Jay Greguske jgregusk at
Tue Sep 3 19:37:00 UTC 2013

On 09/03/2013 12:29 PM, Michael scherer wrote:
> On Tue, Sep 03, 2013 at 09:48:52AM -0600, Kevin Fenzi wrote:
>> On Tue, 03 Sep 2013 10:10:32 -0400
>> Jay Greguske <jgregusk at> wrote:
>>> If we had SELinux policy enabled on the builders and used MLS on the
>>> chroots that would mitigate chroot-to-chroot attacks. I'm not sure if
>>> policy could prevent a chroot'ed process from getting access to the
>>> builder's certificate. If it could, I think getting SELinux working on
>>> the builders would be an easier path than re-writing koji to use VMs.
>>> Maybe someone with more expertise could comment on the latter issue.
>> In the past we had selinux disabled on the builders, as mock didn't
>> handle selinux very well at all and there were issues. (even in
>> permissive mode).
>> With this switch to Fedora 19 for builders, we also enabled selinux in
>> permissive mode to gather information on any outstanding issues/avcs. 
>> Ideally I would like to get them all to enforcing and make sure we lock
>> down the builds as much as we are able from the vm. 
> the main issue is that mock should do the transition to a different domain once it
> run anything in chroot. I do have a patch but I was not able to make a policy for the transition
> ( or my patch is buggy ) and I didn't look at it since a few weeks. I can send it
> if someone want to take a look.

Please post it. :)

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