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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 (cherry picked from commit 0fdf8fae8b569bf9fff3b5171e669dcd7cf9c79e) (cherry picked from commit b4bb480ae9294d7e4b375f0ead9ae57517c79ef3) (cherry picked from commit e95979047aec384852102cf8bb1d55278ea77eeb) (cherry picked from commit dcb4ae528d357f34e4a4b4882c2757c67c98e395) Approved by: re (accelerated MFC)
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53 lines
2.1 KiB
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See https://www.openssh.com/releasenotes.html#9.8p1 for the release
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notes.
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Please read https://www.openssh.com/report.html for bug reporting
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instructions and note that we do not use Github for bug reporting or
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patch/pull-request management.
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This is the port of OpenBSD's excellent OpenSSH[0] to Linux and other
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Unices.
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OpenSSH is based on the last free version of Tatu Ylonen's sample
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implementation with all patent-encumbered algorithms removed (to
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external libraries), all known security bugs fixed, new features
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reintroduced and many other clean-ups. OpenSSH has been created by
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Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo de Raadt,
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and Dug Song. It has a homepage at https://www.openssh.com/
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This port consists of the re-introduction of autoconf support, PAM
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support, EGD/PRNGD support and replacements for OpenBSD library
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functions that are (regrettably) absent from other unices. This port
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has been best tested on AIX, Cygwin, HP-UX, Linux, MacOS/X,
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FreeBSD, NetBSD, OpenBSD, OpenServer, Solaris and UnixWare.
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This version actively tracks changes in the OpenBSD CVS repository.
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The PAM support is now more functional than the popular packages of
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commercial ssh-1.2.x. It checks "account" and "session" modules for
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all logins, not just when using password authentication.
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There is now several mailing lists for this port of OpenSSH. Please
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refer to https://www.openssh.com/list.html for details on how to join.
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Please send bug reports and patches to https://bugzilla.mindrot.org or
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the mailing list openssh-unix-dev@mindrot.org. To mitigate spam, the
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list only allows posting from subscribed addresses. Code contribution
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are welcomed, but please follow the OpenBSD style guidelines[1].
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Please refer to the INSTALL document for information on dependencies and
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how to install OpenSSH on your system.
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Damien Miller <djm@mindrot.org>
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Miscellania -
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This version of OpenSSH is based upon code retrieved from the OpenBSD CVS
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repository which in turn was based on the last free sample implementation
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released by Tatu Ylonen.
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References -
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[0] https://www.openssh.com/
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[1] https://man.openbsd.org/style.9
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