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SubjectRe: Security patch for /proc

On Tue, 31 Mar 1998, Jeremy Fitzhardinge wrote:

> Hi all,
>
> Here's a patch which prevents chrooted processes from escaping from
> their chrooted area via /proc.

Hi,

I'm not sure I agree with this approach -- perhaps root processes should
not be allowed to use the mount() syscall if root_dir != real_root. The
other main source of nastiness is ptrace() -- this needs to be banned in a
similar manner. There are other ways root could escape a chroot()
jail, we need to think about them and eliminate them one by one.

Chris


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