SELinux Puppet update in Fedora 20 and Rawhide

We are rolling out update of Puppet to 3.4.3 in Fedora 20 and Rawhide that adds one important change. We have found that puppet master was running unconfined, therefore the Puppet SELinux policy was not effective in Fedoras.

The puppet package update fixes one little issue (missing runtime dependency) and corrects startup wrappers for systemd which puts Puppet Master into correct SELinux domain puppetmaster_t. Since this has low security impact, we have decided to backport this change into Fedora 20 too. Another reason is the change in selinux-policy package in Fedora 20 which allows us to backport the changes into EPEL7.

SELinux core puppet policy was refactored in paralel so we have now puppetmaster_t and puppetagent_t domains which reflects the state much better. Previously puppet agent was running under puppet_t confined domain, now it runs under puppetagent_t domain. Also the agent has loosed security rules which is great improvement too.

To update your host do the following:

yum --enablerepo=updates-testing makecache
yum --enablerepo=updates-testing update selinux-policy puppet puppet-server

When upgrading make sure you have the correct versions on the mirror:

  • puppet 3.4.3-3.fc20 or higher
  • policy 3.12.1-153.fc20 or higher

Restart puppetmaster, agent and watch for denials. Report success and failures in my comments or in the update comments.

grep AVC /var/log/audit/audit.log

Let’s make sure we have rock solid version of Puppet hardened with SELinux in the best quality possible in EPEL7. Thanks for help!

10 April 2014 | linux | fedora | puppet | foreman
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