openssh: Fix blacklistd sshd-session integration

In version 9.8, the server was split into a listener binary, sshd(8),
and a per-session binary "sshd-session".

Our blacklistd changes also have to b

openssh: Fix blacklistd sshd-session integration

In version 9.8, the server was split into a listener binary, sshd(8),
and a per-session binary "sshd-session".

Our blacklistd changes also have to be moved from sshd.c to
sshd-session.c.

Reviewed by: emaste
Approved by: emaste (mentor)
Fixes: 0fdf8fae8b56 ("openssh: Update to 9.8p1")
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D49116

show more ...

openssh: Update to 9.9p1

Highlights from the release notes are reproduced below. Bug fixes and
improvements that were previously merged into FreeBSD have been elided.

See the upstream release note

openssh: Update to 9.9p1

Highlights from the release notes are reproduced below. Bug fixes and
improvements that were previously merged into FreeBSD have been elided.

See the upstream release notes for full details of the 9.9p1 release
(https://www.openssh.com/releasenotes.html).

---

Future deprecation notice
=========================

OpenSSH plans to remove support for the DSA signature algorithm in
early 2025.

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

* ssh(1): remove support for pre-authentication compression.

* ssh(1), sshd(8): processing of the arguments to the "Match"
configuration directive now follows more shell-like rules for
quoted strings, including allowing nested quotes and \-escaped
characters.

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

* ssh(1), sshd(8): add support for a new hybrid post-quantum key
exchange based on the FIPS 203 Module-Lattice Key Enapsulation
mechanism (ML-KEM) combined with X25519 ECDH as described by
https://datatracker.ietf.org/doc/html/draft-kampanakis-curdle-ssh-pq-ke-03
This algorithm "mlkem768x25519-sha256" is available by default.

* ssh(1), sshd(8), ssh-agent(1): prevent private keys from being
included in core dump files for most of their lifespans. This is
in addition to pre-existing controls in ssh-agent(1) and sshd(8)
that prevented coredumps. This feature is supported on OpenBSD,
Linux and FreeBSD.

* All: convert key handling to use the libcrypto EVP_PKEY API, with
the exception of DSA.

Bugfixes
--------

* sshd(8): do not apply authorized_keys options when signature
verification fails. Prevents more restrictive key options being
incorrectly applied to subsequent keys in authorized_keys. bz3733

* ssh-keygen(1): include pathname in some of ssh-keygen's passphrase
prompts. Helps the user know what's going on when ssh-keygen is
invoked via other tools. Requested in GHPR503

* ssh(1), ssh-add(1): make parsing user@host consistently look for
the last '@' in the string rather than the first. This makes it
possible to more consistently use usernames that contain '@'
characters.

* ssh(1), sshd(8): be more strict in parsing key type names. Only
allow short names (e.g "rsa") in user-interface code and require
full SSH protocol names (e.g. "ssh-rsa") everywhere else. bz3725

* ssh-keygen(1): clarify that ed25519 is the default key type
generated and clarify that rsa-sha2-512 is the default signature
scheme when RSA is in use. GHPR505

---

Reviewed by: jlduran (build infrastructure)
Reviewed by: cy (build infrastructure)
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48947

show more ...

openssh: Update to 9.8p1

Highlights from the release notes are reproduced below. Some security
and bug fixes were previously merged into FreeBSD and have been elided.
See the upstream release notes

openssh: Update to 9.8p1

Highlights from the release notes are reproduced below. Some security
and bug fixes were previously merged into FreeBSD and have been elided.
See the upstream release notes for full details
(https://www.openssh.com/releasenotes.html).

---

Future deprecation notice
=========================

OpenSSH plans to remove support for the DSA signature algorithm in
early 2025.

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

* sshd(8): the server will now block client addresses that
repeatedly fail authentication, repeatedly connect without ever
completing authentication or that crash the server. See the
discussion of PerSourcePenalties below for more information.
Operators of servers that accept connections from many users, or
servers that accept connections from addresses behind NAT or
proxies may need to consider these settings.

* sshd(8): the server has been split into a listener binary, sshd(8),
and a per-session binary "sshd-session". This allows for a much
smaller listener binary, as it no longer needs to support the SSH
protocol. As part of this work, support for disabling privilege
separation (which previously required code changes to disable) and
disabling re-execution of sshd(8) has been removed. Further
separation of sshd-session into additional, minimal binaries is
planned for the future.

* sshd(8): several log messages have changed. In particular, some
log messages will be tagged with as originating from a process
named "sshd-session" rather than "sshd".

* ssh-keyscan(1): this tool previously emitted comment lines
containing the hostname and SSH protocol banner to standard error.
This release now emits them to standard output, but adds a new
"-q" flag to silence them altogether.

* sshd(8): (portable OpenSSH only) sshd will no longer use argv[0]
as the PAM service name. A new "PAMServiceName" sshd_config(5)
directive allows selecting the service name at runtime. This
defaults to "sshd". bz2101

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

* sshd(8): sshd(8) will now penalise client addresses that, for various
reasons, do not successfully complete authentication. This feature is
controlled by a new sshd_config(5) PerSourcePenalties option and is
on by default.

* ssh(8): allow the HostkeyAlgorithms directive to disable the
implicit fallback from certificate host key to plain host keys.

Portability
-----------

* sshd(8): expose SSH_AUTH_INFO_0 always to PAM auth modules
unconditionally. The previous behaviour was to expose it only when
particular authentication methods were in use.

* ssh(1), ssh-agent(8): allow the presence of the WAYLAND_DISPLAY
environment variable to enable SSH_ASKPASS, similarly to the X11
DISPLAY environment variable. GHPR479

---

Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D48914

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sshd: remove blacklist call from grace_alarm_timer

Under certain circumstances it may call log(3), which is not async-
signal-safe.

For now just remove the blacklist integration from this path, whi

sshd: remove blacklist call from grace_alarm_timer

Under certain circumstances it may call log(3), which is not async-
signal-safe.

For now just remove the blacklist integration from this path, which
means that blacklistd will not detect and firewall hosts that establish
a connection but do nothing further.

Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D46203

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ssh: Update to OpenSSH 9.7p1

This release contains mostly bugfixes.

It also makes support for the DSA signature algorithm a compile-time
option, with plans to disable it upstream later this year an

ssh: Update to OpenSSH 9.7p1

This release contains mostly bugfixes.

It also makes support for the DSA signature algorithm a compile-time
option, with plans to disable it upstream later this year and remove
support entirely in 2025.

Full release notes at https://www.openssh.com/txt/release-9.7

Relnotes: Yes
Sponsored by: The FreeBSD Foundation

show more ...

ssh: Update to OpenSSH 9.6p1

From the release notes,

> This release contains a number of security fixes, some small features
> and bugfixes.

The most significant change in 9.6p1 is a set of fixes

ssh: Update to OpenSSH 9.6p1

From the release notes,

> This release contains a number of security fixes, some small features
> and bugfixes.

The most significant change in 9.6p1 is a set of fixes for a newly-
discovered weakness in the SSH transport protocol. The fix was already
merged into FreeBSD and released as FreeBSD-SA-23:19.openssh.

Full release notes at https://www.openssh.com/txt/release-9.6

Relnotes: Yes
Sponsored by: The FreeBSD Foundation

show more ...

ssh: Update to OpenSSH 9.5p1

Excerpts from the release notes:

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

* ssh-keygen(1): generate Ed25519 keys by default.
[NOTE: This c

ssh: Update to OpenSSH 9.5p1

Excerpts from the release notes:

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

* ssh-keygen(1): generate Ed25519 keys by default.
[NOTE: This change was already merged into FreeBSD.]

* sshd(8): the Subsystem directive now accurately preserves quoting of
subsystem commands and arguments.

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

* ssh(1): add keystroke timing obfuscation to the client.

* ssh(1), sshd(8): Introduce a transport-level ping facility.

* sshd(8): allow override of Sybsystem directives in sshd Match blocks.

Full release notes at https://www.openssh.com/txt/release-9.5

Relnotes: Yes
Sponsored by: The FreeBSD Foundation

show more ...

sshd: do not resolve refused client hostname

This is a compromise between POLA and practical reasoning. We don't
want to block the main server loop in an attempt to resolve. But we
need to keep th

sshd: do not resolve refused client hostname

This is a compromise between POLA and practical reasoning. We don't
want to block the main server loop in an attempt to resolve. But we
need to keep the format of the logged message as is, for sake of
sshguard and other scripts. So let's print just the IP address twice,
this is what libwrap's refuse() would do if it failed to resolve.

Reviewed by: philip
PR: 269456
Differential revision: https://reviews.freebsd.org/D40069

show more ...

sshd: remove unneeded initialization of libwrap logging severities

This part of ca573c9a177 proved to be unnecessary. As the removed
comment says, we set them merely for logging syntax errors, as w

sshd: remove unneeded initialization of libwrap logging severities

This part of ca573c9a177 proved to be unnecessary. As the removed
comment says, we set them merely for logging syntax errors, as we log
refusals ourselves. However, inside the libwrap the parser logs any
syntax errors with tcpd_warn() which has hardcoded LOG_WARNING inside.

Reviewed by: philip, emaste
Differential revision: https://reviews.freebsd.org/D40068

show more ...

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

show more ...

ssh: update to OpenSSH 9.2p1

Release notes are available at https://www.openssh.com/txt/release-9.2

OpenSSH 9.2 contains fixes for two security problems and a memory safety
problem. The memory saf

ssh: update to OpenSSH 9.2p1

Release notes are available at https://www.openssh.com/txt/release-9.2

OpenSSH 9.2 contains fixes for two security problems and a memory safety
problem. The memory safety problem is not believed to be exploitable.
These fixes have already been committed to OpenSSH 9.1 in FreeBSD.

Some other notable items from the release notes:

* ssh(1): add a new EnableEscapeCommandline ssh_config(5) option that
controls whether the client-side ~C escape sequence that provides a
command-line is available. Among other things, the ~C command-line
could be used to add additional port-forwards at runtime.

* sshd(8): add support for channel inactivity timeouts via a new
sshd_config(5) ChannelTimeout directive. This allows channels that
have not seen traffic in a configurable interval to be
automatically closed. Different timeouts may be applied to session,
X11, agent and TCP forwarding channels.

* sshd(8): add a sshd_config UnusedConnectionTimeout option to
terminate client connections that have no open channels for a
length of time. This complements the ChannelTimeout option above.

* sshd(8): add a -V (version) option to sshd like the ssh client has.

* scp(1), sftp(1): add a -X option to both scp(1) and sftp(1) to
allow control over some SFTP protocol parameters: the copy buffer
length and the number of in-flight requests, both of which are used
during upload/download. Previously these could be controlled in
sftp(1) only. This makes them available in both SFTP protocol
clients using the same option character sequence.

* ssh-keyscan(1): allow scanning of complete CIDR address ranges,
e.g. "ssh-keyscan 192.168.0.0/24". If a CIDR range is passed, then
it will be expanded to all possible addresses in the range
including the all-0s and all-1s addresses. bz#976

* ssh(1): support dynamic remote port forwarding in escape
command-line's -R processing. bz#3499

MFC after: 1 week
Sponsored by: The FreeBSD Foundation

show more ...

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 c

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

show more ...

ssh: use upstream SSH_OPENSSL_VERSION macro

With the upgrade to OpenSSH 6.7p1 in commit a0ee8cc636cd we replaced
WITH_OPENSSL ifdefs with an OPENSSL_VERSION macro, later changing it
to OPENSSL_VERSI

ssh: use upstream SSH_OPENSSL_VERSION macro

With the upgrade to OpenSSH 6.7p1 in commit a0ee8cc636cd we replaced
WITH_OPENSSL ifdefs with an OPENSSL_VERSION macro, later changing it
to OPENSSL_VERSION_STRING.

A few years later OpenSSH made an equivalent change (with a different
macro name), in commit 4d94b031ff88. Switch to the macro name they
chose.

MFC after: 1 week
Sponsored by: The FreeBSD Foundation

show more ...

ssh: drop $FreeBSD$ from crypto/openssh

After we moved to git $FreeBSD$ is no longer expanded and serves no
purpose. Remove them from OpenSSH to reduce diffs against upstream.

Sponsored by: The Fr

ssh: drop $FreeBSD$ from crypto/openssh

After we moved to git $FreeBSD$ is no longer expanded and serves no
purpose. Remove them from OpenSSH to reduce diffs against upstream.

Sponsored by: The FreeBSD Foundation

show more ...

ssh: apply style(9) to version_addendum

Reported by: allanjude (in review D29953)
Fixes: 462c32cb8d7a ("Upgrade OpenSSH to 6.1p1.")
MFC after: 1 week
Sponsored by: The FreeBSD Foundation

ssh: update to OpenSSH v9.0p1

Release notes are available at https://www.openssh.com/txt/release-9.0

Some highlights:

* ssh(1), sshd(8): use the hybrid Streamlined NTRU Prime + x25519 key
exch

ssh: update to OpenSSH v9.0p1

Release notes are available at https://www.openssh.com/txt/release-9.0

Some highlights:

* ssh(1), sshd(8): use the hybrid Streamlined NTRU Prime + x25519 key
exchange method by default ("sntrup761x25519-sha512@openssh.com").
The NTRU algorithm is believed to resist attacks enabled by future
quantum computers and is paired with the X25519 ECDH key exchange
(the previous default) as a backstop against any weaknesses in
NTRU Prime that may be discovered in the future. The combination
ensures that the hybrid exchange offers at least as good security
as the status quo.

* sftp-server(8): support the "copy-data" extension to allow server-
side copying of files/data, following the design in
draft-ietf-secsh-filexfer-extensions-00. bz2948

* sftp(1): add a "cp" command to allow the sftp client to perform
server-side file copies.

This commit excludes the scp(1) change to use the SFTP protocol by
default; that change will immediately follow.

MFC after: 1 month
Relnotes: Yes
Sponsored by: The FreeBSD Foundation

show more ...

ssh: update with post-release V_8_9 branch commits

MFC after: 1 month
Sponsored by: The FreeBSD Foundation

ssh: update to OpenSSH v8.9p1

Release notes are available at https://www.openssh.com/txt/release-8.9

Some highlights:

* ssh(1), sshd(8), ssh-add(1), ssh-agent(1): add a system for
restricting

ssh: update to OpenSSH v8.9p1

Release notes are available at https://www.openssh.com/txt/release-8.9

Some highlights:

* ssh(1), sshd(8), ssh-add(1), ssh-agent(1): add a system for
restricting forwarding and use of keys added to ssh-agent(1)

* ssh(1), sshd(8): add the sntrup761x25519-sha512@openssh.com hybrid
ECDH/x25519 + Streamlined NTRU Prime post-quantum KEX to the
default KEXAlgorithms list (after the ECDH methods but before the
prime-group DH ones). The next release of OpenSSH is likely to
make this key exchange the default method.

* sshd(8), portable OpenSSH only: this release removes in-built
support for MD5-hashed passwords. If you require these on your
system then we recommend linking against libxcrypt or similar.

Future deprecation notice
=========================

A near-future release of OpenSSH will switch scp(1) from using the
legacy scp/rcp protocol to using SFTP by default.

Legacy scp/rcp performs wildcard expansion of remote filenames (e.g.
"scp host:* .") through the remote shell. This has the side effect of
requiring double quoting of shell meta-characters in file names
included on scp(1) command-lines, otherwise they could be interpreted
as shell commands on the remote side.

MFC after: 1 month
Relnotes: Yes
Sponsored by: The FreeBSD Foundation

show more ...

sshd: update the libwrap patch to drop connections early

OpenSSH has dropped libwrap support in OpenSSH 6.7p in 2014
(f2719b7c in github.com/openssh/openssh-portable) and we
maintain the patch ourse

sshd: update the libwrap patch to drop connections early

OpenSSH has dropped libwrap support in OpenSSH 6.7p in 2014
(f2719b7c in github.com/openssh/openssh-portable) and we
maintain the patch ourselves since 2016 (a0ee8cc636cd).

Over the years, the libwrap support has deteriotated and probably
that was reason for removal upstream. Original idea of libwrap was
to drop illegitimate connection as soon as possible, but over the
years the code was pushed further down and down and ended in the
forked client connection handler.

The negative effects of late dropping is increasing attack surface
for hosts that are to be dropped anyway. Apart from hypothetical
future vulnerabilities in connection handling, today a malicious
host listed in /etc/hosts.allow still can trigger sshd to enter
connection throttling mode, which is enabled by default (see
MaxStartups in sshd_config(5)), effectively casting DoS attack.
Note that on OpenBSD this attack isn't possible, since they enable
MaxStartups together with UseBlacklist.

A only negative effect from early drop, that I can imagine, is that
now main listener parses file in /etc, and if our root filesystems
goes bad, it would get stuck. But unlikely you'd be able to login
in that case anyway.

Implementation details:

- For brevity we reuse the same struct request_info. This isn't
a documented feature of libwrap, but code review, viewing data
in a debugger and real life testing shows that if we clear
RQ_CLIENT_NAME and RQ_CLIENT_ADDR every time, it works as intended.
- We set SO_LINGER on the socket to force immediate connection reset.
- We log message exactly as libwrap's refuse() would do.

Differential revision: https://reviews.freebsd.org/D33044

show more ...

openssh: use global state for blacklist in grace_alarm_handler

Obtained from: security/openssh-portable
Fixes: 19261079b743 ("openssh: update to OpenSSH v8.7p1")
Sponsored by: The FreeBSD Foundation

openssh: pass ssh context to BLACKLIST_NOTIFY

Fixes: 19261079b743 ("openssh: update to OpenSSH v8.7p1")
Sponsored by: The FreeBSD Foundation

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

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ssh: remove ssh-hpn leftovers

This was introduced in 8998619212f3a, and left behind when the hpn-ssh
patches were removed in 60c59fad8806. Although Being able to log
SO_RCVBUF in debug mode might h

ssh: remove ssh-hpn leftovers

This was introduced in 8998619212f3a, and left behind when the hpn-ssh
patches were removed in 60c59fad8806. Although Being able to log
SO_RCVBUF in debug mode might have some small value on its own, it's
not worth carrying an extra diff against upstream.

Reviewed by: kevans
MFC after: 3 days
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D28610

show more ...

MFH

Sponsored by: Rubicon Communications, LLC (netgate.com)

openssh: refer to OpenSSL not SSLeay, part 2

This change was made upstream between 7.9p1 and 8.0p1. We've made local
changes in the same places for handling the version_addendum; apply the
SSLeay_v

openssh: refer to OpenSSL not SSLeay, part 2

This change was made upstream between 7.9p1 and 8.0p1. We've made local
changes in the same places for handling the version_addendum; apply the
SSLeay_version to OpenSSL_version change in advance of importing 8.0p1.
This should have been part of r363225.

Obtained from: OpenSSH-portable a65784c9f9c5
MFC with: r363225
Sponsored by: The FreeBSD Foundation

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