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| author |   djm <djm@openbsd.org> | 2008-04-04 05:14:38 +0000 |
|---|---|---|
| committer | djm <djm@openbsd.org> | 2008-04-04 05:14:38 +0000 |
| commit | de51a352e5fa8d3a3890613a591b7955f10bf4ce (patch) | |
| tree | 0d36cfe327f56cf9483b95492d7fdd1d6934d4e7 /usr.bin/ssh/sshd_config.5 | |
| parent | simplify SNDCTL_DSP_SETTRIGGER (diff) | |
| download | wireguard-openbsd-de51a352e5fa8d3a3890613a591b7955f10bf4ce.tar.xz wireguard-openbsd-de51a352e5fa8d3a3890613a591b7955f10bf4ce.zip | |
ChrootDirectory is supported in Match blocks (in fact, it is most useful
there). Spotted by Minstrel AT minstrel.org.uk
Diffstat (limited to 'usr.bin/ssh/sshd_config.5')
| -rw-r--r-- | usr.bin/ssh/sshd_config.5 | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/usr.bin/ssh/sshd_config.5 b/usr.bin/ssh/sshd_config.5 index 9212eb5ac5b..a5a140d410b 100644 --- a/usr.bin/ssh/sshd_config.5 +++ b/usr.bin/ssh/sshd_config.5 @@ -34,8 +34,8 @@ .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" -.\" $OpenBSD: sshd_config.5,v 1.84 2008/03/25 11:58:02 djm Exp $ -.Dd $Mdocdate: March 25 2008 $ +.\" $OpenBSD: sshd_config.5,v 1.85 2008/04/04 05:14:38 djm Exp $ +.Dd $Mdocdate: April 4 2008 $ .Dt SSHD_CONFIG 5 .Os .Sh NAME @@ -210,6 +210,29 @@ in-process sftp server is used (see .Cm Subsystem for details). .Pp +Please note that there are many ways to misconfigure a chroot environment +in ways that compromise security. +These include: +.Pp +.Bl -dash -offset indent -compact +.It +Making unsafe setuid binaries available; +.It +Having missing or incorrect configuration files in the chroot's +.Pa /etc +directory; +.It +Hard-linking files between the chroot and outside; +.It +Leaving unnecessary +.Pa /dev +nodes accessible inside the chroot (especially those for physical drives); +.It +Executing scripts or binaries inside the chroot from outside, either +directly or through facilities such as +.Xr cron 8 . +.El +.Pp The default is not to .Xr chroot 2 . .It Cm Ciphers @@ -340,6 +363,11 @@ Specifying a command of will force the use of an in-process sftp server that requires no support files when used with .Cm ChrootDirectory . +Note that +.Dq internal-sftp +is only supported when +.Cm UsePrivilegeSeparation +is enabled. .It Cm GatewayPorts Specifies whether remote hosts are allowed to connect to ports forwarded for the client. @@ -563,6 +591,7 @@ keyword. Available keywords are .Cm AllowTcpForwarding , .Cm Banner , +.Cm ChrootDirectory , .Cm ForceCommand , .Cm GatewayPorts , .Cm GSSApiAuthentication , @@ -801,6 +830,11 @@ server. This may simplify configurations using .Cm ChrootDirectory to force a different filesystem root on clients. +Note that +.Dq internal-sftp +is only supported when +.Cm UsePrivilegeSeparation +is enabled. .Pp By default no subsystems are defined. Note that this option applies to protocol version 2 only. |