Messages in this thread | | | Date | Tue, 24 Feb 2015 09:48:48 -0600 (CST) | From | Christoph Lameter <> | Subject | Re: [PATCH] capabilities: Ambient capability set V1 |
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On Mon, 23 Feb 2015, Andy Lutomirski wrote:
> On Feb 23, 2015 8:41 AM, "Christoph Lameter" <cl@linux.com> wrote: > > > > On Mon, 23 Feb 2015, Andy Lutomirski wrote: > > > > > If you set ambient caps and then run a setuid program (without > > > no_new_privs), then the ambient set *must* be cleared by the kernel > > > because that's what the setuid program expects. Yes, the whole > > > > Why would a setuid program expect that? I'd say we expect the ambient set > > to remain in effect. What would break if the ambient set would stay > > active? > > > > On a total guess: exim, sendmail, sudo, Apache suexec, etc. Basically > anything that expects setresuid(nonzero values); execve to drop caps.
Really? We have been running these things for years with the approach of leaving these caps active.
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