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Document the potential for jail escape.

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Submitted by:	Vedad KAJTAZ (vedad % kajtaz net)
PR:		142341
Reviewed by:	bz, rwatson
Rewording by:	rwatson
Approved by:	re (kensmith)
MFC after:	3 days
This commit is contained in:
Glen Barber 2011-07-24 03:34:38 +00:00
parent 5d5140280b
commit 1f897ce116
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=224286
1 changed files with 8 additions and 1 deletions
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9
usr.sbin/jail/jail.8
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@ -34,7 +34,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd January 17, 2010
.Dd July 23, 2011
.Dt JAIL 8
.Os
.Sh NAME
@ -907,3 +907,10 @@ Currently, the simplest answer is to minimize services
offered on the host, possibly limiting it to services offered from
.Xr inetd 8
which is easily configurable.
.Sh NOTES
Great care should be taken when managing directories visible within the jail.
For example, if a jailed process has its current working directory set to a
directory that is moved out of the jail's chroot, then the process may gain
access to the file space outside of the jail.
It is recommended that directories always be copied, rather than moved, out
of a jail.