Bug 386331 - selinux denies crond running
selinux denies crond running
Product: Fedora
Classification: Fedora
Component: selinux-policy (Show other bugs)
All Linux
low Severity medium
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Assigned To: Daniel Walsh
Fedora Extras Quality Assurance
Depends On:
  Show dependency treegraph
Reported: 2007-11-16 00:41 EST by Torsten Ekedahl
Modified: 2008-01-30 14:18 EST (History)
0 users

See Also:
Fixed In Version: Current
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2008-01-30 14:18:24 EST
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Regression: ---
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Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Torsten Ekedahl 2007-11-16 00:41:33 EST
Description of problem:
The running of crond is denied by selinux

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. Make a crontab entry as per below
2. Sit and wait till the entry should be run
Actual results:
A message from sealert and no running of entry

Expected results:
Running of crontab entry

Additional info:
This could be related to Bug 384821, but I gave it a new bug report
as I wasn't sure.

The output from sealert is:

SELinux is preventing the /usr/sbin/crond from using potentially mislabeled 
files ().
Detailed Description
SELinux has denied /usr/sbin/crond access to potentially mislabeled file(s) 
(). This means that SELinux will not allow /usr/sbin/crond to use these files. 
It is common for users to edit files in their home directory or tmp 
directories and then move (mv) them to system directories. The problem is that 
the files end up with the wrong file context which confined applications are 
not allowed to access.
Allowing Access
If you want /usr/sbin/crond to access this files, you need to relabel them 
using restorecon -v . You might want to relabel the entire directory using 
restorecon -R -v .
Additional Information
Source Context:  system_u:system_r:crond_t:s0-s0:c0.c1023
Target Context:  root:object_r:user_home_t:s0
Target Objects:  None [ dir ]
Affected RPM Packages:  vixie-cron-4.2-5.fc8 [application]
Policy RPM:  selinux-policy-3.0.8-47.fc8
Selinux Enabled:  True
Policy Type:  targeted
MLS Enabled:  TrueEnforcing 
Mode:  EnforcingPlugin 
Name:  plugins.home_tmp_bad_labels
Host Name:  homealone.math.su.se
Platform:  Linux homealone.math.su.se #1 SMP Thu Nov 8 
21:41:26 EST 2007 i686 i686
Alert Count:  1
First Seen:  Fri 16 Nov 2007 06:02:01 AM CET
Last Seen:  Fri 16 Nov 2007 06:02:01 AM CET
Local ID:  3866406c-70a6-48b2-9151-94b16c4927f4
Line Numbers:  
Raw Audit Messages :
avc: denied { search } for comm=crond dev=dm-0 egid=200 euid=509 
exe=/usr/sbin/crond exit=-13 fsgid=200 fsuid=509 gid=200 items=0 name=teke 
pid=4035 scontext=system_u:system_r:crond_t:s0-s0:c0.c1023 sgid=200 
subj=system_u:system_r:crond_t:s0-s0:c0.c1023 suid=509 tclass=dir 
tcontext=root:object_r:user_home_t:s0 tty=(none) uid=509
Comment 1 Daniel Walsh 2007-11-16 09:52:49 EST

Fixed in selinux-policy-3.0.8-57.fc8
Comment 2 Daniel Walsh 2007-11-16 09:55:33 EST
You can allow this for now by executing 

# audit2allow -M mypol -i /var/log/audit/audit.log 
# semodule -i mypol.pp
Comment 3 Daniel Walsh 2008-01-30 14:18:24 EST
Bulk closing all bugs in Fedora updates in the modified state.  If you bug is
not fixed, please reopen.

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