Messages in this thread | | | Subject | Re: Linux 2.2.18pre21 | Date | Thu, 16 Nov 2000 21:40:18 +0000 (GMT) | From | Alan Cox <> |
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> It's simply not good enough to close all directory file descriptors before chrooting. > > If calling chroot once you're already in a chroot jail was disallowed, it would stop > this attack.
I think the problem here is that some people have the idea that chroot is some kind of magical security device. Thats not true at all. You can build an environment like that if you wish by closing other directory handles and having no suitably priviledged code in the chroot area and stuff.
Alan
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