ssh: Update to OpenSSH 9.3p1

This release fixes a number of security bugs and has minor new
features and bug fixes. Security fixes, from the release notes
(https://www.openssh.com/txt/release-9.3):

ssh: Update to OpenSSH 9.3p1

This release fixes a number of security bugs and has minor new
features and bug fixes. Security fixes, from the release notes
(https://www.openssh.com/txt/release-9.3):

This release contains fixes for a security problem and a memory
safety problem. The memory safety problem is not believed to be
exploitable, but we report most network-reachable memory faults as
security bugs.

* ssh-add(1): when adding smartcard keys to ssh-agent(1) with the
per-hop destination constraints (ssh-add -h ...) added in OpenSSH
8.9, a logic error prevented the constraints from being
communicated to the agent. This resulted in the keys being added
without constraints. The common cases of non-smartcard keys and
keys without destination constraints are unaffected. This problem
was reported by Luci Stanescu.

* ssh(1): Portable OpenSSH provides an implementation of the
getrrsetbyname(3) function if the standard library does not
provide it, for use by the VerifyHostKeyDNS feature. A
specifically crafted DNS response could cause this function to
perform an out-of-bounds read of adjacent stack data, but this
condition does not appear to be exploitable beyond denial-of-
service to the ssh(1) client.

The getrrsetbyname(3) replacement is only included if the system's
standard library lacks this function and portable OpenSSH was not
compiled with the ldns library (--with-ldns). getrrsetbyname(3) is
only invoked if using VerifyHostKeyDNS to fetch SSHFP records. This
problem was found by the Coverity static analyzer.

Sponsored by: The FreeBSD Foundation

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openssh: update to OpenSSH v8.7p1

Some notable changes, from upstream's release notes:

- sshd(8): Remove support for obsolete "host/port" syntax.
- ssh(1): When prompting whether to record a new ho

openssh: update to OpenSSH v8.7p1

Some notable changes, from upstream's release notes:

- sshd(8): Remove support for obsolete "host/port" syntax.
- ssh(1): When prompting whether to record a new host key, accept the key
fingerprint as a synonym for "yes".
- ssh-keygen(1): when acting as a CA and signing certificates with an RSA
key, default to using the rsa-sha2-512 signature algorithm.
- ssh(1), sshd(8), ssh-keygen(1): this release removes the "ssh-rsa"
(RSA/SHA1) algorithm from those accepted for certificate signatures.
- ssh-sk-helper(8): this is a new binary. It is used by the FIDO/U2F
support to provide address-space isolation for token middleware
libraries (including the internal one).
- ssh(1): this release enables UpdateHostkeys by default subject to some
conservative preconditions.
- scp(1): this release changes the behaviour of remote to remote copies
(e.g. "scp host-a:/path host-b:") to transfer through the local host
by default.
- scp(1): experimental support for transfers using the SFTP protocol as
a replacement for the venerable SCP/RCP protocol that it has
traditionally used.

Additional integration work is needed to support FIDO/U2F in the base
system.

Deprecation Notice
------------------

OpenSSH will disable the ssh-rsa signature scheme by default in the
next release.

Reviewed by: imp
MFC after: 1 month
Relnotes: Yes
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D29985

show more ...

MFC @ r241285

IFC @ r242684

Sync from head

Merge head r233826 through r240095.

Upgrade OpenSSH to 6.1p1.

Vendor import of OpenSSH 4.4p1.

This commit was generated by cvs2svn to compensate for changes in r162852,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 4.3p1.

This commit was generated by cvs2svn to compensate for changes in r157016,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 4.0p1.

This commit was generated by cvs2svn to compensate for changes in r146998,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 3.8p1.

This commit was generated by cvs2svn to compensate for changes in r126274,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 3.7.1p2.

This commit was generated by cvs2svn to compensate for changes in r124208,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH-portable 3.6.1p1.

This commit was generated by cvs2svn to compensate for changes in r113908,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH-portable 3.5p1.

This commit was generated by cvs2svn to compensate for changes in r106121,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 3.3p1.

This commit was generated by cvs2svn to compensate for changes in r98937,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 4.4p1.

This commit was generated by cvs2svn to compensate for changes in r162852,
which included commits to RCS files with non-trunk default branches.