openssh 1:9.2p1-2ubuntu1 source package in Ubuntu

Changelog

openssh (1:9.2p1-2ubuntu1) mantic; urgency=medium

  * Merge with Debian unstable (LP: #2018094). Remaining changes:
    - debian/rules: modify dh_installsystemd invocations for
      socket-activated sshd
    - debian/openssh-server.postinst: handle migration of sshd_config options
      to systemd socket options on upgrade.
    - debian/README.Debian: document systemd socket activation.
    - debian/patches/socket-activation-documentation.patch: Document in
      sshd_config(5) that ListenAddress and Port no longer work.
    - debian/openssh-server.templates: include debconf prompt explaining
      when migration cannot happen due to multiple ListenAddress values
    - debian/.gitignore: drop file
    - debian/openssh-server.postrm: remove systemd drop-ins for
      socket-activated sshd on purge
    - debian/openssh-server.ucf-md5sum: Update list of stock sshd_config
      checksums to include those from jammy and kinetic.
    - debian/openssh-server.tmpfile,debian/systemd/ssh.service: Move
      /run/sshd creation out of the systemd unit to a tmpfile config so
      that sshd can be run manually if necessary without having to create
      this directory by hand.
    - debian/patches/systemd-socket-activation.patch: Fix sshd
      re-execution behavior when socket activation is used
    - debian/tests/systemd-socket-activation: Add autopkgtest for systemd socket
      activation functionality.
  * Dropped changes, included in Debian:
    - debian/patches/systemd-socket-activation.patch: Initial implementation
  * New changes:
    - debian/README.Debian: mention drop-in configurations in instructions
      for disabling sshd socket activation (LP: #2017434).
    - debian/openssh-server.ucf-md5sum: update for Ubuntu delta

openssh (1:9.2p1-2) unstable; urgency=medium

  * Fix mistakenly-unreleased entry for 1:9.2p1-1 in debian/NEWS.

openssh (1:9.2p1-1) unstable; urgency=medium

  * Set "UsePAM yes" when running regression tests, to match our default
    sshd configuration.
  * Ignore Lintian error about depending on lsb-base for now, to avoid
    problems with partial upgrades on non-default init systems.
  * New upstream release (https://www.openssh.com/releasenotes.html#9.2p1):
    - [SECURITY] sshd(8): fix a pre-authentication double-free memory fault
      introduced in OpenSSH 9.1. This is not believed to be exploitable, and
      it occurs in the unprivileged pre-auth process that is subject to
      chroot(2) and is further sandboxed on most major platforms.
    - [SECURITY] ssh(8): in OpenSSH releases after 8.7, the PermitRemoteOpen
      option would ignore its first argument unless it was one of the
      special keywords "any" or "none", causing the permission list to fail
      open if only one permission was specified.
    - [SECURITY] ssh(1): if the CanonicalizeHostname and
      CanonicalizePermittedCNAMEs options were enabled, and the system/libc
      resolver did not check that names in DNS responses were valid, then
      use of these options could allow an attacker with control of DNS to
      include invalid characters (possibly including wildcards) in names
      added to known_hosts files when they were updated. These names would
      still have to match the CanonicalizePermittedCNAMEs allow-list, so
      practical exploitation appears unlikely.
    - 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. This option
      defaults to "no", disabling the ~C command-line that was previously
      enabled by default.
    - 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.
    - ssh(1): add a "Host" line to the output of ssh -G showing the original
      hostname argument. bz3343
    - 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.
    - ssh(1): support dynamic remote port forwarding in escape
      command-line's -R processing.
    - ssh(1): when restoring non-blocking mode to stdio fds, restore exactly
      the flags that ssh started with and don't just clobber them with zero,
      as this could also remove the append flag from the set.
    - ssh(1): avoid printf("%s", NULL) if using UserKnownHostsFile=none and
      a hostkey in one of the system known hosts file changes.
    - scp(1): switch scp from using pipes to a socket-pair for communication
      with its ssh sub-processes, matching how sftp(1) operates.
    - sshd(8): clear signal mask early in main(); sshd may have been started
      with one or more signals masked (sigprocmask(2) is not cleared on
      fork/exec) and this could interfere with various things, e.g. the
      login grace timer. Execution environments that fail to clear the
      signal mask before running sshd are clearly broken, but apparently
      they do exist.
    - ssh(1): warn if no host keys for hostbased auth can be loaded.
    - sshd(8): Add server debugging for hostbased auth that is queued and
      sent to the client after successful authentication, but also logged to
      assist in diagnosis of HostbasedAuthentication problems.
    - ssh(1): document use of the IdentityFile option as being usable to
      list public keys as well as private keys.
    - sshd(8): check for and disallow MaxStartups values less than or equal
      to zero during config parsing, rather than failing later at runtime.
    - ssh-keygen(1): fix parsing of hex cert expiry times specified on the
      command-line when acting as a CA.
    - scp(1): when scp(1) is using the SFTP protocol for transport (the
      default), better match scp/rcp's handling of globs that don't match
      the globbed characters but do match literally (e.g. trying to transfer
      a file named "foo.[1]"). Previously scp(1) in SFTP mode would not
      match these pathnames but legacy scp/rcp mode would.
    - ssh-agent(1): document the "-O no-restrict-websafe" command-line
      option.
    - ssh(1): honour user's umask(2) if it is more restrictive then the ssh
      default (022).
    - sshd(8): allow writev(2) in the Linux seccomp sandbox. This seems to
      be used by recent glibcs at least in some configurations during error
      conditions.
    - sshd(8): simplify handling of SSH_CONNECTION PAM env var, removing
      global variable and checking the return value from pam_putenv.
    - sshd(8): disable SANDBOX_SECCOMP_FILTER_DEBUG that was mistakenly
      enabled during the OpenSSH 9.1 release cycle.
    - sshd(8): defer PRNG seeding until after the initial closefrom(2) call.
      PRNG seeding will initialize OpenSSL, and some engine providers (e.g.
      Intel's QAT) will open descriptors for their own use that closefrom(2)
      could clobber.
  * debian/run-tests: Add a little more flexibility for debugging.

openssh (1:9.1p1-2) unstable; urgency=medium

  [ Christian Göttsche ]
  * Do not copy SELinux security context in postinst.

  [ Colin Watson ]
  * Add missing ${misc:Depends} to Depends for openssh-client-udeb,
    openssh-server-udeb.
  * Use secure URI in Homepage field.
  * Remove 2 obsolete maintscript entries in 2 files.
  * Fix day-of-week for changelog entries 1:3.0.2p1-9, 1:3.0.2p1-2,
    1:3.0.1p1-1.
  * Remove deprecated Encoding key from desktop file
    debian/ssh-askpass-gnome.desktop.
  * Update standards version to 4.6.2, no changes needed.
  * debian/tests/regress: Adjust to cope with changes in adduser 3.130 (see
    #625758).

openssh (1:9.1p1-1) unstable; urgency=medium

  [ Markus Teich ]
  * Delete obsolete upstart configuration override.

  [ Colin Watson ]
  * Work around apparent dh-exec regressions (closes: #1016340).
  * Don't install unnecessary *.lo files in openssh-tests.
  * Update Lintian overrides to current syntax.
  * Pass on compiler/linker flags when building debian/keygen-test.
  * Remove obsolete and misleading rcp/rlogin/rsh alternatives, and stop
    providing rsh-client (closes: #197037).
  * Add sshd_config checksums for 1:8.2p1-1 and 1:8.7p1-1 to ucf reference
    file.
  * New upstream release (https://www.openssh.com/releasenotes.html#9.1p1,
    closes: #1021585):
    - ssh-keyscan(1): fix a one-byte overflow in SSH- banner processing.
    - ssh-keygen(1): double free() in error path of file hashing step in
      signing/verify code.
    - ssh-keysign(8): double-free in error path introduced in openssh-8.9.
    - 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.
    - 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.
    - 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). ssh(1) will
      terminate a connection if the server offers an RSA key that falls
      below this limit, as the SSH protocol does not include the ability to
      retry a failed key exchange.
    - sftp-server(8): add a "<email address hidden>" extension
      request that allows the client to obtain user/group names that
      correspond to a set of uids/gids.
    - sftp(1): use "<email address hidden>" 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 "<email address hidden>", 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.
    - 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.
    - ssh-keygen(1): implement the "verify-required" certificate option.
      This was already documented when support for user-verified FIDO keys
      was added, but the ssh-keygen(1) code was missing.
    - ssh-agent(1): hook up the restrict_websafe command-line flag;
      previously the flag was accepted but never actually used.
    - sftp(1): improve filename tab completions: never try to complete names
      to non-existent commands, and better match the completion type (local
      or remote filename) against the argument position being completed.
    - ssh-keygen(1), ssh(1), ssh-agent(1): several fixes to FIDO key
      handling, especially relating to keys that request user-verification.
      These should reduce the number of unnecessary PIN prompts for keys
      that support intrinsic user verification.
    - ssh-keygen(1): when enrolling a FIDO resident key, check if a
      credential with matching application and user ID strings already
      exists and, if so, prompt the user for confirmation before overwriting
      the credential.
    - sshd(8): improve logging of errors when opening authorized_keys files.
    - ssh(1): avoid multiplexing operations that could cause SIGPIPE from
      causing the client to exit early.
    - ssh_config(5), sshd_config(5): clarify that the RekeyLimit directive
      applies to both transmitted and received data.
    - ssh-keygen(1): avoid double fclose() in error path.
    - sshd(8): log an error if pipe() fails while accepting a connection.
    - ssh-keyscan(1): add missing *-sk types to ssh-keyscan manpage.
    - sshd(8): ensure that authentication passwords are cleared from memory
      in error paths.
    - ssh(1), ssh-agent(1): avoid possibility of notifier code executing
      kill(-1).
    - ssh_config(5): note that the ProxyJump directive also accepts the same
      tokens as ProxyCommand.
    - scp(1): do not ftruncate(3) files early when in sftp mode. The
      previous behaviour of unconditionally truncating the destination file
      would cause "scp ~/foo localhost:foo" and the reverse "scp
      localhost:foo ~/foo" to delete all the contents of their destination.
    - ssh-keygen(1): improve error message when 'ssh-keygen -Y sign' is
      unable to load a private key.
    - sftp(1), scp(1): when performing operations that glob(3) a remote
      path, ensure that the implicit working directory used to construct
      that path escapes glob(3) characters. This prevents glob characters
      from being processed in places they shouldn't, e.g. "cd /tmp/a*/",
      "get *.txt" should have the get operation treat the path "/tmp/a*"
      literally and not attempt to expand it (LP: #1483751).
    - ssh(1), sshd(8): be stricter in which characters will be accepted in
      specifying a mask length; allow only 0-9.
    - ssh-keygen(1): avoid printing hash algorithm twice when dumping a KRL.
    - ssh(1), sshd(8): continue running local I/O for open channels during
      SSH transport rekeying. This should make ~-escapes work in the client
      (e.g. to exit) if the connection happened to have stalled during a
      rekey event.
    - ssh(1), sshd(8): avoid potential poll() spin during rekeying.
    - Further hardening for sshbuf internals: disallow "reparenting" a
      hierarchical sshbuf and zero the entire buffer if reallocation fails.
    - sshd(8): add AUDIT_ARCH_PPC to supported seccomp sandbox
      architectures.
  * Drop patch to work around https://twistedmatrix.com/trac/ticket/9765,
    since the fix for that is in Debian testing.
  * Rewrite gnome-ssh-askpass(1) manual page using mdoc macros, and flesh it
    out a bit more.

  [ Steve Langasek ]
  * Support systemd socket activation.  Migrate any existing inetd-style
    socket activation to systemd socket activation.

  [ Gioele Barabucci ]
  * Remove ancient version constraints.
  * d/openssh-server.{postinst,config}: get_config_option: Replace perl with
    sed.

 -- Nick Rosbrook <email address hidden>  Fri, 19 May 2023 15:18:17 -0400