen                     Sun 04 Jul 2010 09:20:01 PM CDT
Local ID                      2e3b6b89-69d9-447a-b1ed-2e39e0d3b66e
Line Numbers                  

Raw Audit Messages            

node=(removed) type=AVC msg=audit(1278296401.252:233): avc:  denied  { execmod } for  pid=15022 comm="printdriver" path="/usr/local/lexmark/lxk08/lib/libhdctransport.so" dev=dm-1 ino=1067664 scontext=unconfined_u:system_r:cupsd_t:s0-s0:c0.c1023 tcontext=system_u:object_r:lib_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1278296401.252:233): arch=40000003 syscall=125 success=no exit=-13 a0=222000 a1=1a000 a2=5 a3=ffa60520 items=0 ppid=5057 pid=15022 auid=500 uid=4 gid=7 euid=4 suid=4 fsuid=4 egid=7 sgid=7 fsgid=7 tty=(none) ses=1 comm="printdriver" exe="/usr/local/lexmark/lxk08/bin/printdriver" subj=unconfined_u:system_r:cupsd_t:s0-s0:c0.c1023 key=(null)



Hash String generated from  allow_execmod,printdriver,cupsd_t,lib_t,file,execmod
audit2allow suggests:

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