Bug 708710 - SELinux is preventing /usr/sbin/lxdm-binary from 'read' accesses on the file .dmrc.
Summary: SELinux is preventing /usr/sbin/lxdm-binary from 'read' accesses on the file ...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: selinux-policy
Version: rawhide
Hardware: i386
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Miroslav Grepl
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: setroubleshoot_trace_hash:89e6888a858...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-05-29 01:11 UTC by Aníbal Deboni Neto
Modified: 2011-11-02 03:36 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-05-29 09:04:16 UTC
Type: ---


Attachments (Terms of Use)

Description Aníbal Deboni Neto 2011-05-29 01:11:24 UTC
SELinux is preventing /usr/sbin/lxdm-binary from 'read' accesses on the file .dmrc.

*****  Plugin file (36.8 confidence) suggests  *******************************

If you think this is caused by a badly mislabeled machine.
Then you need to fully relabel.
Do
touch /.autorelabel; reboot

*****  Plugin file (36.8 confidence) suggests  *******************************

If you think this is caused by a badly mislabeled machine.
Then you need to fully relabel.
Do
touch /.autorelabel; reboot

*****  Plugin catchall_labels (23.2 confidence) suggests  ********************

If you want to allow lxdm-binary to have read access on the .dmrc file
Then you need to change the label on .dmrc
Do
# semanage fcontext -a -t FILE_TYPE '.dmrc'
where FILE_TYPE is one of the following: selinux_config_t, bin_t, cert_t, lib_t, usr_t, var_t, wtmp_t, xserver_exec_t, default_context_t, pam_console_exec_t, ld_so_cache_t, hwdata_t, locale_t, sssd_public_t, var_auth_t, etc_t, fonts_t, dbusd_exec_t, user_fonts_t, proc_t, user_tmpfs_t, sysfs_t, xdm_t, loadkeys_exec_t, krb5_keytab_t, xdm_dbusd_t, xdm_spool_t, fonts_cache_t, system_cronjob_var_lib_t, ssh_agent_exec_t, plymouthd_var_log_t, policykit_var_lib_t, crack_db_t, user_tmp_t, ssh_home_t, xserver_tmpfs_t, krb5_conf_t, iceauth_home_t, plymouth_exec_t, xauth_exec_t, xauth_home_t, auth_cache_t, alsa_etc_rw_t, xdm_tmpfs_t, sysctl_dev_t, sysctl_net_t, rpm_exec_t, security_t, pulseaudio_exec_t, mount_exec_t, gconf_etc_t, shell_exec_t, consolekit_log_t, pam_exec_t, abrt_var_run_t, krb5_home_t, user_cron_spool_t, proc_afs_t, oddjob_mkhomedir_exec_t, xserver_log_t, dbusd_etc_t, user_home_t, var_lib_t, updpwd_exec_t, xdm_tmp_t, userdomain, xserver_t, fusermount_exec_t, configfile, domain, sysctl_crypto_t, rpm_var_cache_t, faillog_t, lastlog_t, proc_net_t, var_log_t, chkpwd_exec_t, policykit_reload_t, xdm_etc_t, xdm_log_t, gnome_home_type, hostname_exec_t, abrt_t, samba_var_t, initrc_var_run_t, lib_t, gkeyringd_exec_t, pam_var_run_t, rpm_var_lib_t, xdm_var_lib_t, xdm_var_run_t, net_conf_t, init_exec_t, afs_cache_t, abrt_helper_exec_t, etc_runtime_t, anon_inodefs_t, gconf_home_t, openct_var_run_t, sysctl_kernel_t, config_usr_t, ld_so_t, pcscd_var_run_t, udev_var_run_t, alsa_exec_t, xkb_var_lib_t, shutdown_exec_t, consoletype_exec_t, xdm_rw_etc_t, accountsd_var_lib_t, textrel_shlib_t, xdm_exec_t, xdm_home_t, xdm_lock_t, pam_var_console_t, rpm_script_tmp_t, system_dbusd_var_lib_t, policykit_auth_exec_t, cgroup_t, krb5_host_rcache_t, cert_t, init_t, security_t, systemd_systemctl_exec_t, net_conf_t, file_context_t, shell_exec_t, xsession_exec_t. 
Then execute: 
restorecon -v '.dmrc'


*****  Plugin catchall (5.04 confidence) suggests  ***************************

If you believe that lxdm-binary should be allowed read access on the .dmrc file by default.
Then you should report this as a bug.
You can generate a local policy module to allow this access.
Do
allow this access for now by executing:
# grep lxdm-binary /var/log/audit/audit.log | audit2allow -M mypol
# semodule -i mypol.pp

Additional Information:
Source Context                system_u:system_r:xdm_t:s0-s0:c0.c1023
Target Context                system_u:object_r:file_t:s0
Target Objects                .dmrc [ file ]
Source                        lxdm-binary
Source Path                   /usr/sbin/lxdm-binary
Port                          <Unknown>
Host                          (removed)
Source RPM Packages           lxdm-0.3.0-4.fc15
Target RPM Packages           
Policy RPM                    selinux-policy-3.9.16-24.fc15
Selinux Enabled               True
Policy Type                   targeted
Enforcing Mode                Enforcing
Host Name                     (removed)
Platform                      Linux z.io.n 2.6.38.6-26.rc1.fc15.i686 #1 SMP Mon
                              May 9 20:43:14 UTC 2011 i686 i686
Alert Count                   4
First Seen                    Sat 28 May 2011 09:01:34 PM BRT
Last Seen                     Sat 28 May 2011 09:12:41 PM BRT
Local ID                      f2d978fd-3bcb-4782-81b6-5376d3867e7f

Raw Audit Messages
type=AVC msg=audit(1306627961.223:90): avc:  denied  { read } for  pid=1398 comm="lxdm-binary" name=".dmrc" dev=sda6 ino=1267 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file


type=SYSCALL msg=audit(1306627961.223:90): arch=i386 syscall=open success=no exit=EACCES a0=8b35140 a1=8000 a2=0 a3=8b35140 items=0 ppid=1 pid=1398 auid=500 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=500 fsgid=0 tty=(none) ses=2 comm=lxdm-binary exe=/usr/sbin/lxdm-binary subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null)

Hash: lxdm-binary,xdm_t,file_t,file,read

audit2allow

#============= xdm_t ==============
allow xdm_t file_t:file read;

audit2allow -R

#============= xdm_t ==============
allow xdm_t file_t:file read;

Comment 1 Dominick Grift 2011-05-29 05:42:26 UTC
You have a labelling issue. Please make sure that you have policycoreutils-restorecond installed. Relogin to your session after it is installed and restore the context of your home directories manually: restorecon -R -v ~.

A file called .dmrc at inode 1267 on device sda6 has no file context. (Have you migrated to Fedora from a distribution that does not support SELinux or are you sharing the partition mounted on your home directory with distributions that do not suppport SELinux?).

run "find / -inum 1267" to find the file .dmrc

Comment 2 Miroslav Grepl 2011-05-29 09:04:16 UTC
Did you add a disk?

You need to run

# restorecon -R -v /home


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