Re: Chroot bug

[Jan Engelhardt]

On Sep 25 2007 16:48, Alan Cox wrote:
>David Newall <david@xxxxxxxxxxxxxxx> wrote:
>> Alan Cox wrote:
>>>>
>>>> Marek's loading dynamic libraries, it seems clear that the prime
>>>> purpose of chroot is to aid security.  Being able to cd your way
>>>> out is handy
>>>
>>> Does it - I can't find any evidence for that.
>>
>> It seems self-evident to me.  What do you think is it prime purpose?
>
>Debugging and testing. At least that is as I understand it much of where
>it came from.
>
>>> A root user can get out of a chroot a million different ways

Uhm, you _do_ have considered the case of setuid(non-0)-after-chroot,
have not you?
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