https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=121073
Robert Watson <rwat...@freebsd.org> changed:
What |Removed |Added
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CC| |rwat...@freebsd.org
--- Comment #8 from Robert Watson <rwat...@freebsd.org> ---
A appreciate the desirability for the features implied by this change, but
given the propensity for vulnerabilities relating to chroot() in the past,
think we should take a very conservative approach to potentially adopting it.
There's a particular concern with how it interacts with non-UNIX-ID-based
models -- e.g., MAC, Capsicum, Audit, Jail, as well as a future fine-grained
privilege model.
Overall, I'd rate this proposed change as "extremely high risk; we will fix
multiple vulnerabilities in it in the future," and so that cost would need to
be carefully weighed against presumed benefit -- a fine-grained privilege model
in which PRIV_CHROOT is delegable to only specific users or roles would help
mitigate that risk.
I wonder if a more suitable name for the proposed P_NOSUGID would be
P_NOCREDCHANGE, and I also wonder if it should be CR_NOCREDCHANGE.
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