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Hash: SHA256
Format: 1.8
Date: Mon, 23 Sep 2024 21:09:59 -0700
Source: openssh
Architecture: source
Version: 1:9.9p1-1
Distribution: unstable
Urgency: medium
Maintainer: Debian OpenSSH Maintainers <debian-ssh@lists.debian.org>
Changed-By: Colin Watson <cjwatson@debian.org>
Changes:
openssh (1:9.9p1-1) unstable; urgency=medium
.
* Alias the old Debian-specific SetupTimeOut client option to
ConnectTimeout rather than to ServerAliveInterval.
* New upstream release (https://www.openssh.com/releasenotes.html#9.9p1):
- 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.
- 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): the ssh_config "Include" directive can now expand environment
as well as the same set of %-tokens "Match Exec" supports.
- sshd(8): add a sshd_config "RefuseConnection" option that, if set will
terminate the connection at the first authentication request.
- sshd(8): add a "refuseconnection" penalty class to sshd_config
PerSourcePenalties that is applied when a connection is dropped by the
new RefuseConnection keyword.
- sshd(8): add a "Match invalid-user" predicate to sshd_config Match
options that matches when the target username is not valid on the
server.
- ssh(1), sshd(8): update the Streamlined NTRUPrime code to a
substantially faster implementation.
- ssh(1), sshd(8): the hybrid Streamlined NTRUPrime/X25519 key exchange
algorithm now has an IANA-assigned name in addition to the
"@openssh.com" vendor extension name. This algorithm is now also
available under this name "sntrup761x25519-sha512"
- 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.
- All: convert key handling to use the libcrypto EVP_PKEY API, with the
exception of DSA.
- sshd(8): add a random amount of jitter (up to 4 seconds) to the grace
login time to make its expiry unpredictable.
- sshd(8): fix regression introduced in openssh-9.8 that swapped the
order of source and destination addresses in some sshd log messages.
- 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.
- 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.
- 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.
- regress: many performance and correctness improvements to the
re-keying regression test.
- 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.
- sshd(8): fix minor memory leak in Subsystem option parsing.
- All: additional hardening and consistency checks for the sshbuf code.
- sshd(8): reduce default logingrace penalty to ensure that a single
forgotten login that times out will be below the penalty threshold.
- ssh(1): fix proxy multiplexing (-O proxy) bug. If a mux started with
ControlPersist then later has a forwarding added using mux proxy
connection and the forwarding was used, then when the mux proxy
session terminated, the mux master process would issue a bad message
that terminated the connection.
- Sync contrib/ssh-copy-id to the latest upstream version.
- sshd(8): restore audit call before exit that regressed in openssh-9.8.
Fixes an issue where the SSH_CONNECTION_ABANDON event was not
recorded.
- Fix detection of setres*id on GNU/Hurd.
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