Messages in this thread | | | From | Andy Lutomirski <> | Date | Mon, 23 Feb 2015 15:51:33 -0800 | Subject | Re: [PATCH] capabilities: Ambient capability set V1 |
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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.
I haven't checked how many of the examples above actually do this.
--Andy
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