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From: Benedict Reuschling <bcr@FreeBSD.org>
Date: Thu, 28 Jul 2011 11:41:56 +0000 (UTC)
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Subject: svn commit: r224475 - head/usr.sbin/jail
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Author: bcr (doc committer)
Date: Thu Jul 28 11:41:55 2011
New Revision: 224475
URL: http://svn.freebsd.org/changeset/base/224475

Log:
  Add a section to the jail chapter that explains why it is not
  recommended to allow root users in the jail to access the host system.
  
  PR:		docs/156853
  Submitted by:	crees
  Patch by:	crees
  Approved by:	re (kib) for BETA1

Modified:
  head/usr.sbin/jail/jail.8

Modified: head/usr.sbin/jail/jail.8
==============================================================================
--- head/usr.sbin/jail/jail.8	Thu Jul 28 10:16:30 2011	(r224474)
+++ head/usr.sbin/jail/jail.8	Thu Jul 28 11:41:55 2011	(r224475)
@@ -34,7 +34,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 23, 2011
+.Dd July 28, 2011
 .Dt JAIL 8
 .Os
 .Sh NAME
@@ -914,3 +914,8 @@ directory that is moved out of the jail'
 access to the file space outside of the jail.
 It is recommended that directories always be copied, rather than moved, out
 of a jail.
+.Pp
+It is also not recommended that users allowed root in the jail be allowed
+access to the host system.
+For example, a root user in a jail can create a setuid root utility that
+could be run in the host system to achieve elevated privileges.