Re: Security patch for /proc

Jeremy Fitzhardinge (jeremy@zip.com.au)
Thu, 02 Apr 1998 11:11:15 +1000

Robert Bihlmeyer wrote:
> Alan Cox wrote:
> >> mkdir("x"); chroot("x"); chdir("../../../../../../../..");
> >> chroot(".");
> You tried it? One will escape from x with that.

Well, one was never really captured. I didn't notice the missing chdir,
but its well known behaviour that if you never chdir into a chroot jail,
you can easily "escape".

J

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