ssh: update to OpenSSH 9.1p1

Release notes are available at https://www.openssh.com/txt/release-9.1

9.1 contains fixes for three minor memory safety problems; these have
lready been merged to the copy of OpenSSH 9.0 that is in the FreeBSD base
system.

Some highlights copied from the release notes:

Potentially-incompatible changes
--------------------------------

 * ssh(1), sshd(8): SetEnv directives in ssh_config and sshd_config
   are now first-match-wins to match other directives. Previously
   if an environment variable was multiply specified the last set
   value would have been used. bz3438

 * ssh-keygen(8): ssh-keygen -A (generate all default host key types)
   will no longer generate DSA keys, as these are insecure and have
   not been used by default for some years.

New features
------------

 * ssh(1), sshd(8): add a RequiredRSASize directive to set a minimum
   RSA key length. Keys below this length will be ignored for user
   authentication and for host authentication in sshd(8).

 * sftp-server(8): add a "users-groups-by-id@openssh.com" extension
   request that allows the client to obtain user/group names that
   correspond to a set of uids/gids.

 * sftp(1): use "users-groups-by-id@openssh.com" sftp-server
   extension (when available) to fill in user/group names for
   directory listings.

 * sftp-server(8): support the "home-directory" extension request
   defined in draft-ietf-secsh-filexfer-extensions-00. This overlaps
   a bit with the existing "expand-path@openssh.com", but some other
   clients support it.

 * ssh-keygen(1), sshd(8): allow certificate validity intervals,
   sshsig verification times and authorized_keys expiry-time options
   to accept dates in the UTC time zone in addition to the default
   of interpreting them in the system time zone. YYYYMMDD and
   YYMMDDHHMM[SS] dates/times will be interpreted as UTC if suffixed
   with a 'Z' character.

   Also allow certificate validity intervals to be specified in raw
   seconds-since-epoch as hex value, e.g. -V 0x1234:0x4567890. This
   is intended for use by regress tests and other tools that call
   ssh-keygen as part of a CA workflow. bz3468

 * sftp(1): allow arguments to the sftp -D option, e.g. sftp -D
   "/usr/libexec/sftp-server -el debug3"

 * ssh-keygen(1): allow the existing -U (use agent) flag to work
   with "-Y sign" operations, where it will be interpreted to require
   that the private keys is hosted in an agent; bz3429

MFC after:	2 weeks
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation

1 files changed, 14 insertions, 9 deletions

diff --git a/crypto/openssh/ssh-pkcs11-helper.8 b/crypto/openssh/ssh-pkcs11-helper.8
index 6a592b1f36e3..5edc98507e0c 100644
--- a/crypto/openssh/ssh-pkcs11-helper.8
+++ b/crypto/openssh/ssh-pkcs11-helper.8
@@ -1,4 +1,4 @@
-.\" $OpenBSD: ssh-pkcs11-helper.8,v 1.6 2019/11/30 07:07:59 jmc Exp $
+.\" $OpenBSD: ssh-pkcs11-helper.8,v 1.7 2022/04/29 03:24:30 djm Exp $
 .\"
 .\" Copyright (c) 2010 Markus Friedl.  All rights reserved.
 .\"
@@ -14,7 +14,7 @@
 .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd $Mdocdate: November 30 2019 $
+.Dd $Mdocdate: April 29 2022 $
 .Dt SSH-PKCS11-HELPER 8
 .Os
 .Sh NAME
@@ -26,12 +26,14 @@
 .Sh DESCRIPTION
 .Nm
 is used by
-.Xr ssh-agent 1
+.Xr ssh 1 ,
+.Xr ssh-agent 1 ,
+and
+.Xr ssh-keygen 1
 to access keys provided by a PKCS#11 token.
 .Pp
 .Nm
-is not intended to be invoked by the user, but from
-.Xr ssh-agent 1 .
+is not intended to be invoked directly by the user.
 .Pp
 A single option is supported:
 .Bl -tag -width Ds
@@ -47,17 +49,20 @@ options increase the verbosity.
 The maximum is 3.
 .Pp
 Note that
-.Xr ssh-agent 1
+.Xr ssh 1 ,
+.Xr ssh-agent 1 ,
+and
+.Xr ssh-keygen 1
 will automatically pass the
 .Fl v
 flag to
 .Nm
-when it has itself been placed in debug mode.
+when they have themselves been placed in debug mode.
 .El
 .Sh SEE ALSO
 .Xr ssh 1 ,
-.Xr ssh-add 1 ,
-.Xr ssh-agent 1
+.Xr ssh-agent 1 ,
+.Xr ssh-keygen 1
 .Sh HISTORY
 .Nm
 first appeared in