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Re: sys_chroot+sys_fchdir Fix
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From:
Alan Cox <alan@...>
To: majkls <majkls@...>
Cc: <bunk@...>, <linux-kernel@...>
Subject:
Re: sys_chroot+sys_fchdir Fix
Date: Wednesday, September 19, 2007 - 5:40 am
On Wed, 19 Sep 2007 09:19:50 +0200 majkls <majkls@prepere.com> wrote:
quoted text
> Hello, > here is an fix to an exploit (obtained somewhere in internet). This > exploit can workaround chroot with CAP_SYS_CHROOT. It is also possible > (with sufficient filedescriptor (if there is na directory fd opened in > root) workaround chroot with sys_fchdir. This patch fixes it.
If you have the ability to use chroot() you are root. If you are root you can walk happily out of any chroot by a thousand other means. Alan -
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Messages in current thread:
sys_chroot+sys_fchdir Fix
, majkls
, (Wed Sep 19, 3:19 am)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Wed Sep 19, 5:40 am)
Re: sys_chroot+sys_fchdir Fix
, Bill Davidsen
, (Wed Sep 19, 2:27 pm)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Wed Sep 19, 2:45 pm)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 19, 6:24 pm)
Re: sys_chroot+sys_fchdir Fix
, Phillip Susi
, (Fri Sep 21, 1:39 pm)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Fri Sep 21, 2:10 pm)
Re: sys_chroot+sys_fchdir Fix
, Phillip Susi
, (Tue Sep 25, 4:53 pm)
Re: sys_chroot+sys_fchdir Fix
, Al Viro
, (Tue Sep 25, 8:23 pm)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 6:34 am)
Re: sys_chroot+sys_fchdir Fix
, Christer Weinigel
, (Wed Sep 26, 3:24 pm)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 5:19 pm)
Re: sys_chroot+sys_fchdir Fix
, Christer Weinigel
, (Thu Sep 27, 3:28 am)
Re: sys_chroot+sys_fchdir Fix
, Theodore Tso
, (Thu Sep 27, 7:23 am)
Re: sys_chroot+sys_fchdir Fix
, Bill Davidsen
, (Thu Sep 27, 10:36 am)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Thu Sep 27, 9:06 pm)
Re: sys_chroot+sys_fchdir Fix
, Adrian Bunk
, (Wed Sep 26, 5:55 pm)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 7:35 pm)
Re: sys_chroot+sys_fchdir Fix
, Adrian Bunk
, (Wed Sep 26, 8:01 pm)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Thu Sep 27, 2:42 am)
Re: sys_chroot+sys_fchdir Fix
, Adrian Bunk
, (Thu Sep 27, 2:53 am)
Re: sys_chroot+sys_fchdir Fix
, Al Viro
, (Wed Sep 26, 11:59 pm)
Re: sys_chroot+sys_fchdir Fix
, Al Viro
, (Wed Sep 26, 2:40 pm)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Wed Sep 26, 7:21 am)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 7:22 am)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Wed Sep 26, 7:38 am)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 7:56 am)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Wed Sep 26, 10:10 am)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 12:54 pm)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Wed Sep 26, 1:04 pm)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 1:18 pm)
Re: sys_chroot+sys_fchdir Fix
, Alan Cox
, (Wed Sep 26, 1:29 pm)
Re: sys_chroot+sys_fchdir Fix
, David Newall
, (Wed Sep 26, 1:28 pm)
Re: sys_chroot+sys_fchdir Fix
, Chris Adams
, (Wed Sep 26, 11:03 am)
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