diff options
author | Colin Watson <cjwatson@debian.org> | 2014-10-07 13:33:15 +0100 |
---|---|---|
committer | Colin Watson <cjwatson@debian.org> | 2014-10-07 14:27:30 +0100 |
commit | f0b009aea83e9ff3a50be30f51012099a5143c16 (patch) | |
tree | 3825e6f7e3b7ea4481d06ed89aba9a7a95150df5 /sshd.0 | |
parent | 47f0bad4330b16ec3bad870fcf9839c196e42c12 (diff) | |
parent | 762c062828f5a8f6ed189ed6e44ad38fd92f8b36 (diff) |
Merge 6.7p1.
* New upstream release (http://www.openssh.com/txt/release-6.7):
- sshd(8): The default set of ciphers and MACs has been altered to
remove unsafe algorithms. In particular, CBC ciphers and arcfour* are
disabled by default. The full set of algorithms remains available if
configured explicitly via the Ciphers and MACs sshd_config options.
- ssh(1), sshd(8): Add support for Unix domain socket forwarding. A
remote TCP port may be forwarded to a local Unix domain socket and
vice versa or both ends may be a Unix domain socket (closes: #236718).
- ssh(1), ssh-keygen(1): Add support for SSHFP DNS records for ED25519
key types.
- sftp(1): Allow resumption of interrupted uploads.
- ssh(1): When rekeying, skip file/DNS lookups of the hostkey if it is
the same as the one sent during initial key exchange.
- sshd(8): Allow explicit ::1 and 127.0.0.1 forwarding bind addresses
when GatewayPorts=no; allows client to choose address family.
- sshd(8): Add a sshd_config PermitUserRC option to control whether
~/.ssh/rc is executed, mirroring the no-user-rc authorized_keys
option.
- ssh(1): Add a %C escape sequence for LocalCommand and ControlPath that
expands to a unique identifer based on a hash of the tuple of (local
host, remote user, hostname, port). Helps avoid exceeding miserly
pathname limits for Unix domain sockets in multiplexing control paths.
- sshd(8): Make the "Too many authentication failures" message include
the user, source address, port and protocol in a format similar to the
authentication success / failure messages.
- Use CLOCK_BOOTTIME in preference to CLOCK_MONOTONIC when it is
available. It considers time spent suspended, thereby ensuring
timeouts (e.g. for expiring agent keys) fire correctly (closes:
#734553).
- Use prctl() to prevent sftp-server from accessing
/proc/self/{mem,maps}.
* Restore TCP wrappers support, removed upstream in 6.7. It is true that
dropping this reduces preauth attack surface in sshd. On the other
hand, this support seems to be quite widely used, and abruptly dropping
it (from the perspective of users who don't read openssh-unix-dev) could
easily cause more serious problems in practice. It's not entirely clear
what the right long-term answer for Debian is, but it at least probably
doesn't involve dropping this feature shortly before a freeze.
* Replace patch to disable OpenSSL version check with an updated version
of Kurt Roeckx's patch from #732940 to just avoid checking the status
field.
Diffstat (limited to 'sshd.0')
-rw-r--r-- | sshd.0 | 26 |
1 files changed, 9 insertions, 17 deletions
@@ -1,4 +1,4 @@ | |||
1 | SSHD(8) OpenBSD System Manager's Manual SSHD(8) | 1 | SSHD(8) System Manager's Manual SSHD(8) |
2 | 2 | ||
3 | NAME | 3 | NAME |
4 | sshd - OpenSSH SSH daemon | 4 | sshd - OpenSSH SSH daemon |
@@ -11,7 +11,7 @@ SYNOPSIS | |||
11 | 11 | ||
12 | DESCRIPTION | 12 | DESCRIPTION |
13 | sshd (OpenSSH Daemon) is the daemon program for ssh(1). Together these | 13 | sshd (OpenSSH Daemon) is the daemon program for ssh(1). Together these |
14 | programs replace rlogin(1) and rsh(1), and provide secure encrypted | 14 | programs replace rlogin and rsh, and provide secure encrypted |
15 | communications between two untrusted hosts over an insecure network. | 15 | communications between two untrusted hosts over an insecure network. |
16 | 16 | ||
17 | sshd listens for connections from clients. It is normally started at | 17 | sshd listens for connections from clients. It is normally started at |
@@ -228,9 +228,10 @@ LOGIN PROCESS | |||
228 | 228 | ||
229 | 7. Changes to user's home directory. | 229 | 7. Changes to user's home directory. |
230 | 230 | ||
231 | 8. If ~/.ssh/rc exists, runs it; else if /etc/ssh/sshrc exists, | 231 | 8. If ~/.ssh/rc exists and the sshd_config(5) PermitUserRC option |
232 | runs it; otherwise runs xauth. The ``rc'' files are given the | 232 | is set, runs it; else if /etc/ssh/sshrc exists, runs it; |
233 | X11 authentication protocol and cookie in standard input. See | 233 | otherwise runs xauth. The ``rc'' files are given the X11 |
234 | authentication protocol and cookie in standard input. See | ||
234 | SSHRC, below. | 235 | SSHRC, below. |
235 | 236 | ||
236 | 9. Runs user's shell or command. | 237 | 9. Runs user's shell or command. |
@@ -545,11 +546,6 @@ FILES | |||
545 | directory becomes accessible. This file should be writable only | 546 | directory becomes accessible. This file should be writable only |
546 | by the user, and need not be readable by anyone else. | 547 | by the user, and need not be readable by anyone else. |
547 | 548 | ||
548 | /etc/hosts.allow | ||
549 | /etc/hosts.deny | ||
550 | Access controls that should be enforced by tcp-wrappers are | ||
551 | defined here. Further details are described in hosts_access(5). | ||
552 | |||
553 | /etc/hosts.equiv | 549 | /etc/hosts.equiv |
554 | This file is for host-based authentication (see ssh(1)). It | 550 | This file is for host-based authentication (see ssh(1)). It |
555 | should only be writable by root. | 551 | should only be writable by root. |
@@ -625,8 +621,8 @@ FILES | |||
625 | 621 | ||
626 | SEE ALSO | 622 | SEE ALSO |
627 | scp(1), sftp(1), ssh(1), ssh-add(1), ssh-agent(1), ssh-keygen(1), | 623 | scp(1), sftp(1), ssh(1), ssh-add(1), ssh-agent(1), ssh-keygen(1), |
628 | ssh-keyscan(1), chroot(2), hosts_access(5), login.conf(5), moduli(5), | 624 | ssh-keyscan(1), chroot(2), login.conf(5), moduli(5), sshd_config(5), |
629 | sshd_config(5), inetd(8), sftp-server(8) | 625 | inetd(8), sftp-server(8) |
630 | 626 | ||
631 | AUTHORS | 627 | AUTHORS |
632 | OpenSSH is a derivative of the original and free ssh 1.2.12 release by | 628 | OpenSSH is a derivative of the original and free ssh 1.2.12 release by |
@@ -636,8 +632,4 @@ AUTHORS | |||
636 | versions 1.5 and 2.0. Niels Provos and Markus Friedl contributed support | 632 | versions 1.5 and 2.0. Niels Provos and Markus Friedl contributed support |
637 | for privilege separation. | 633 | for privilege separation. |
638 | 634 | ||
639 | CAVEATS | 635 | OpenBSD 5.6 July 3, 2014 OpenBSD 5.6 |
640 | System security is not improved unless rshd, rlogind, and rexecd are | ||
641 | disabled (thus completely disabling rlogin and rsh into the machine). | ||
642 | |||
643 | OpenBSD 5.5 December 7, 2013 OpenBSD 5.5 | ||