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Provide a warning about chroot misuses (which sadly, seem
 to have become quite popular because shiny).  sshd cannot detect/manage/do
 anything about these cases, best we can do is warn in the right spot in the
 man page. ok markus
This commit is contained in:
deraadt@openbsd.org 2015-01-22 20:24:41 +00:00 committed by Damien Miller
parent 087266ec33
commit dcff5810a1
1 changed files with 13 additions and 4 deletions
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17
sshd_config.5
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@ -33,8 +33,8 @@
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\" .\"
.\" $OpenBSD: sshd_config.5,v 1.189 2015/01/13 07:39:19 djm Exp $ .\" $OpenBSD: sshd_config.5,v 1.190 2015/01/22 20:24:41 deraadt Exp $
.Dd $Mdocdate: January 13 2015 $ .Dd $Mdocdate: January 22 2015 $
.Dt SSHD_CONFIG 5 .Dt SSHD_CONFIG 5
.Os .Os
.Sh NAME .Sh NAME
@ -330,8 +330,10 @@ The default is
Specifies the pathname of a directory to Specifies the pathname of a directory to
.Xr chroot 2 .Xr chroot 2
to after authentication. to after authentication.
All components of the pathname must be root-owned directories that are At session startup
not writable by any other user or group. .Xr sshd 8
checks that all components of the pathname are root-owned directories
which are not writable by any other user or group.
After the chroot, After the chroot,
.Xr sshd 8 .Xr sshd 8
changes the working directory to the user's home directory. changes the working directory to the user's home directory.
@ -368,6 +370,13 @@ inside the chroot directory on some operating systems (see
.Xr sftp-server 8 .Xr sftp-server 8
for details). for details).
.Pp .Pp
For safety, it is very important that the directory heirarchy be
prevented from modification by other processes on the system (especially
those outside the jail).
Misconfiguration can lead to unsafe environments which
.Xr sshd 8
cannot detect.
.Pp
The default is not to The default is not to
.Xr chroot 2 . .Xr chroot 2 .
.It Cm Ciphers .It Cm Ciphers