Messages in this thread | | | Date | Tue, 25 Sep 2007 18:19:41 +0200 | From | Miloslav Semler <> | Subject | Re: Chroot bug |
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>>> So what? Just do this: chdir into the root after chroot. >>> >> I don't think so. His exploit just got me all the way out of a chroot within a >> chroot within a chroot, inclusive of lots of chdirs. >> > > Close all fds that point to directories outside the root ;-) > > This does not help. Let's try: chroot somewhere mkdir foo fd = open / chroot foo fchdir fd chdir ".." .... chdir ".." chroot "." so you are in root.
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