From: Matthew Garrett <mjg59@google.com>
To: Kavitha Sivagnanam <kavi@juniper.net>
Cc: "linux-integrity@vger.kernel.org" <linux-integrity@vger.kernel.org>
Subject: Re: Can we enforce "IMA Policy" based on file type
Date: Tue, 23 Apr 2019 10:59:50 -0700 [thread overview]
Message-ID: <CACdnJutoJGm8mJJvgXZqpD7sa+OUxYqHHVyJEeGMu2WrubddZQ@mail.gmail.com> (raw)
In-Reply-To: <BYAPR05MB39753CB3CA47513EEADC134CC1270@BYAPR05MB3975.namprd05.prod.outlook.com>
On Fri, Apr 19, 2019 at 5:08 PM Kavitha Sivagnanam <kavi@juniper.net> wrote:
>
> Hi
>
> I am wondering, in the current implementation of IMA policy, if there is a way to enforce appraisal on a file based on the file type. The file type that I am interested in enforcing the policy is for SquashFS files.
Not directly - the kernel has no idea of what type a file has. If you
use selinux or smack then you can label squashfs files with a specific
type and then use the obj_role option in your policy. You'd also need
policy that prevents anyone else from modifying these, so depending on
what your threat model is this may not work out.
next prev parent reply other threads:[~2019-04-23 18:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-19 21:52 Can we enforce "IMA Policy" based on file type Kavitha Sivagnanam
2019-04-23 17:59 ` Matthew Garrett [this message]
2019-04-23 19:49 ` Kavitha Sivagnanam
2019-04-25 11:58 ` Mimi Zohar
2019-04-25 17:07 ` Kavitha Sivagnanam
2019-04-25 19:35 ` Nayna
2019-06-25 21:35 ` Kavitha Sivagnanam
2019-07-07 20:59 ` Mimi Zohar
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