On Thu, 2012-11-08 at 15:59 -0500, Matthew Miller wrote:

I have been running this with SELinux disabled, but I'm trying to be A Better Person by running in enforcing mode all the time. I got the following alert while running appliace-creator. What the heck is "run lnk_file"?

it is probably the /var/run symlink to /run

Looks like it is mislabeled (currently var_t; should be var_run_t)

See if restorecon -R -v -F /var/run resets it to var_run_t

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SELinux is preventing /usr/sbin/useradd from read access on the lnk_file run.

***** Plugin catchall_labels (83.8 confidence) suggests

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If you want to allow useradd to have read access on the run lnk_file Then you need to change the label on run Do # semanage fcontext -a -t FILE_TYPE 'run' where FILE_TYPE is one of the following: cert_t, selinux_config_t, # user_home_dir_t, device_t, device_t, devlog_t, locale_t, # httpd_user_content_type, security_t, etc_t, ld_so_t, proc_t, mail_spool_t, # device_t, abrt_t, bin_t, etc_t, base_ro_file_type, lib_t, man_t, # etc_runtime_t, root_t, tmp_t, bin_t, cert_t, var_run_t, tmp_t, tmp_t, # selinux_login_config_t, httpd_user_script_exec_type, textrel_shlib_t, # etc_runtime_t, var_run_t, selinux_config_t, rpm_script_tmp_t, security_t, # proc_t, net_conf_t, security_t, etc_t, etc_runtime_t, var_run_t, bin_t, # var_run_t, var_run_t, useradd_t, usr_t, user_home_type, domain, # home_root_t, etc_t, var_run_t, var_run_t. Then execute: restorecon -v 'run'

***** Plugin catchall (17.1 confidence) suggests

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If you believe that useradd should be allowed read access on the run lnk_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 useradd /var/log/audit/audit.log | audit2allow -M mypol # semodule -i mypol.pp

Additional Information: Source Context unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 Target Context unconfined_u:object_r:var_t:s0 Target Objects run [ lnk_file ] Source useradd Source Path /usr/sbin/useradd Port <Unknown> Host ubik.home.mkmiller.org Source RPM Packages shadow-utils-4.1.5.1-1.fc18.x86_64 Target RPM Packages filesystem-3.1-2.fc18.x86_64 Policy RPM selinux-policy-3.11.1-50.fc18.noarch Selinux Enabled True Policy Type targeted Enforcing Mode Enforcing Host Name ubik.home.mkmiller.org Platform Linux ubik.home.mkmiller.org 3.6.5-2.fc18.x86_64 #1 SMP Thu Nov 1 00:39:17 UTC 2012 x86_64 # x86_64 Alert Count 7 First Seen 2012-11-08 15:53:06 EST Last Seen 2012-11-08 15:53:10 EST Local ID e1402ea5-4bcb-45fa-b220-95fe0c0dc868

Raw Audit Messages type=AVC msg=audit(1352407990.104:1493): avc: denied { read } for pid=19226 comm="useradd" name="run" dev="dm-1" ino=130358 scontext=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:var_t:s0 tclass=lnk_file

type=SYSCALL msg=audit(1352407990.104:1493): arch=x86_64 syscall=connect success=no exit=EACCES a0=5 a1=7ffffac812e0 a2=6e a3=ffffffffffffffff items=0 ppid=19218 pid=19226 auid=18281 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=pts5 ses=1 comm=useradd exe=/usr/sbin/useradd subj=unconfined_u:unconfined_r:useradd_t:s0-s0:c0.c1023 key=(null)

Hash: useradd,useradd_t,var_t,lnk_file,read

audit2allow

#============= useradd_t ============== allow useradd_t var_t:lnk_file read;

audit2allow -R

#============= useradd_t ============== allow useradd_t var_t:lnk_file read;