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Description of problem:
Configure snmpd to use a pass_persist program which reads data from a file in /var/run/net-snmp. The program runs as root but is denied read access to the file.

Version-Release number of selected component (if applicable):
net-snmp-5.5-37.el6_2.1.x86_64
selinux-policy-3.7.19-126.el6_2.10.noarch


How reproducible:
Always


Steps to Reproduce:
1. Run root cron job to write to a file in /var/run/net-snmp
2. Configure /etc/snmp/snmpd.conf to run a program using the pass_persist directive which reads the above file.
3. The program will run via snmpd but is denied read access.
4. Running 'semodule -DB' will show the AVCs in /var/log/audit/audit.log
  
Actual results:
No output from the pass_persist program, so snmpd gives the error (in my case):
   SNMPv2-SMI::enterprises.141.1.1.10 = No Such Instance currently
   exists at this OID


Expected results:
Snmpd should have read access to anything in /var/run/net-snmp, so SNMP results should be read and returned to snmpd.

Additional info:
This was discussed on the CentOS mailing list, but has been confirmed on our RHEL 6.2 system as well:
http://lists.centos.org/pipermail/centos/2012-May/126403.html

Sorry, should have added this:

By default '/var/run/net-snmp' has the context 'system_u:object_r:var_run_t:s0'.
If I run:

   chcon -t snmpd_var_run_t /var/run/net-snmp

then the pass_persist program works fine via snmpd.

This has been fixed.

*** This bug has been marked as a duplicate of bug 822480 ***